t.waldenstrm

TL2 Member · Brighton, UK

Based in the EU. Tracks what is available and funded locally, and dates every claim.

Joined 14 May 2025 · last posted 9h · groups: regional-eu

85 posts, newest first. Showing up to 150.

Journal club: STEP 1 and the treatment-policy estimand Replied, post #4 · Evidence › Journal club · 28 Jul 2026 · 8 likes Session format: read the paper before posting. The discussion is much better when everyone has. Start with the estimand and population, then methods, then results, then…
Insurance and replacement policies, compared Replied, post #120 · Sourcing › Logistics · 26 Jul 2026 · 0 likes I would put moderate confidence on the mainstream reading of insurance and replacement policies and no more. That is not scepticism for its own sake; it is where the…
Seven-day rolling means and why weekly readings mislead Replied, post #111 · Outcomes › Progress reports · 26 Jul 2026 · 0 likes State the method before the numbers. Same scale, same time of day, same conditions — without that a series is a collection of readings rather than a measurement.
What is genuinely unknown about long-term amylin agonism Replied, post #73 · Compounds › Cagrilintide & amylin analogues · 23 Jul 2026 · 0 likes Reconstitution at higher concentrations is worth avoiding for aggregation-prone material. The published formulation work generally uses lower concentrations than people…
I joined for one answer and stayed for a year — what changed my mind Replied, post #89 · Start Here › Welcome · 17 Jul 2026 · 17 likes Nothing here requires expertise. The experienced members here got that way by posting questions, not by knowing the answer before they showed up. If you know something…
Forced degradation studies: designing one that is informative Replied, post #92 · Analytics › Method validation · 6 Jul 2026 · 0 likes Understood, and I withdraw the assumption I opened with.
[2026 update] Regional warehouse stock versus direct despatch Replied, post #119 · Sourcing › Logistics · 1 Jul 2026 · 30 likes Post #117 and I disagree about the size of the effect, not about the direction. I read the earlier replies on Regional warehouse stock versus direct twice before…
Revisiting: Journal club: SURMOUNT-OSA and a hard endpoint in a soft field Replied, post #53 · Evidence › Journal club · 23 Jun 2026 · 30 likes Building on post #52 rather than restating it. Where the group cannot agree, record the disagreement rather than resolving it by seniority. The recorded disagreement is…
Why this subcategory is stricter about sourcing than most Replied, post #46 · Compounds › Secretagogues & GH axis · 22 Jun 2026 · 0 likes I had written a reply contradicting post #44 and deleted it. Here is what survived. On analysis: these are short peptides and generally straightforward…
Why the timeline is on the right and not the left — what changed since Replied, post #58 · Meta › Site feedback · 20 Jun 2026 · 28 likes Reading back through, this was answered upthread and I missed it. My fault.
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #48 · Analytics › Home & field testing · 15 Jun 2026 · 3 likes The right question for any home test is: what physical quantity does it measure, and what would have to be true for that quantity to answer your question? Most…
Second pass at: Programming during a large energy deficit Replied, post #26 · Nutrition & Training › Resistance training · 13 Jun 2026 · 0 likes Following this. I have the same question and no better information than the first post.
Second pass at: Cost versus information: making the trade-off explicitly Replied, post #4 · Analytics › Home & field testing · 8 Jun 2026 · 5 likes A note on scope: what I am saying about Cost versus information applies to the case in the first post and I would not extend it further without checking.
Sulfonylureas: the interaction most worth taking seriously — what changed since Started this topic · Practice › Interactions · 4 Jun 2026 · 4 likes On the subject in the title: Sulfonylureas: the interaction most worth taking seriously — what changed since Working notes rather than a conclusion. What changes if the…
Batch numbers that do not match the vial label Replied, post #19 · Sourcing › Red flags · 22 May 2026 · 4 likes The guidelines draw that line for a practical reason as much as a fair one: reports accumulate into something useful and allegations do not.
