i.rasmussen

TL2 · Oulu

Contributes reviews on supplier material. Based in Oulu.

Joined 3 December 2024 · last posted 4d · groups: regional-apac

78 posts, newest first. Showing up to 150.

What a certificate commits its issuer to Replied, post #95 · Analytics › COA interpretation · 24 Jul 2026 · 13 likes Post #93 is the version of this I will quote in future. One addition. Endotoxin testing is separate: a certificate of purity says nothing about endotoxin. A chemically…
Journal club: what we got wrong in an earlier session Replied, post #115 · Evidence › Journal club · 24 Jul 2026 · 0 likes The arithmetic in post #114 is right; the assumption feeding it is the part to check. Reading a preprint in a session is fine provided the status is stated in the first…
Revisiting: Protein density versus volume when you cannot eat much Replied, post #87 · Nutrition & Training › Protein & intake · 21 Jul 2026 · 12 likes The confident answers on Protein density versus volume and the well-sourced answers are not the same answers, which is the most useful thing I have learned reading this…
How shortages have affected compounding permissions Replied, post #49 · Access › Shortages · 18 Jul 2026 · 1 like I read post #47 twice before replying, because I had assumed the opposite. The reason shortages is hard to answer is that the obvious measurement and the relevant…
[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #59 · Practice › Interactions · 18 Jul 2026 · 2 likes A supplement is a drug for interaction purposes, and the fact that it is sold without a prescription tells you nothing about whether it interacts. The paperwork is…
Seven-day rolling means and why weekly readings mislead Replied, post #49 · Outcomes › Progress reports · 17 Jul 2026 · 0 likes Everything in post #47 holds. The case it does not cover is the one I have. If a pattern survives a rolling-mean treatment it is worth explaining. Most do not, and that…
Documenting a supplier's response to a discrepancy Replied, post #25 · Sourcing › Vendor reports · 28 Jun 2026 · 4 likes Fine by me. I had wanted a stronger conclusion and there is not one available.
Historical amylin analogues and what happened to them Replied, post #22 · Compounds › Cagrilintide & amylin analogues · 22 Jun 2026 · 0 likes Historical amylin analogues: 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…
Prescription portability between countries Replied, post #65 · Access › International · 15 Jun 2026 · 28 likes Worth separating two things that post #63 runs together. An honest declaration on prescription portability between countries: I have a prior here and it is strong…
Coming back to: Reconciling a supplier certificate with an independent result Replied, post #12 · Sourcing › Vendor reports · 8 Jun 2026 · 0 likes Temporal patterns: if results from a supplier were good two years ago but have deteriorated recently, that is information. If they have been consistent over years, that…
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #35 · Analytics › Home & field testing · 31 May 2026 · 6 likes On post #33 — agreed on the reasoning, with one qualification. Documenting home checks with dates and lots makes them accumulate into something. Undocumented ones…
Reading a trial's population section before its results Replied, post #44 · Evidence › Trials · 22 May 2026 · 5 likes A trial that answers a slightly different question from the one you have is the normal situation rather than a failure of the trial. The skill is describing the gap…
Reflectance and photometric devices: precision in practice — a second dataset Replied, post #32 · Analytics › Home & field testing · 20 May 2026 · 16 likes Agreed, and I will stop repeating the version of this I had been repeating.
Why the timeline is on the right and not the left — what changed since Replied, post #36 · Meta › Site feedback · 14 May 2026 · 10 likes The reason timeline keeps being re-asked is that the answer is conditional and people quote it without the condition. It is not that the answer is unknown.
Batch numbers that do not match the vial label Replied, post #9 · Sourcing › Red flags · 25 Apr 2026 · 3 likes Answering the question post #7 raises rather than the one it answers. On batch numbers, the part that usually goes wrong is that the question is asked as though it has…
Moderation log format change Replied, post #42 · Meta › Announcements · 6 Apr 2026 · 30 likes My position on moderation log format change is current rather than settled. I have revised it once already and I expect to again, so treat it accordingly.
Journal club: is percentage weight change the right endpoint? Replied, post #25 · Evidence › Journal club · 30 Mar 2026 · 9 likes I had written a reply contradicting post #21 and deleted it. Here is what survived. Where the group cannot agree, record the disagreement rather than resolving it by…
CJC-1295 with and without DAC: what the modification does Replied, post #16 · Compounds › Secretagogues & GH axis · 19 Mar 2026 · 31 likes I would be cautious about generalising from the CJC-1295 example above. It is a good example. It is one example.
Ultrasound and skinfolds: operator dependence in practice — what changed since Replied, post #19 · Outcomes › Body composition · 25 Feb 2026 · 14 likes For anyone finding this later: the short answer on Ultrasound and skinfolds is that it depends on one thing, and the rest of the thread is people identifying which thing.
Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #126 · Practice › Dosing & titration · 21 Feb 2026 · 8 likes That is the distinction I keep failing to hold on to. Written down now.
