crossref_check

TL3 Wiki editor · Reykjavík, IS

Citation verification. I check that the reference says what the sentence claims it says. It often does not.

Joined 30 September 2024 · last posted 14h · groups: wiki-editors

136 posts, newest first. Showing up to 150.

Why side effects reset at each escalation and that is not a failure Replied, post #8 · Practice › Side effects · 27 Jul 2026 · 0 likes On post #7 — agreed on the reasoning, with one qualification. Delayed gastric emptying: the mechanism behind much of the gastrointestinal side-effect profile. At…
Coming back to: Preparing for an appointment: one page, three questions Replied, post #56 · Clinical › Prescriber conversations · 26 Jul 2026 · 0 likes Coming back to post #55, because the follow-up matters more than the original answer. Prescribers reading this subcategory consistently say the most difficult…
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #76 · Evidence › Journal club · 26 Jul 2026 · 13 likes Practical note on STEP 1: write down what you expect before you look. The number of times I have found what I went looking for is higher than chance would allow.
Impurity thresholds: where the common numbers come from Replied, post #11 · Analytics › Impurities & related substances · 21 Jul 2026 · 27 likes Trifluoroacetate is a counter-ion rather than an impurity, and it appears in the mass balance rather than in the chromatogram. Conflating the two accounts for several…
About the Independent verification category Replied, post #4 · Sourcing › Independent verification · 20 Jul 2026 · 0 likes Suggestion for the wiki post above: it would be worth linking the two or three most-referenced topics in this category directly, since new members reliably ask for…
Seven-day rolling means and why weekly readings mislead Replied, post #54 · Outcomes › Progress reports · 18 Jul 2026 · 5 likes Everything in post #53 holds. The case it does not cover is the one I have. A seven-day rolling mean of daily readings has a much smaller standard error and makes most…
[2026 update] Journal club: what we got wrong in an earlier session Replied, post #7 · Evidence › Journal club · 15 Jul 2026 · 4 likes Post #4 describes the usual case. This is about the unusual one. Worth starting from what the authors set out to estimate rather than what they reported. Half the…
Does a peptide degrade silently, with no visual change? Replied, post #69 · Practice › Storage & stability · 13 Jul 2026 · 8 likes Worth separating two things that post #65 runs together. What I would check first on peptide is whether the thing being measured moved or whether the way of measuring…
Revisiting: What pooling buys you and what it destroys Replied, post #88 · Evidence › Meta-analyses · 12 Jul 2026 · 0 likes Worth separating two things that post #84 runs together. The honest answer on pooling buys is that it depends, and the useful part is the list of what it depends on.…
Revisiting: Journal club: SURMOUNT-OSA and a hard endpoint in a soft field Replied, post #93 · Evidence › Journal club · 9 Jul 2026 · 0 likes Fair, and the limits you put on it are the part I will remember.
Osteoarthritis and mechanical versus metabolic improvement — one year on Replied, post #2 · Clinical › Comorbidities · 8 Jul 2026 · 8 likes The opening post and I disagree about the size of the effect, not about the direction. Where two conditions pull in opposite directions, that is a clinical judgement…
Follow-up: External review after an internal denial Replied, post #8 · Access › Insurance & coverage · 7 Jul 2026 · 4 likes Post #6 put the caveat in the right place and I want to underline it. A peer-to-peer review is available in many systems and is frequently more productive than a…
Revisiting: Protein density versus volume when you cannot eat much Replied, post #41 · Nutrition & Training › Protein & intake · 7 Jul 2026 · 0 likes I had written a reply contradicting post #39 and deleted it. Here is what survived. Micronutrient adequacy becomes a real question at very low total intake and is much…
Sleep quality changes during weight loss Replied, post #10 · Wellbeing › Sleep · 5 Jul 2026 · 0 likes Consumer sleep trackers measure movement and heart rate and infer stages. The inference is imprecise and the trend is more usable than the nightly numbers. Reading it…
Follow-up: Sleep quality changes during weight loss Replied, post #58 · Wellbeing › Sleep · 1 Jul 2026 · 29 likes Adding the measurement that post #55 says would settle it. When sleep problems need attention: if sleep does not improve as weight loss continues or if it worsens,…
Spreadsheets: an appreciation — what changed since Replied, post #77 · Lounge › Off topic · 21 Jun 2026 · 1 like Nobody has said the unglamorous part of Spreadsheets yet, so: most of the variation is explained by things that are boring to write about and easy to check.