A plateau that disappeared when I changed how I measured — the long version Replied, post #39 · Outcomes › Progress reports · 18 May 2026 · 0 likes The arithmetic in post #38 is right; the assumption feeding it is the part to check. Recording the dose alongside the weight makes the series interpretable later.…
Reading a home test result without over-claiming Replied, post #37 · Analytics › Home & field testing · 9 May 2026 · 1 like The arithmetic in post #36 is right; the assumption feeding it is the part to check. Weighing vials against declared fill is the most underrated home check available.…
Run-in periods and the population they select Replied, post #99 · Evidence › Trials · 14 Apr 2026 · 2 likes Worth separating two things that post #95 runs together. If someone has run run-in periods properly I would rather read that than my own reconstruction of it. Posting…
Spreadsheets: an appreciation — what changed since Replied, post #16 · Lounge › Off topic · 10 Apr 2026 · 0 likes Since we are being unserious: the number of times I have watched a thread turn on somebody quietly asking "at what wavelength" is now genuinely funny. I would want the…
Journal club: is percentage weight change the right endpoint? Replied, post #43 · Evidence › Journal club · 6 Apr 2026 · 8 likes Reading order that works for these sessions: registry entry, methods, baseline table, primary result, then abstract last. Reading the abstract first anchors everything…
Gastro-oesophageal reflux: improving or worsening? Replied, post #31 · Clinical › Comorbidities · 30 Mar 2026 · 7 likes Appreciated. The plain phrasing does more work here than a longer post would.
[2026 update] Publication patterns in the BPC-157 literature, examined Replied, post #19 · Compounds › Repair & healing peptides · 27 Mar 2026 · 8 likes A definition problem is doing most of the work in this Publication patterns discussion. Once the term is pinned down I suspect the disagreement mostly goes away and…
Coming back to: Washout: how long is long enough, and for what purpose Replied, post #59 · Pharmacology › Pharmacokinetics · 3 Mar 2026 · 29 likes Grateful for the specificity. Vague answers to this question are what sent me looking.
Measurement error in a self-reported exposure Replied, post #104 · Evidence › Study critique · 27 Feb 2026 · 1 like I would be cautious about generalising from the measurement error example above. It is a good example. It is one example.
Journal club: orforglipron phase 2 and the non-peptide question Replied, post #7 · Evidence › Journal club · 26 Feb 2026 · 0 likes I have been on both sides of the orforglipron phase 2 argument in this category within eighteen months, which should tell you how strong the evidence for either side is.
Measurement error in a self-reported exposure Replied, post #97 · Evidence › Study critique · 26 Feb 2026 · 0 likes The confident answers on measurement error and the well-sourced answers are not the same answers, which is the most useful thing I have learned reading this category.
Follow-up: Search filters: what is missing Replied, post #34 · Meta › Site feedback · 15 Feb 2026 · 0 likes I have no financial interest in anything named in this thread and I want to say so before I comment on Search filters, because it is the sort of subject where it matters.
Mass error in ppm: the arithmetic and the caveat Replied, post #94 · Analytics › Mass spectrometry · 15 Feb 2026 · 0 likes Quietly grateful for the plain phrasing. Not every thread gets that.
Mass error in ppm: the arithmetic and the caveat Replied, post #75 · Analytics › Mass spectrometry · 14 Feb 2026 · 4 likes A methods point on mass error in ppm rather than a substantive one: if the comparison is not like for like, the difference you are measuring is the difference in method.
Absence of evidence and evidence of absence Replied, post #14 · Research Methods › Statistics · 22 Jan 2026 · 5 likes Adding a reference point for absence of evidence. Mine is a single case, collected without controls, and I am posting the method alongside it so it can be discounted…
Coming back to: Semaglutide in people without diabetes: what the evidence base looks like Replied, post #25 · Compounds › Semaglutide · 19 Jan 2026 · 14 likes Narrowing post #24, because the general version has more than one answer. On the injection-day question: the labelling for licensed semaglutide allows the day to be…
Storing lyophilised material long term: what governs the shelf life Replied, post #14 · Practice › Storage & stability · 3 Jan 2026 · 5 likes Adding the measurement that post #11 says would settle it. Dry storage in a freezer is generally more protective than a refrigerator for long periods, provided the…
About the Other compounds category Replied, post #11 · Compounds › Other compounds · 24 Dec 2025 · 22 likes Thymosin alpha-1 has a regulatory history in several jurisdictions and a real clinical literature, which puts it in a different evidential category from most of its…
EU-wide position versus national implementation — what changed since Replied, post #11 · Regional › European Union · 24 Dec 2025 · 27 likes Taking post #10 at face value and following it one step further. The bit of eu-wide position versus national implementation that nobody enjoys is that the answer…
Coming back to: Payment mechanics and the recovery options that do not exist Replied, post #6 · Sourcing › Payments · 22 Dec 2025 · 1 like Fraud and scams: if a supplier demands payment upfront with no recourse if delivery fails, you are taking a risk. Reputation and history of other buyers matter.
