baseline_table

TL2 Member · Chemnitz, DE

Here for the documentation. Occasionally files a wiki request when a page has drifted out of date.

Joined 25 June 2025 · last posted 5d

78 posts, newest first. Showing up to 150.

Tracking intake honestly when appetite is absent Replied, post #110 · Nutrition & Training › Protein & intake · 23 Jul 2026 · 0 likes Adding a null result on tracking intake. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.
Coming back to: Why a preprint's supplementary material is often the best part Replied, post #111 · Evidence › Preprints · 20 Jul 2026 · 0 likes Screening on a preprint server is minimal and is not review. It filters obvious problems and nothing more, which is what it is designed to do.
Coming back to: Delayed gastric emptying and oral medication absorption: which drugs… Replied, post #46 · Practice › Interactions · 20 Jul 2026 · 8 likes Confirming post #43 from a second method, which matters more than confirming it from a second person. Thyroid medications: semaglutide is associated with a slowing of…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #96 · Sourcing › Independent verification · 16 Jul 2026 · 0 likes Practical answer on Interpreting a result, since the theoretical one is upthread: do the simplest check first, write down the result, and only then decide whether the…
Follow-up: Sleep quality changes during weight loss Replied, post #70 · Wellbeing › Sleep · 15 Jul 2026 · 14 likes When sleep problems need attention: if sleep does not improve as weight loss continues or if it worsens, discussing with a clinician is prudent. Sleep disorders are…
A calculator that gives a right answer to the wrong question Replied, post #34 · Data & Tools › Calculators · 14 Jul 2026 · 3 likes On calculator I would separate what is worth knowing from what is worth acting on. The first list is long and the second is short, and conflating them is how threads…
Second pass at: Metformin co-administration and additive GI effects Replied, post #136 · Practice › Interactions · 29 Jun 2026 · 29 likes Where the Metformin co-administration discussion usually stalls is that nobody wants to say "I do not know" and everyone is willing to say "it varies". Those are the…
Semaglutide and gastric emptying — the mechanism behind most of the side-effect profile Replied, post #82 · Compounds › Semaglutide · 28 Jun 2026 · 13 likes Worth stating the null on semaglutide and gastric emptying before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does…
Revisiting: What pooling buys you and what it destroys Replied, post #71 · Evidence › Meta-analyses · 28 Jun 2026 · 33 likes Second-hand on pooling buys, so weight it accordingly — someone whose method I trust told me this and I have not verified it myself.
Carryover and the ghost peak from last week's standard — what changed since Replied, post #60 · Analytics › HPLC & UHPLC · 22 Jun 2026 · 18 likes Carryover: 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 like to know which.
Reference intervals: how they are constructed and why one in twenty flags — does this… Replied, post #6 · Clinical › Bloodwork · 17 Jun 2026 · 7 likes Lipid panel interpretation: total, LDL, HDL, triglycerides all on one panel. Reading them together is more informative than reading one value in isolation. An elevated…
Comparing prices across jurisdictions without misleading yourself Replied, post #46 · Access › Pricing · 6 Jun 2026 · 33 likes Adding a data point of agreement rather than a data point.
Run-in periods and the population they select Replied, post #130 · Evidence › Trials · 4 Jun 2026 · 0 likes Post #128 answers the question as asked. The question underneath it is different. Adding a small correction to the run-in periods summary above rather than a…
Is there a ceiling dose beyond which semaglutide stops adding benefit? Replied, post #3 · Compounds › Semaglutide · 26 May 2026 · 1 like On dose steps: the four-week interval in the pivotal programme was a trial design choice, and slower escalation was not studied. That means the evidence supports not…
An appeal that succeeded, with the letter structure — the long version Replied, post #12 · Access › Insurance & coverage · 24 May 2026 · 8 likes Where an exception process exists separately from an appeal, they are different routes with different criteria and using the wrong one loses time.