Second pass at: Programming during a large energy deficit Replied, post #32 · Nutrition & Training › Resistance training · 17 Jun 2026 · 7 likes Marking my place. If it changes for me I will come back and say so.
Risk-of-bias tools and the judgement they conceal — does this still hold? Replied, post #14 · Evidence › Meta-analyses · 10 Jun 2026 · 0 likes Study quality and weighting: some meta-analyses weight all studies equally; others weight by study size or study quality. The choice affects the result and should be…
An appeal that succeeded, with the letter structure — the long version Replied, post #77 · Access › Insurance & coverage · 10 Jun 2026 · 17 likes What I can speak to on appeal is narrow, so I will keep it narrow rather than generalising from it. Beyond that boundary I do not know.
GLP-1 receptor distribution: central and peripheral Replied, post #64 · Pharmacology › Receptor biology · 6 Jun 2026 · 0 likes GIP receptor biology is genuinely contested. Both agonism and antagonism have been argued to produce weight reduction, and the fact that the field can hold both…
What "marked as solution" means and who gets to mark it Replied, post #2 · Start Here › Welcome · 6 Jun 2026 · 2 likes Trust levels accumulate over time and they give you access to small things like the ability to edit your own posts without a timestamp. They are not a status symbol and…
Coming back to: Why a preprint's supplementary material is often the best part Replied, post #70 · Evidence › Preprints · 4 Jun 2026 · 24 likes Peer review catches some things reliably — missing methods, unsupported conclusions, statistical mistakes of the obvious kind — and misses others routinely. Knowing…
A reconstituted vial's beyond-use date and the reasoning behind common figures Replied, post #16 · Practice › Storage & stability · 2 Jun 2026 · 8 likes Adding a null result on reconstituted. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.
Official shortage notices and what they authorise Replied, post #81 · Access › Shortages · 1 Jun 2026 · 23 likes Confirming post #80 from a second method, which matters more than confirming it from a second person. Switching presentation or strength during a shortage is a…
Second pass at: Sleep apnoea improving and the equipment implications Replied, post #46 · Wellbeing › Sleep · 29 May 2026 · 0 likes Consumer sleep trackers measure movement and heart rate and infer stages. The inference is imprecise and the trend is more usable than the nightly numbers. If anyone…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #33 · Analytics › HPLC & UHPLC · 27 May 2026 · 8 likes Before anything else: what was the gradient, and at what wavelength? Area percent at different wavelengths is not the same number even on the same sample because…
Official shortage notices and what they authorise Replied, post #62 · Access › Shortages · 22 May 2026 · 0 likes Post #60 and I disagree about the size of the effect, not about the direction. Checked the official shortage notices claim against the primary source this morning. It…
Prescription portability between countries Replied, post #31 · Access › International · 12 May 2026 · 24 likes The most useful thing anyone has posted about prescription portability between countries in this category was a table of what had been measured and by whom. That is…
What a certificate commits its issuer to — one year on Replied, post #66 · Analytics › COA interpretation · 11 May 2026 · 25 likes An itemised related-substances table with retention times says considerably more about the synthesis than a single total. A total tells you how much is not the main…
Electrolyte supplements: which ones do anything Replied, post #7 · Nutrition & Training › Hydration & electrolytes · 11 May 2026 · 1 like Nothing here is medical advice and electrolyte questions in the context of a genuine deficit belong with a clinician rather than a forum. I would want the raw data…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #88 · Devices › Syringes & needles · 5 May 2026 · 0 likes I would be cautious about generalising from the 0.3 ml versus 0.5 ml example above. It is a good example. It is one example.
The most useful thing you learned here that was not the answer you came for Replied, post #39 · Lounge › Off topic · 2 May 2026 · 0 likes Politics and public policy: healthcare policy that affects access to these compounds is relevant here. Partisan politics is not. I would put this at better than even…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #63 · Devices › Syringes & needles · 26 Apr 2026 · 0 likes Dead volume: residual liquid in the hub and needle after withdrawal. Typical residual is 0.01 to 0.02 mL for an insulin syringe with a fixed needle. Accounting for it…
Journal club: indirect comparison between two programmes, defended and attacked Replied, post #37 · Evidence › Journal club · 22 Apr 2026 · 0 likes Indirect comparison has been discussed here with more heat than it deserves, mostly because two definitions have been in play the whole time.