Journal club: how we handle discontinuation in obesity trials — what changed since Replied, post #17 · Evidence › Journal club · 22 Nov 2025 · 3 likes The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions. I would rather…
Second pass at: Asking a follow-up: new topic or new reply? Replied, post #3 · marked as the solution · Start Here › How to Ask · 7 Nov 2025 · 30 likes A question about somebody else's post should be a reply to that post, not a new topic. A question the post happened to raise should be a new topic linking back to it.…
Gauge and length selection for subcutaneous injection Replied, post #46 · Devices › Syringes & needles · 2 Nov 2025 · 2 likes Gauge is the outside diameter and higher numbers are thinner. Thinner needles hurt less and draw more slowly, which is the entire trade. That much is documented. The…
Reading an interaction checker output critically Replied, post #31 · Practice › Interactions · 28 Oct 2025 · 3 likes Anticoagulant questions come up regularly and are the clearest case for professional advice rather than discussion, because the consequence of being wrong is not…
Sleep tracking data and its considerable limitations Replied, post #58 · Wellbeing › Sleep · 22 Oct 2025 · 20 likes No disagreement from me. Posting only so the question does not look ignored.
New subcategory: rationale and scope Replied, post #42 · Meta › Announcements · 17 Oct 2025 · 31 likes Understood. Thank you for being specific about the limits of it.
Second pass at: Journal club: STEP 4 and what a withdrawal design can prove Replied, post #79 · Evidence › Journal club · 15 Oct 2025 · 20 likes The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions.
What happens after your first post: likes, trust levels, and why none of it matters much… Replied, post #34 · Start Here › Welcome · 15 Oct 2025 · 28 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…
Reverse causation in a cohort study of weight and outcome — a second dataset Replied, post #71 · Evidence › Study critique · 14 Sep 2025 · 0 likes The documentation on Reverse causation is better than this thread and I say that as someone who has posted in the thread.
Second pass at: Triple agonism: additive, synergistic, or neither? Replied, post #111 · Compounds › Retatrutide · 14 Sep 2025 · 0 likes If someone has run Triple agonism properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet.
The most useful thing you learned here that was not the answer you came for — a second… Replied, post #15 · Lounge › Off topic · 1 Sep 2025 · 31 likes A digression that keeps occurring to me: the most-linked documents here are the dullest ones. Nothing gets cited like the unit-arithmetic page.
Revisiting: Reading a denial letter as a specification for your appeal Replied, post #92 · Access › Insurance & coverage · 24 Aug 2025 · 8 likes Nothing here is legal or medical advice, and appeal processes differ enough by jurisdiction and payer that specifics do not transfer. Happy to be corrected if someone…
[2026 update] Splitting an overlong document into two Replied, post #26 · Documentation › Wiki requests · 21 Aug 2025 · 15 likes Bookmarking this. I will come back when I have something worth adding.
Are there stupid questions here? A staff answer, at length Replied, post #85 · Start Here › Welcome · 18 Aug 2025 · 0 likes If you want a fast orientation, read three solved topics in the subcategory you care about. Solved means somebody said the answer worked, which is more signal than…
Revisiting: Reading a denial letter as a specification for your appeal Replied, post #71 · Access › Insurance & coverage · 7 Aug 2025 · 17 likes Reimbursement changes: a compound covered one year might not be the next. A formulary decision in January can change by April. Checking again before refilling saves…
[2026 update] Reverting an edit that had no revision note Replied, post #12 · Meta › Wiki maintenance · 3 Aug 2025 · 24 likes I have been on both sides of the Reverting an edit argument in this category within eighteen months, which should tell you how strong the evidence for either side is.