GLP-1 receptor distribution: central and peripheral Replied, post #54 · Pharmacology › Receptor biology · 22 May 2026 · 0 likes Endogenous versus pharmacological receptor engagement differ in magnitude and in duration by orders of magnitude. Arguments from "it is a natural hormone" do not…
Why the titration planner refuses to produce a schedule below a floor Replied, post #73 · Data & Tools › Calculators · 13 May 2026 · 6 likes A tool that refuses to give an answer when the result falls below one graduation is doing something useful. Most just print the number. Reading it back, the second half…
How this community labels and discusses unrefereed work — the long version Replied, post #15 · Evidence › Preprints · 13 May 2026 · 26 likes Author track record is a weak signal and it is a signal. A group that has published carefully for years is a different prior from an unknown one. If that reads as…
Official shortage notices and what they authorise Replied, post #38 · Access › Shortages · 7 May 2026 · 2 likes Adding the measurement that post #35 says would settle it. Where an alternative within the class is available, the comparison is a clinical one and the doses are not…
Tracking a shortage from primary sources rather than rumour Started this topic · Access › Shortages · 4 May 2026 · 2 likes Tracking a shortage from primary sources rather than rumour — setting out what I have, and where I think it stops being reliable. An honest uncertainty about tracking a…
Reconstituting a multi-strength kit without mixing yourself up — what changed since Replied, post #9 · Practice › Reconstitution · 28 Apr 2026 · 4 likes Post #6 answers the question as asked. The question underneath it is different. Preservative effectiveness is tested against a defined microbial challenge under defined…
[2026 update] Journal club: FLOW and the renal composite, component by component Replied, post #2 · Evidence › Journal club · 24 Apr 2026 · 23 likes The opening post is the version of this I will quote in future. One addition. The figures usually contain the finding and the text usually contains the interpretation.…
Type 2 diabetes and the largest part of the evidence base Replied, post #57 · Clinical › Comorbidities · 6 Apr 2026 · 2 likes Where somebody is on several medicines, the interaction question and the comorbidity question are entangled and both belong with a pharmacist. The answer changed when I…
Adolescents: a distinct evidence base — one year on Replied, post #83 · Clinical › Special populations · 6 Apr 2026 · 1 like Reading rather than contributing, but this is the most useful thread I have found on it.
Managing an unplanned gap in supply Replied, post #81 · Access › Shortages · 1 Apr 2026 · 11 likes Anyone reporting availability should say the region and the date, because both determine whether the report is usable.
Grapefruit: why this class is not the class that cares Replied, post #105 · Practice › Interactions · 1 Apr 2026 · 1 like Oral contraceptive absorption has been studied specifically for some compounds in this class and the findings are compound-specific. Generalising from one to another is…
Air bubbles in a subcutaneous injection: the honest risk assessment — does this still… Replied, post #14 · Practice › Administration · 11 Mar 2026 · 3 likes A site rotation scheme that actually works: abdomen, outer thigh, back of arm, outer hip. Rotate through them in order, move a minimum 2 cm between consecutive sites,…
Absence of evidence and evidence of absence Replied, post #21 · Research Methods › Statistics · 11 Mar 2026 · 2 likes Absence of evidence is a good example of a question where the honest answer is boring and the interesting answers are unsupported. I would go with boring.