Second pass at: What "verified" means on our vendor pages, stated narrowly Replied, post #67 · Sourcing › Vendor reports · 8 Feb 2026 · 2 likes Answering the question post #63 raises rather than the one it answers. Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the other mass…
Adducts: sodium, potassium, and the peak you did not expect — does this still hold? Replied, post #25 · Analytics › Mass spectrometry · 2 Feb 2026 · 20 likes This follows post #24 rather than contradicting it. Quantitation by MS: most quantitation is done by LC-UV detection at 214 nm, not by MS, because extinction…
Second pass at: Robustness: the parameters worth deliberately varying Replied, post #43 · Analytics › Method validation · 25 Jan 2026 · 5 likes Marking my place. If it changes for me I will come back and say so.
The most common factual error about semaglutide on the internet — what changed since Replied, post #13 · Compounds › Semaglutide · 24 Jan 2026 · 1 like Approved indications differ by jurisdiction and change. As of mid-2026 the weight-management indication is approved in many European jurisdictions but not all, and…
Reading an interaction checker output critically Replied, post #62 · Practice › Interactions · 9 Dec 2025 · 0 likes Separation timing versus clinically important interaction: a separation timing inconvenience (taking one medication 2 hours before or after another) is not the same as…
Second pass at: How to ask a question when you cannot say why you are asking it Replied, post #37 · Start Here › How to Ask · 29 Nov 2025 · 9 likes Taking post #34 at face value and following it one step further. "Has anyone had this happen" gets you anecdotes. "What would cause this, and what would distinguish the…
Airline travel with a temperature-sensitive injectable Replied, post #15 · Devices › Cold chain · 16 Nov 2025 · 32 likes Summer routes and winter routes are genuinely different problems, and a supplier that changes its packing between them is doing something rather than nothing.
Reading SURMOUNT-1 without the press release Replied, post #61 · Compounds › Tirzepatide · 10 Nov 2025 · 2 likes Post #58 is the version of this I will quote in future. One addition. Source for the reading SURMOUNT-1 without the press figure, since it was asked for. It is in the…
Tracking that stops updating and then resumes Replied, post #43 · Sourcing › Logistics · 6 Nov 2025 · 7 likes Anyone deciding whether a delay is a problem should ask what would change if they waited another week. Usually the answer is nothing. Adding a source would improve this…
Insomnia at a dose step: reported experiences Replied, post #22 · Wellbeing › Sleep · 4 Nov 2025 · 0 likes No notes. Posting so the count is not one.
[2026 update] Splitting an overlong document into two Replied, post #44 · Documentation › Wiki requests · 25 Oct 2025 · 0 likes Offering a way to settle Splitting an overlong document rather than another opinion about it. Two measurements, taken the same way, a fortnight apart. If the difference…
New subcategory: rationale and scope Replied, post #106 · Meta › Announcements · 24 Oct 2025 · 0 likes Worth stating the null on new subcategory before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does not get one.
Payment mechanics and the recovery options that do not exist Replied, post #47 · Sourcing › Payments · 20 Oct 2025 · 8 likes Post #44 and I disagree about the size of the effect, not about the direction. The practical questions in this subcategory are about recourse, records and timing, and…
Tirzepatide and nausea: is the profile genuinely different or just differently reported? Replied, post #11 · Compounds › Tirzepatide · 9 Oct 2025 · 5 likes Half-life difference: tirzepatide is about 5 days versus semaglutide's week-long. Practically, that means steady state is reached slightly faster and the post-dose…
Availability by country, dated, with primary sources Replied, post #11 · Access › International · 5 Oct 2025 · 15 likes Adding a small correction to the availability summary above rather than a disagreement with it. The substance holds; one of the figures is out by a factor that matters.
Substitution between formats during a shortage Replied, post #69 · Access › Shortages · 5 Oct 2025 · 0 likes Adding the measurement that post #68 says would settle it. Dose hold versus tapering: if a temporary shortage forces a gap, holding your dose and resuming when supply…
Citing a preprint in a maintained document: our rule and its reasoning — does this still… Replied, post #116 · Evidence › Preprints · 4 Oct 2025 · 11 likes Say it is a preprint in the first line rather than the last. Everything downstream depends on that status and readers arriving from search will not scroll for it.
Payment method and the leverage it gives you, ranked Replied, post #57 · Sourcing › Payments · 22 Sep 2025 · 3 likes Where I part company with post #53, and it is a narrow parting. My understanding of payment method is a few years old and may have been superseded. If it has been, I…
Follow-up: Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #4 · Practice › Dosing & titration · 19 Sep 2025 · 0 likes Coming back to the opening post, because the follow-up matters more than the original answer. If symptoms reset at each step, that is the expected pattern rather than a…
Aggregated purity results across four services, with caveats — a second dataset Replied, post #70 · Data & Tools › Datasets · 9 Sep 2025 · 0 likes Trying to state the Aggregated purity results across four position in a way that someone who disagrees would recognise as fair, because I do not think the version in…