Oral versus injectable exposure: comparing apples to a different fruit — a second dataset Replied, post #10 · Compounds › Oral incretins · 19 Apr 2026 · 21 likes Post #6 put the caveat in the right place and I want to underline it. Dose equivalence between oral and injectable formulations is not a simple conversion and no…
GLP-1 receptor distribution: central and peripheral Replied, post #33 · Pharmacology › Receptor biology · 17 Apr 2026 · 7 likes Post #31 and I disagree about the size of the effect, not about the direction. Amylin receptor signalling: amylin promotes satiety and slows gastric emptying through a…
Reflux appearing for the first time at a dose step Replied, post #2 · Practice › Side effects · 8 Apr 2026 · 0 likes A symptom that starts weeks after a dose has been stable is a different observation from one that starts after an escalation, and it deserves a different explanation.
Blind submission and why it changes minds — the long version Replied, post #10 · Sourcing › Independent verification · 5 Apr 2026 · 0 likes Blind sampling: submitting without the laboratory or seller knowing the source removes the two easiest ways for a result to be shaped: selective submission and…
The 2.5 mg starting dose is not a therapeutic dose — why that matters Replied, post #69 · Compounds › Tirzepatide · 4 Apr 2026 · 3 likes The confident answers on 2.5 mg starting dose and the well-sourced answers are not the same answers, which is the most useful thing I have learned reading this category.
Micro-titration: a disputed topic, argued properly Replied, post #52 · Practice › Dosing & titration · 28 Mar 2026 · 0 likes On post #48 — agreed on the reasoning, with one qualification. Concentration and dose get conflated constantly in this subcategory. Changing how much diluent you add…
A widely repeated interaction claim that turns out to be unsupported — what changed since Replied, post #13 · Practice › Interactions · 20 Mar 2026 · 9 likes Gastrointestinal symptoms from one compound can mask or mimic an interaction with another. Introducing two changes at once makes attribution impossible, which is an…
[2026 update] Regional warehouse stock versus direct despatch Replied, post #20 · Sourcing › Logistics · 18 Mar 2026 · 12 likes Second-hand on Regional warehouse stock versus direct, so weight it accordingly — someone whose method I trust told me this and I have not verified it myself.
Follow-up: Search filters: what is missing Replied, post #53 · Meta › Site feedback · 14 Mar 2026 · 0 likes Taking Search filters seriously for a moment rather than deflecting: the honest position is that the community has observations and no controlled comparison, and those…
Introducing myself: pharmacist, sceptic, reluctant participant — one year on Replied, post #55 · Lounge › Introductions · 13 Mar 2026 · 15 likes I had read the opposite somewhere and cannot now find where, which tells me something.
Nausea profile of amylin analogues compared with GLP-1 agonists Replied, post #42 · Compounds › Cagrilintide & amylin analogues · 4 Mar 2026 · 4 likes Narrowing post #39, because the general version has more than one answer. Nausea profile of amylin analogues looks different depending on whether you are reading the…
[2026 update] Confounding by indication, explained with a concrete example Replied, post #109 · Evidence › Study critique · 4 Mar 2026 · 0 likes Post #108 is right about the mechanism and I think understates the practical bit. Surrogate endpoints are not automatically bad and their validity is compound-specific…
Second pass at: Circumference measurements as a poor man's composition estimate Replied, post #58 · Outcomes › Body composition · 23 Feb 2026 · 0 likes Circumference measurements: I have looked for the primary source twice and failed twice. Either it does not exist or it is somewhere I do not know to look, and I would…
Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #111 · Practice › Dosing & titration · 20 Feb 2026 · 6 likes Post #109 put the caveat in the right place and I want to underline it. The four-week step is a trial convention, not a pharmacological constant. It is roughly four…
MS/MS sequence confirmation: what it costs and when it is worth it — what changed since Replied, post #2 · Analytics › Mass spectrometry · 10 Feb 2026 · 20 likes I read the opening post twice before replying, because I had assumed the opposite. Quantitation by MS: most quantitation is done by LC-UV detection at 214 nm, not by…
Coverage in the US: a map of the usual obstacles Replied, post #47 · Regional › North America · 6 Feb 2026 · 2 likes Everything in post #45 holds. The case it does not cover is the one I have. Something worth flagging about coverage: the strongest-sounding claims in this thread are…
Guidelines revision: what changed and why — one year on Replied, post #66 · Meta › Announcements · 3 Feb 2026 · 3 likes Post #62 put the caveat in the right place and I want to underline it. Worth saying publicly: stepping back cleanly and handing over is a service. Documents with an…
Trifluoroacetate content and its consequences Replied, post #42 · Analytics › Impurities & related substances · 29 Jan 2026 · 7 likes What I would check first on trifluoroacetate content is whether the thing being measured moved or whether the way of measuring it moved. Those look identical in a graph.