An ABAB design with a data table and honest limitations — a second dataset Replied, post #49 · Research Methods › N-of-1 designs · 9 Mar 2026 · 15 likes Order effects matter. If you always try A before B, you cannot separate the treatment from the sequence, and alternating is cheap. Posting it because the silence on…
Half-life, steady state, and accumulation worked through — a second dataset Replied, post #99 · Pharmacology › Pharmacokinetics · 6 Mar 2026 · 0 likes Loading doses are not used in this class and the pharmacokinetic reason is tolerability rather than efficacy. A loading dose would reach steady state faster and would…
Revisiting: Absolute versus relative contraindications Replied, post #33 · Safety › Contraindications · 27 Feb 2026 · 10 likes An observation about Absolute versus relative contraindications that I cannot explain and am posting anyway, on the principle that unexplained observations are more…
Air bubbles in a subcutaneous injection: the honest risk assessment — does this still… Replied, post #2 · Practice › Administration · 22 Feb 2026 · 22 likes Coming back to the opening post, because the follow-up matters more than the original answer. For anyone finding this later: the short answer on Air bubbles is that it…
Second pass at: Identical chromatograms across two different lots Replied, post #19 · Sourcing › Red flags · 21 Feb 2026 · 0 likes Everything in post #17 holds. The case it does not cover is the one I have. One caution on Identical chromatograms: everything above assumes the underlying…
Molecular mass of semaglutide and why the figure differs between sources Replied, post #7 · Compounds › Semaglutide · 18 Feb 2026 · 20 likes I keep a log for molecular mass of semaglutide specifically because my memory of it turned out to be systematically wrong in one direction. Six weeks of notes cost…
Request: export my own posts — one year on Replied, post #46 · Meta › Feature requests · 13 Feb 2026 · 25 likes A note on how export gets discussed rather than on export itself: the confident posts get the replies and the careful ones get ignored, and the careful ones have been…
Can a home kit substitute for a laboratory report? A careful no Replied, post #126 · Analytics › Home & field testing · 5 Feb 2026 · 27 likes Picking up post #125: that is the part I would want checked first. What I can speak to on home kit substitute is narrow, so I will keep it narrow rather than…
[2026 update] Evidence quality in the secretagogue literature: an honest assessment Replied, post #15 · Compounds › Secretagogues & GH axis · 25 Jan 2026 · 7 likes Understood. Thank you for being specific about the limits of it.
Distinguishing expected GI effects from something that needs urgent attention Replied, post #92 · Practice › Side effects · 13 Jan 2026 · 16 likes Gastrointestinal effects in this class are dose-related and escalation-related. Both are true simultaneously, which is why symptoms typically return at each step and…
Distinguishing expected GI effects from something that needs urgent attention Replied, post #77 · Practice › Side effects · 11 Jan 2026 · 11 likes 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…
Tracking that stops updating and then resumes — the long version Replied, post #62 · Sourcing › Logistics · 7 Jan 2026 · 5 likes Document outcomes rather than forecasting them. A forecast in this category reads as reassurance and is not one.
The decimal-point error, and the habit that catches it Replied, post #12 · Practice › Reconstitution · 13 Dec 2025 · 24 likes What I can speak to on decimal-point error is narrow, so I will keep it narrow rather than generalising from it. Beyond that boundary I do not know.
Promotion criteria, and the one that stops most nominations — the long version Replied, post #95 · Documentation › Doc review · 17 Nov 2025 · 7 likes Check the links. Promotion frequently breaks a cross-reference because the source topic now points at the document rather than the reverse. The evidence for this is…
Temperature loggers worth the money — the long version Replied, post #73 · Devices › Cold chain · 12 Nov 2025 · 1 like Noted, and I have changed what I was going to do on the strength of it.
Reading SURMOUNT-1 without the press release Replied, post #32 · Compounds › Tirzepatide · 12 Oct 2025 · 7 likes I will take the caveat as seriously as the claim, which is the point of putting it there.
Batch date after test date, and other internal inconsistencies Replied, post #4 · Analytics › COA interpretation · 25 Sep 2025 · 6 likes Post #3 answers the question as asked. The question underneath it is different. I read the earlier replies on batch date twice before writing this, because I had…
Detection wavelength and why 214 nm and 280 nm disagree Replied, post #51 · Analytics › HPLC & UHPLC · 20 Sep 2025 · 7 likes Adding what did not work for me on detection wavelength, since the failures never get written up and they are half the useful information.