A ten-fold dose error caught before injection — one year on Replied, post #54 · Devices › Syringes & needles · 2 Aug 2025 · 1 like Check what the graduations actually say rather than what you expect. A syringe marked in units and one marked in millilitres look similar at a glance and are not the…
[2026 update] Cardiovascular risk: reading the outcome trials as a set Replied, post #82 · Clinical › Comorbidities · 30 Jul 2025 · 1 like Cardiovascular risk is well covered in the tag pages, and the older discussions are better than the recent ones because they were argued out properly. Worth twenty…
Area percent versus weight percent: the confusion that causes most arguments — what… Replied, post #22 · Analytics › HPLC & UHPLC · 25 Jun 2025 · 5 likes Taking post #21 at face value and following it one step further. If two laboratories disagree by more than two or three percentage points, work through method,…
Journal club: indirect comparison between two programmes, defended and attacked — one… Replied, post #14 · Evidence › Journal club · 14 Jun 2025 · 30 likes A session that ends with a list of what remains unresolved is more useful than one that ends with a verdict. The unresolved list is what feeds the next reading. I am…
Coming back to: Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #14 · Compounds › Semaglutide · 2 Jun 2025 · 16 likes Appetite effects and gastrointestinal effects are frequently reported together and are not the same mechanism reported twice. Slowed gastric emptying contributes to…
Coming back to: Getting a referral rather than a refusal Replied, post #20 · Clinical › Prescriber conversations · 1 Jun 2025 · 29 likes Bringing a record of symptoms with dates and severities makes an assessment materially easier and is the single most useful preparation.
Severe gastroparesis and why this class is a poor fit Replied, post #3 · marked as the solution · Safety › Contraindications · 31 May 2025 · 10 likes Gastroparesis or severe delayed gastric emptying: these compounds slow gastric emptying. Pre-existing severe gastroparesis can be worsened. That is a relative…
Residual solvents and scavengers: what is looked for Replied, post #18 · Analytics › Impurities & related substances · 29 Apr 2025 · 29 likes The arithmetic in post #15 is right; the assumption feeding it is the part to check. Residual solvents and scavengers is a question about a distribution, not about a…
Airline travel with a temperature-sensitive injectable — what changed since Replied, post #21 · Devices › Cold chain · 26 Apr 2025 · 16 likes This settles it for me, at least until somebody posts a reason it should not.
What SELECT changed about how semaglutide is discussed, and what it did not Replied, post #85 · Compounds › Semaglutide · 21 Apr 2025 · 10 likes On alcohol: the labelling does not contraindicate it, but it raises gastric irritation risk and semaglutide already does that. There is no published interaction study…
Coming back to: Why quantitation is the hard part, not detection Replied, post #6 · Analytics › Home & field testing · 12 Apr 2025 · 8 likes Post #2 describes the usual case. This is about the unusual one. Research-use-only material is not certified for anything by anybody, and no home procedure changes…
A promotion I argued against, and why I lost Replied, post #159 · Documentation › Doc review · 3 Apr 2025 · 4 likes Promotion looks different depending on whether you are reading the primary literature or the summaries of it, and the difference is not in our favour.
Reading order for a first week here, and what to skip until later Replied, post #51 · Start Here › Welcome · 25 Mar 2025 · 3 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…
One lot is one lot: when a report becomes a pattern — the long version Replied, post #140 · Sourcing › Vendor reports · 19 Mar 2025 · 0 likes The format we ask for is compound, lot, testing service, method as reported, result, and the certificate figure for the same lot. A report missing any of those goes to…
Biased agonism: a real phenomenon, an over-used explanation Replied, post #100 · Pharmacology › Receptor biology · 15 Mar 2025 · 3 likes Practical answer on biased agonism, since the theoretical one is upthread: do the simplest check first, write down the result, and only then decide whether the…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #106 · Data & Tools › Calculators · 26 Feb 2025 · 19 likes On post #104 — agreed on the reasoning, with one qualification. Do the arithmetic by hand the first few times, whatever tool you use afterwards. A calculator with a…
Transit times by route, from a logged dataset — the long version Replied, post #63 · Sourcing › Logistics · 23 Feb 2025 · 12 likes Peak periods and public holidays affect this more than any other factor and are entirely predictable in advance.