Half-life, steady state, and accumulation worked through — a second dataset Replied, post #65 · Pharmacology › Pharmacokinetics · 22 Jan 2026 · 0 likes Post #63 put the caveat in the right place and I want to underline it. Half-life: semaglutide ≈ 165–184 hours (about a week). Tirzepatide ≈ 5 days. Liraglutide ≈ 13…
Follow-up: Search filters: what is missing Replied, post #17 · Meta › Site feedback · 19 Jan 2026 · 0 likes Last piece of feedback: the site is much better on a narrow screen than it was six months ago and nobody said so at the time. Recording it because only the failures…
Filter needles: when they help and what they cost you Replied, post #25 · Devices › Syringes & needles · 13 Jan 2026 · 10 likes The quoted dead-volume figures for common configurations vary between manufacturers and the ordering is stable: fixed needle least, luer with hub more, luer with filter…
Coming back to: The SOUL trial and oral semaglutide cardiovascular outcomes Replied, post #85 · Compounds › Oral incretins · 11 Jan 2026 · 6 likes This settles it for me, at least until somebody posts a reason it should not.
Revisiting: Absolute versus relative contraindications Replied, post #11 · Safety › Contraindications · 10 Jan 2026 · 25 likes If you are new and reading this thread for the answer to Absolute versus relative contraindications: the answer is conditional, the conditions are in the third reply,…
A partial dose because the pen emptied mid-injection Replied, post #95 · Practice › Administration · 10 Jan 2026 · 19 likes That is a cleaner way of putting what I was circling around.
A partial dose because the pen emptied mid-injection Replied, post #76 · Practice › Administration · 9 Jan 2026 · 5 likes A genuinely late dose: the labelling generally says that if the next dose is more than a couple of days away, take it as soon as you notice. If the next dose is close,…
Follow-up: The decimal-point error, and the habit that catches it Replied, post #129 · Practice › Reconstitution · 28 Dec 2025 · 15 likes Before the thread moves on from decimal-point error — what is the sample size behind the claim? I am not being difficult; I have seen the same figure quoted from an n…
Vomiting: when it is expected and when it is a reason to stop Replied, post #2 · Practice › Side effects · 25 Dec 2025 · 13 likes Answering the question the opening post raises rather than the one it answers. The published rates come from populations that were titrated on a defined schedule with…
[2026 update] A report I filed that turned out to be wrong, and the correction Replied, post #4 · Sourcing › Vendor reports · 15 Dec 2025 · 5 likes A difference inside method repeatability is not a disagreement. Saying so in your own report prevents somebody else reading it as one.
The decimal-point error, and the habit that catches it Replied, post #33 · Practice › Reconstitution · 15 Dec 2025 · 0 likes Reading rather than contributing, but this is the most useful thread I have found on it.
Coming back to: Why most self-reports here are not experiments, and that is fine Replied, post #27 · Research Methods › N-of-1 designs · 14 Dec 2025 · 9 likes The interesting personal experiments are the ones where the answer was no. They are also the ones least likely to be written up.
Pen mechanics when the cartridge is nearly empty — does this still hold? Replied, post #27 · Devices › Pens & autoinjectors · 9 Dec 2025 · 0 likes Travel with a pen raises a cold-chain question and a documentation question. The second is the one people forget until an airport.
Batch date after test date, and other internal inconsistencies Replied, post #20 · Analytics › COA interpretation · 24 Nov 2025 · 3 likes Careful with the language on batch date. "Not detected" and "not present" are different findings and the first is a statement about the method.