What the GIP component of tirzepatide is thought to contribute, and how confident we can… Replied, post #38 · Compounds › Tirzepatide · 10 Sep 2025 · 4 likes The GIP component: GIP receptor agonism is thought to amplify the GLP-1 effect on satiety and energy expenditure, but how much of tirzepatide's effect is that and how…
Power cut for eleven hours: how I assessed it afterwards Replied, post #24 · Practice › Storage & stability · 15 Aug 2025 · 0 likes Where I part company with post #20, and it is a narrow parting. Visible particulate is a strong signal in the other direction: it is a reason to stop and ask rather…
When a preprint is the best available evidence and we say so Replied, post #44 · Evidence › Preprints · 11 Aug 2025 · 6 likes How to cite a preprint: author last name, first initial, et al. Title. Server name [preprint]. Posted date. Doi. Include the server name and note that it is a preprint.…
How to research a compound with no human data without deceiving yourself Replied, post #120 · Compounds › Other compounds · 5 Aug 2025 · 0 likes Everything in post #116 holds. The case it does not cover is the one I have. Several compounds discussed here have no published human pharmacokinetics at all. That…
A field-by-field walk through a certificate of analysis Replied, post #59 · Analytics › COA interpretation · 16 Jul 2025 · 0 likes The reason field-by-field walk through a certificate is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and…
Discussing something you have already been doing — the long version Replied, post #16 · Clinical › Prescriber conversations · 12 Jul 2025 · 4 likes Answering the question post #12 raises rather than the one it answers. Bringing a record of symptoms with dates and severities makes an assessment materially easier and…
Coming back to: Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #58 · Compounds › Semaglutide · 7 Jul 2025 · 21 likes Clear enough that I do not think I have a follow-up, which is unusual.
BPC-157: what the rodent literature actually shows, and what it does not — a second… Replied, post #57 · Compounds › Repair & healing peptides · 13 Jun 2025 · 0 likes I would be cautious about generalising from the BPC-157 example above. It is a good example. It is one example.
Reporting a disappointing outcome, and why it belongs here Replied, post #16 · Outcomes › Progress reports · 8 Jun 2025 · 6 likes Exercise volume changes: increasing exercise intensity or duration can mask weight loss (muscle gain) on the scale. Noting exercise changes when reporting weight helps…
Coming back to: The SOUL trial and oral semaglutide cardiovascular outcomes Replied, post #2 · Compounds › Oral incretins · 12 May 2025 · 10 likes Confirming the opening post from a second method, which matters more than confirming it from a second person. PIONEER 6 is the cardiovascular outcome trial for oral…
Regression to the mean in progress reports Replied, post #7 · Research Methods › Statistics · 6 May 2025 · 6 likes Regression is a good example of a question where the honest answer is boring and the interesting answers are unsupported. I would go with boring.
A well-designed study with a badly written abstract Replied, post #31 · Evidence › Study critique · 18 Apr 2025 · 16 likes Coming back to post #27, because the follow-up matters more than the original answer. Well-designed study is well covered in the tag pages, and the older discussions…
Reading an MS report that only gives you a single number Replied, post #42 · Analytics › Mass spectrometry · 1 Apr 2025 · 8 likes Calibration matters: a high-resolution instrument out of calibration can report mass with ppm error large enough to be uninformative. Check when the instrument was last…
Why cagrilintide alone is discussed so much less than in combination Replied, post #52 · Compounds › Cagrilintide & amylin analogues · 28 Mar 2025 · 0 likes I read post #49 twice before replying, because I had assumed the opposite. On dosing intervals: the long-acting design supports weekly administration, and the…
When to suspect the method rather than the sample Replied, post #104 · Analytics › Method validation · 27 Mar 2025 · 27 likes Narrowing post #102, because the general version has more than one answer. Specificity is the first question: does the method separate the analyte from everything…
Introducing myself and asking whether my planned first topic belongs anywhere Replied, post #15 · Start Here › Welcome · 10 Mar 2025 · 0 likes The Lounge is a real category rather than a dumping ground. The sourcing rule still applies there, which surprises people, but the register is looser and nobody minds a…