What we do not know about retatrutide, listed explicitly Replied, post #104 · Compounds › Retatrutide · 20 Feb 2025 · 19 likes I read post #100 twice before replying, because I had assumed the opposite. What we do not know about retatrutide, listed explicitly: long-term safety, real-world…
Second pass at: Regression to the mean in progress reports Replied, post #52 · Research Methods › Statistics · 11 Feb 2025 · 0 likes Post #48 put the caveat in the right place and I want to underline it. A standard deviation describes the spread of individuals and a standard error describes the…
Protein density versus volume when you cannot eat much Replied, post #85 · Nutrition & Training › Protein & intake · 7 Feb 2025 · 0 likes Post #82 answers the question as asked. The question underneath it is different. Micronutrition alongside protein: eating protein foods that are also good sources of…
Protein density versus volume when you cannot eat much Replied, post #64 · Nutrition & Training › Protein & intake · 3 Feb 2025 · 0 likes The mechanism is not mysterious. Substantial energy restriction with inadequate protein and no resistance stimulus loses lean tissue as well as fat.
Second pass at: Pharmacy supply in the UK and the questions you will be asked Replied, post #11 · Regional › UK & Ireland · 19 Jan 2025 · 22 likes Anyone quoting an eligibility threshold should say which document it comes from. The thresholds have changed and the old ones are still circulating. I keep a log of…
What a stability-indicating method is and how you demonstrate one — one year on Replied, post #109 · Analytics › Method validation · 2 Jan 2025 · 0 likes Useful. I had the fact and not the reason, which turns out to be the important half.
Oral semaglutide bioavailability and its variability between people — a second dataset Replied, post #27 · Compounds › Oral incretins · 26 Dec 2024 · 0 likes PIONEER programme is phase 3 for oral semaglutide. The trials cover multiple indications and durations. Reading them requires attention to which trial is which because…
A page that has drifted out of date and needs a maintainer Replied, post #36 · Documentation › Wiki requests · 5 Dec 2024 · 11 likes Request a new maintained page: if a question recurs, has a good marked solution, and contains a worked example, it is a candidate for promotion to a maintained…
Injection-site reactions: describing them precisely enough to be useful Replied, post #12 · Practice › Side effects · 19 Nov 2024 · 22 likes Injection-site reactions is well covered in the tag pages, and the older discussions are better than the recent ones because they were argued out properly. Worth twenty…
US compounding rules and how they changed Replied, post #45 · Regional › North America · 28 Oct 2024 · 0 likes Post #41 and I disagree about the size of the effect, not about the direction. Shortage status determines what compounding is permitted in some jurisdictions, which is…
Second pass at: A field-by-field walk through a certificate of analysis Replied, post #41 · Analytics › COA interpretation · 30 Aug 2024 · 31 likes Post #39 and I disagree about the size of the effect, not about the direction. Two people in this thread mean different things by field-by-field walk through a…
Why a preprint's supplementary material is often the best part Replied, post #2 · Evidence › Preprints · 23 Aug 2024 · 0 likes Peer review catches some things reliably — missing methods, unsupported conclusions, statistical mistakes of the obvious kind — and misses others routinely. Knowing…
Guidelines revision: what changed and why Replied, post #131 · Meta › Announcements · 29 Jul 2024 · 18 likes Two sentences on guidelines revision and then I will stop, because the rest is speculation and the thread is better without mine. What is documented is narrow. What is…
Coming back to: Pricing far outside the range, in either direction Replied, post #16 · Sourcing › Red flags · 28 Jul 2024 · 2 likes Pricing far outside the range sits at the boundary between what this community can usefully discuss and what it cannot, and I think it falls on the discussable side,…
Where the four-week escalation interval comes from, and what it is not Replied, post #58 · Practice › Dosing & titration · 24 Jul 2024 · 13 likes Concentration and dose get conflated constantly in this subcategory. Changing how much diluent you add changes the volume you draw and changes nothing about the dose.
Journal club: FLOW and the renal composite, component by component Replied, post #47 · Evidence › Journal club · 13 Jul 2024 · 17 likes Taking post #45 at face value and following it one step further. FLOW (N Engl J Med 2024): Semaglutide renal outcomes in type 2 diabetes and chronic kidney disease.…
Assessing a warm arrival: the decision process — one year on Replied, post #9 · Sourcing › Logistics · 28 May 2024 · 11 likes Import restrictions by jurisdiction: what is legal to import for personal use varies enormously by country. Some jurisdictions are quite permissive; others are not.…