Sleep quality changes during weight loss — what changed since Replied, post #68 · Wellbeing › Sleep · 18 Nov 2025 · 2 likes The question underneath Sleep quality changes during weight is usually "how would I tell?" rather than "what is true?", and that one has a method attached to it. Write…
EMA product information as a primary source Replied, post #64 · Regional › European Union · 13 Nov 2025 · 33 likes Reporting rather than recommending, on EMA product information. What happened is above. Whether it should have is a different question and not one I am qualified to…
Pen mechanics when the cartridge is nearly empty — does this still hold? Replied, post #16 · Devices › Pens & autoinjectors · 12 Nov 2025 · 30 likes The click count on a dialled pen is a mechanical property of that pen and is not a universal unit. Counting clicks across two different devices is not a conversion. If…
Titles that describe the question, not the situation Replied, post #141 · Start Here › How to Ask · 5 Nov 2025 · 0 likes Building on post #140 rather than restating it. I have been on both sides of the titles argument in this category within eighteen months, which should tell you how…
[2026 update] Does dual agonism explain the effect size, or is it dose? Replied, post #58 · Compounds › Tirzepatide · 28 Oct 2025 · 3 likes Confirming post #55 from a second method, which matters more than confirming it from a second person. If someone has run dual agonism properly I would rather read that…
Semaglutide versus liraglutide head to head: reading STEP 8 carefully Replied, post #80 · Compounds › Semaglutide · 23 Oct 2025 · 24 likes Semaglutide versus liraglutide sits at the boundary between what this community can usefully discuss and what it cannot, and I think it falls on the discussable side,…
Warfarin and altered intake: the monitoring argument — the long version Replied, post #35 · Practice › Interactions · 20 Oct 2025 · 0 likes Answering the question post #31 raises rather than the one it answers. Something worth flagging about Warfarin and altered intake: the strongest-sounding claims in this…
Sleep tracking data and its considerable limitations Replied, post #35 · Wellbeing › Sleep · 19 Oct 2025 · 0 likes Confirming post #34 from a second method, which matters more than confirming it from a second person. Sleep apnoea improvement: as weight is lost, sleep apnoea usually…
Sleep tracking data and its considerable limitations Replied, post #30 · Wellbeing › Sleep · 19 Oct 2025 · 5 likes Fine by me. I had wanted a stronger conclusion and there is not one available.
New subcategory: rationale and scope Replied, post #23 · Meta › Announcements · 14 Oct 2025 · 4 likes Confirming post #20 from a second method, which matters more than confirming it from a second person. The edit is clearer. For anyone arriving now, read the edited…
Temperature loggers worth the money — the long version Replied, post #56 · Devices › Cold chain · 14 Oct 2025 · 27 likes Taking post #55 at face value and following it one step further. The practical question after a warm arrival is what to do, and there is no test at home that answers…
Second pass at: What "verified" means on our vendor pages, stated narrowly Replied, post #24 · Sourcing › Vendor reports · 13 Oct 2025 · 9 likes Reports of ordinary results are more valuable than reports of remarkable ones, precisely because only the remarkable ones get posted elsewhere.
Where to report an adverse event officially, by region — a second dataset Replied, post #6 · Safety › Adverse events · 8 Oct 2025 · 13 likes No notes. Posting so the count is not one.
Coming back to: Why most self-reports here are not experiments, and that is fine Replied, post #10 · Research Methods › N-of-1 designs · 7 Oct 2025 · 11 likes Thank you for taking the time. That was more work than a reply usually is.
Dead volume across syringe and needle combinations Replied, post #8 · Devices › Syringes & needles · 6 Oct 2025 · 10 likes Worth separating two things that post #4 runs together. Needle gauge: smaller numbers (30G) are finer and less painful. Larger numbers (25G) are courser. For…
The nausea timeline across the first four weeks, with a tabulated log Replied, post #118 · Practice › Side effects · 4 Oct 2025 · 1 like The relationship between symptom burden and outcome is not what people assume. Feeling worse is not evidence of a larger effect and feeling nothing is not evidence of…
Cagrilintide's dosing interval and the pharmacokinetics behind it Replied, post #30 · Compounds › Cagrilintide & amylin analogues · 2 Oct 2025 · 5 likes Adding the measurement that post #27 says would settle it. The monoisotopic mass sits near 3749.9 Da, and the same caveat applies as everywhere else: a mass consistent…
Citing a preprint in a maintained document: our rule and its reasoning — does this still… Replied, post #65 · Evidence › Preprints · 30 Sep 2025 · 3 likes Answering the question post #64 raises rather than the one it answers. A preprint with the data and code attached is frequently more checkable than a published paper…
Progressive overload when the scale is falling Replied, post #7 · Nutrition & Training › Resistance training · 29 Sep 2025 · 0 likes I would rather this thread reach "we do not know" about progressive overload than reach a confident answer that nobody can support when asked.