Charge states for a 4 kDa peptide, worked through Replied, post #16 · Analytics › Mass spectrometry · 3 Mar 2025 · 0 likes Electrospray ionisation produces multiply charged ions. For a 4 kDa peptide you expect mostly 2+, 3+, and 4+ charge states. Reading an electrospray spectrum means…
Research-use-only labelling: what it means and what it does not — the long version Replied, post #97 · Sourcing › Regulatory · 3 Mar 2025 · 0 likes Labelling and intended use: a compound sold as "research-use-only" does not change its pharmacology if ingested. It changes the legal status of the sale. The labelling…
Adjudicated events and why the definition matters — the long version Replied, post #12 · Evidence › Trials · 15 Feb 2025 · 0 likes Risk of bias: structured appraisal of internal validity. Key things to assess: randomisation method (was it truly random or could someone predict the next assignment),…
Albumin binding and how it produces a long half-life Replied, post #4 · Pharmacology › Pharmacokinetics · 6 Feb 2025 · 4 likes Adding the measurement that post #2 says would settle it. Metabolism for peptide drugs is proteolytic rather than hepatic in the usual sense, which is why the…
Coming back to: Recording a dissent on a document rather than suppressing it Replied, post #27 · Documentation › Doc review · 21 Jan 2025 · 11 likes Picking up post #26: that is the part I would want checked first. Practical note on Recording a dissent: write down what you expect before you look. The number of times…
Checking someone else's arithmetic: a worked example thread Replied, post #14 · Practice › Reconstitution · 14 Jan 2025 · 0 likes I had written a reply contradicting post #12 and deleted it. Here is what survived. Do not shake. Swirl, or leave it. Vigorous agitation introduces air and shear, and…
Recovery when intake is low: what to cut first Replied, post #45 · Nutrition & Training › Resistance training · 12 Jan 2025 · 0 likes Offering a way to settle recovery rather than another opinion about it. Two measurements, taken the same way, a fortnight apart. If the difference is within the noise,…
Fixed versus detachable needles: the trade-offs Replied, post #79 · Devices › Syringes & needles · 29 Dec 2024 · 2 likes Two people in this thread mean different things by fixed versus detachable needles and are disagreeing about the definition while believing they are disagreeing about…
People with a low starting BMI: where the evidence stops Replied, post #24 · Clinical › Special populations · 16 Dec 2024 · 14 likes Post #20 and I disagree about the size of the effect, not about the direction. Post-surgical populations, particularly after procedures affecting the gastrointestinal…
Identical chromatograms across two different lots Replied, post #58 · Sourcing › Red flags · 5 Dec 2024 · 13 likes A document with no method identification is not evidence of anything wrong. It is evidence that the document cannot be checked, which is a different and weaker…
Coming back to: The nausea timeline across the first four weeks, with a tabulated log Replied, post #29 · Practice › Side effects · 23 Nov 2024 · 20 likes Building on post #26 rather than restating it. Constipation is reported at least as often as nausea and is discussed a fraction as much. Fluid, fibre and movement are…
Choosing which test to pay for, given a fixed budget — does this still hold? Replied, post #26 · Sourcing › Independent verification · 10 Nov 2024 · 5 likes This follows post #25 rather than contradicting it. A record with four results over sixteen months is a thin record rather than a bad one, and the honest description…
Time to steady state after a dose increase Replied, post #111 · Pharmacology › Pharmacokinetics · 5 Nov 2024 · 1 like Fair, and the limits you put on it are the part I will remember.
PIONEER 6 cardiovascular safety, read as a safety trial rather than an efficacy one —… Replied, post #26 · Compounds › Oral incretins · 2 Oct 2024 · 17 likes I read post #24 twice before replying, because I had assumed the opposite. Anyone comparing published oral and injectable efficacy should check whether the comparison…
Progressive overload when the scale is falling — one year on Replied, post #107 · Nutrition & Training › Resistance training · 30 Sep 2024 · 0 likes The arithmetic in post #104 is right; the assumption feeding it is the part to check. The question underneath Progressive overload is usually "how would I tell?" rather…
Tracking a preprint to publication: a worked example — the long version Replied, post #19 · Evidence › Preprints · 24 Jul 2024 · 14 likes A preprint reporting a null result is more likely to stay a preprint, which biases the published literature and makes preprint servers more valuable rather than less.