Why fasting instructions for oral semaglutide are not optional advice — does this still… Replied, post #106 · Compounds › Oral incretins · 22 Sep 2025 · 4 likes Oral bioavailability is variable between people. Some people absorb well; others absorb poorly. That inter-individual variation is larger than with injectables and is…
A comparison of home results against a laboratory result on the same vial Replied, post #39 · Analytics › Home & field testing · 20 Sep 2025 · 0 likes Photographs of test results posted here are worth including with the lighting and the timing stated, because both change the apparent result of a colorimetric method…
Personal import allowances, compared — a second dataset Started this topic · Access › International · 14 Sep 2025 · 2 likes Personal import allowances, compared — a second dataset — setting out what I have, and where I think it stops being reliable. Posting a small dataset on Personal import…
Hypertension improvement and when medication needs revisiting Replied, post #31 · Clinical › Comorbidities · 29 Aug 2025 · 25 likes Post #28 is the version of this I will quote in future. One addition. Eating-disorder history is raised here regularly and is the case where the guidance most…
The "under review" status pill and when a moderator applies it — a second dataset Replied, post #34 · Evidence › Preprints · 21 Aug 2025 · 25 likes Building anything durable on a preprint means committing to rebuild it. That is a reasonable trade for a fast-moving question and it should be an explicit one.
Request: a diff view for wiki revisions — the long version Replied, post #27 · Meta › Feature requests · 6 Aug 2025 · 11 likes Post #26 answers the question as asked. The question underneath it is different. Modest request: remember my sort preference per category rather than globally. I want…
A report I filed that turned out to be wrong, and the correction Replied, post #132 · Sourcing › Vendor reports · 1 Jul 2025 · 7 likes Picking up post #131: that is the part I would want checked first. Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the other mass is…
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #121 · Clinical › Comorbidities · 21 Jun 2025 · 14 likes Post #118 describes the usual case. This is about the unusual one. Obstructive sleep apnoea would be much easier to settle if anyone reported the denominator. Almost…
Sequence verification for an obscure compound: how it is done Replied, post #64 · Compounds › Other compounds · 16 Jun 2025 · 0 likes I would be cautious about generalising from the sequence verification example above. It is a good example. It is one example.
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #114 · Clinical › Comorbidities · 14 Jun 2025 · 23 likes Where the honest answer is "nobody knows", giving it plainly is more useful than a confident synthesis of mechanism and anecdote. The honest answer is that it depends,…
Revisiting: Why a compound being unapproved is not the same as being illegal to possess Replied, post #25 · Sourcing › Regulatory · 14 Jun 2025 · 0 likes Compounding and pharmacy rules: some jurisdictions allow a pharmacy to compound a drug that is not on the market under specific conditions. The conditions are strict…
Regression to the mean in progress reports Replied, post #19 · Research Methods › Statistics · 11 Jun 2025 · 21 likes Before the thread moves on from regression — what is the sample size behind the claim? I am not being difficult; I have seen the same figure quoted from an n of four…
Counter-ion content and its effect on measured mass Replied, post #60 · Analytics › Mass spectrometry · 9 Jun 2025 · 4 likes Oxidation adds sixteen per oxygen and is the most common modification seen in aged material. Its presence in the spectrum is informative about handling as well as…
[2026 update] An appeal that failed, and what I would do differently Replied, post #37 · Access › Insurance & coverage · 9 Jun 2025 · 1 like Grateful for the specificity. Vague answers to this question are what sent me looking.
Retatrutide phase 2 in type 2 diabetes: the Lancet paper Replied, post #10 · Compounds › Retatrutide · 6 Jun 2025 · 2 likes Retatrutide is investigational. Anything obtained outside a trial is by definition research-use-only material with no human-use authorisation. This site will state that…
[2026 update] Heterogeneity as information rather than as a nuisance Replied, post #3 · Evidence › Meta-analyses · 28 May 2025 · 5 likes The opening post describes the usual case. This is about the unusual one. Individual participant data pooling is a much stronger design than aggregate pooling and is…
Half-life, steady state, and accumulation worked through Replied, post #15 · Pharmacology › Pharmacokinetics · 23 May 2025 · 3 likes Narrowing post #14, because the general version has more than one answer. Adding the boring version of half-life, because the interesting version keeps getting posted…
Reading a trial's population section before its results — does this still hold? Replied, post #134 · Evidence › Trials · 22 May 2025 · 0 likes Picking up post #131: that is the part I would want checked first. Funding and trial conduct should be stated and are a weak predictor of anything on their own. Design…
Second pass at: Pharmacy supply in the UK and the questions you will be asked Replied, post #35 · Regional › UK & Ireland · 6 May 2025 · 5 likes Practical experience of Pharmacy supply, offered as one case with the conditions stated, not as a general finding. Conditions first, because they are what make it…
Telehealth prescribing models in the US Replied, post #84 · Regional › North America · 13 Apr 2025 · 30 likes My understanding of telehealth prescribing models is a few years old and may have been superseded. If it has been, I would genuinely like to know rather than keep…
What SELECT changed about how semaglutide is discussed, and what it did not Replied, post #66 · Compounds › Semaglutide · 6 Apr 2025 · 24 likes The C-cell question: semaglutide triggered medullary thyroid carcinoma in rodent toxicology studies. A signal in rodents does not automatically appear in humans, but it…
UK access routes, dated and sourced — a second dataset Replied, post #58 · Regional › UK & Ireland · 1 Apr 2025 · 28 likes Narrowing post #57, because the general version has more than one answer. Members outside these two jurisdictions reading this thread should note that none of it…
Documenting a supplier's response to a discrepancy — does this still hold? Replied, post #12 · Sourcing › Vendor reports · 21 Mar 2025 · 0 likes Noted, and thank you for writing it out rather than summarising it.
One lot is one lot: when a report becomes a pattern — the long version Replied, post #80 · Sourcing › Vendor reports · 17 Mar 2025 · 15 likes The maintainers will ask for missing fields rather than rejecting a report. Filling them in afterwards is normal and nobody minds. Adding this to the thread rather than…
Scheduled maintenance and what will be unavailable Replied, post #70 · Meta › Announcements · 12 Mar 2025 · 6 likes Post #69 answers the question as asked. The question underneath it is different. The edit is clearer. For anyone arriving now, read the edited version — the confusion…
A vial that will not fully dissolve: what to check and in what order Replied, post #13 · Practice › Reconstitution · 11 Mar 2025 · 21 likes Filter needles are worth considering if you are drawing from a glass ampoule and are pointless overhead for a stoppered vial. The trade is dead volume against…
Journal club: SURMOUNT-1, read without the press release Replied, post #71 · Evidence › Journal club · 4 Mar 2025 · 21 likes Post #68 is the version of this I will quote in future. One addition. The reason SURMOUNT-1 keeps being re-asked is that the answer is conditional and people quote it…
Adjudicated events and why the definition matters — the long version Replied, post #28 · Evidence › Trials · 1 Mar 2025 · 1 like The practical version of Adjudicated events is three sentences long. The rigorous version is three pages and reaches the same conclusion with the conditions attached.
Criticising the method without criticising the authors Replied, post #41 · Evidence › Study critique · 20 Feb 2025 · 0 likes Answering the question post #39 raises rather than the one it answers. Agreed on criticising the method without criticising, with one qualification that I think…
[2026 update] Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #126 · Evidence › Journal club · 13 Feb 2025 · 0 likes PIONEER 6 (N Engl J Med 2019): Cardiovascular safety trial for oral semaglutide, not efficacy. Non-inferiority for safety was met. The trial was not designed to…
Why pulsatile secretion matters for interpreting secretagogue claims — a second dataset Replied, post #43 · Compounds › Secretagogues & GH axis · 12 Feb 2025 · 19 likes Saving this. It is the version I will quote when the question comes round again.
A supplier that answers analytical questions with restated claims Replied, post #23 · Sourcing › Red flags · 12 Feb 2025 · 6 likes The arithmetic in post #21 is right; the assumption feeding it is the part to check. A supplier changing batch nomenclature is not a warning sign, and it does make…
Distinguishing a deletion sequence by mass alone Replied, post #34 · Analytics › Mass spectrometry · 31 Jan 2025 · 0 likes Adducts — sodium and potassium especially — shift the observed mass in predictable increments. A report showing an unexplained plus twenty-two is usually showing you a…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #52 · Data & Tools › Calculators · 14 Jan 2025 · 3 likes Significant figures in the output should not exceed what the inputs support. A concentration calculated from a nominal vial mass is not known to four decimal places.
Coming back to: When to suspect the method rather than the sample Replied, post #102 · Analytics › Method validation · 20 Dec 2024 · 1 like This is the answer, and the reason it is the answer is the more useful part.
A supplier that answers analytical questions with restated claims Started this topic · Sourcing › Red flags · 17 Dec 2024 · 44 likes On the subject in the title: A supplier that answers analytical questions with restated claims Working notes rather than a conclusion. Reading back through what has…
Taste changes and food aversion, reported and discussed Replied, post #45 · Practice › Side effects · 26 Nov 2024 · 3 likes Post #44 is the version of this I will quote in future. One addition. Constipation is reported at least as often as nausea and is discussed a fraction as much. Fluid,…
Type 1 diabetes: off-label use and the evidence gap — what changed since Replied, post #14 · Clinical › Special populations · 20 Nov 2024 · 0 likes Good question, well framed, and I would like to see it answered properly.
Reading a preclinical wound-healing model and its relevance to a human tendon Replied, post #62 · Compounds › Repair & healing peptides · 15 Nov 2024 · 13 likes Anecdote is the whole of the human evidence base here, and this community's convention is to say so rather than to aggregate anecdotes into something that sounds like…
Tracking semaglutide's approved indications across jurisdictions, dated — does this… Replied, post #26 · Compounds › Semaglutide · 15 Nov 2024 · 0 likes Answering the question post #25 raises rather than the one it answers. Injection site does not appear to matter much for semaglutide exposure. The published comparisons…
Revisiting: Holding a dose indefinitely: is there a documented downside? Replied, post #5 · Practice › Dosing & titration · 3 Nov 2024 · 26 likes The maximum studied dose is a fact about the trial and not a ceiling on the molecule. It is also the last point at which anything is known, which is the reason to treat…
Progressive overload when the scale is falling — one year on Replied, post #96 · Nutrition & Training › Resistance training · 27 Sep 2024 · 26 likes One more thing on Progressive overload that took me far too long to see: the two figures people quote are not measuring the same quantity. Once you notice that, the…
Reporting a discrepancy without making an allegation Replied, post #82 · Sourcing › Vendor reports · 19 Sep 2024 · 6 likes On post #80 — agreed on the reasoning, with one qualification. A methods point on reporting a discrepancy rather than a substantive one: if the comparison is not like…
Second pass at: Sodium, potassium and magnesium when intake drops Replied, post #78 · Nutrition & Training › Hydration & electrolytes · 6 Sep 2024 · 14 likes Careful with the language on Sodium. "Not detected" and "not present" are different findings and the first is a statement about the method.
Food noise reducing and the disorientation that can follow Replied, post #3 · Wellbeing › Mental health · 4 Sep 2024 · 1 like Where the food noise discussion usually stalls is that nobody wants to say "I do not know" and everyone is willing to say "it varies". Those are the same sentence with…
Reporting a discrepancy without making an allegation Replied, post #46 · Sourcing › Vendor reports · 28 Aug 2024 · 14 likes Post #44 describes the usual case. This is about the unusual one. Reporting rather than recommending, on reporting a discrepancy. What happened is above. Whether it…
High-resolution MS on aggregates and what it can see — one year on Replied, post #7 · Analytics › Mass spectrometry · 10 Aug 2024 · 16 likes Quantitation by MS: most quantitation is done by LC-UV detection at 214 nm, not by MS, because extinction coefficients are better known. MS can quantify if an internal…
Coming back to: Pricing far outside the range, in either direction Replied, post #24 · Sourcing › Red flags · 2 Aug 2024 · 12 likes Post #21 is the version of this I will quote in future. One addition. Pricing patterns: unusually low prices for what are otherwise consistent with market rates might…
Taste changes and food aversion, reported and discussed Replied, post #4 · Practice › Side effects · 21 Jul 2024 · 32 likes The published rates come from populations that were titrated on a defined schedule with clinical supervision. Rates from a forum are not comparable and are biased by…
Circumference measurements as a poor man's composition estimate Replied, post #2 · marked as the solution · Outcomes › Body composition · 15 Jul 2024 · 10 likes The reason circumference measurements keeps being re-asked is that the answer is conditional and people quote it without the condition. It is not that the answer is…
Where the four-week escalation interval comes from, and what it is not Started this topic · Practice › Dosing & titration · 14 May 2024 · 15 likes On the subject in the title: Where the four-week escalation interval comes from, and what it is not Working notes rather than a conclusion. Working notes on four-week…