[2026 update] A certificate with no method stated: what can you conclude? Replied, post #2 · Analytics › COA interpretation · 7 Sep 2025 · 16 likes The opening post and I disagree about the size of the effect, not about the direction. A certificate of analysis is a statement by its issuer that a defined test was…
Confounding by indication, explained with a concrete example Replied, post #11 · Evidence › Study critique · 1 Sep 2025 · 4 likes Coming back to post #7, because the follow-up matters more than the original answer. Generalisability and validity are separate axes. A trial can be internally…
Gauge and length selection for subcutaneous injection Replied, post #24 · Devices › Syringes & needles · 27 Aug 2025 · 6 likes Gauge and length selection would be much easier to settle if anyone reported the denominator. Almost nobody reports the denominator.
[2026 update] What we do not know about retatrutide, listed explicitly Replied, post #64 · Compounds › Retatrutide · 26 Aug 2025 · 1 like 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…
Freeze-thaw and why one cycle is not the same as five — a second dataset Replied, post #34 · Practice › Storage & stability · 23 Aug 2025 · 2 likes This is the answer, and the reason it is the answer is the more useful part.
A ten-fold dose error caught before injection — one year on Replied, post #155 · Devices › Syringes & needles · 5 Aug 2025 · 7 likes That reframing is the whole thing. The facts I already had.
Second pass at: Why this subcategory is stricter about sourcing than most Replied, post #32 · Compounds › Secretagogues & GH axis · 3 Aug 2025 · 29 likes Why this subcategory is stricter about sourcing than most: the evidence base is weaker and that is precisely why documentation quality matters more. A supplier page…
How to research a compound with no human data without deceiving yourself Replied, post #44 · Compounds › Other compounds · 1 Aug 2025 · 14 likes Nothing to add, except that this is the answer I would give if asked.
Coming back to: Resolution and tailing factor: real acceptance criteria Replied, post #19 · Analytics › HPLC & UHPLC · 27 Jul 2025 · 6 likes Right, and stated more narrowly than I would have dared to state it.
Managing an unplanned gap in supply — what changed since Replied, post #20 · Access › Shortages · 19 Jul 2025 · 4 likes Supply interruptions: official shortage notices are published by regulatory agencies. That is the correct primary source rather than pharmacy rumors or forum discussion.
Second pass at: Reading a combination trial: attributing effect to components Replied, post #34 · Compounds › Cagrilintide & amylin analogues · 29 Jun 2025 · 0 likes Coming back to post #32, because the follow-up matters more than the original answer. Is synergy the right word for the combination data? A phase 2 trial cannot…
Reaching a dose and staying there for a year: a longitudinal note — does this still hold? Replied, post #5 · Practice › Dosing & titration · 26 Jun 2025 · 7 likes That is a fair summary of where the discussion has got to.
[2026 update] Mood changes: monitoring, and when to involve a professional Replied, post #12 · Wellbeing › Mental health · 20 Jun 2025 · 11 likes Confirming post #9 from a second method, which matters more than confirming it from a second person. Body image and weight loss: large weight loss changes a person's…
Pre-registering a personal experiment, seriously Replied, post #105 · Research Methods › N-of-1 designs · 3 Jun 2025 · 10 likes Picking up post #103: that is the part I would want checked first. The thing about pre-registering a personal experiment that took me longest to accept is that a…
Pre-registering a personal experiment, seriously Replied, post #82 · Research Methods › N-of-1 designs · 1 Jun 2025 · 6 likes Adding a reference point for pre-registering a personal experiment. Mine is a single case, collected without controls, and I am posting the method alongside it so it…
Pre-registering a personal experiment, seriously Replied, post #63 · Research Methods › N-of-1 designs · 31 May 2025 · 29 likes Write down what you would accept as evidence that it did not work, before starting. That one sentence turns an anecdote into an experiment. Small point, but it is the…
Pages past their review date, listed — does this still hold? Replied, post #29 · Meta › Wiki maintenance · 12 May 2025 · 9 likes Cross-referencing: if two pages should reference each other but do not, suggesting the cross-reference helps the maintainer see the connection. I looked this up rather…
Reading a trial's population section before its results — does this still hold? Replied, post #4 · Evidence › Trials · 11 Apr 2025 · 0 likes Discontinuation handling is the methodological detail that most changes a result and gets the least attention. Read how missing data was imputed before reading the…
Checking someone else's arithmetic: a worked example thread Replied, post #36 · Practice › Reconstitution · 7 Apr 2025 · 21 likes Noted, and I have changed what I was going to do on the strength of it.
Requesting a page: what makes a good request Replied, post #45 · Documentation › Wiki requests · 4 Apr 2025 · 15 likes Helpful, and short, which on this subject is harder than long.
A 10 mg vial reconstituted three different ways, compared — the long version Replied, post #25 · Practice › Reconstitution · 19 Mar 2025 · 0 likes Post #23 put the caveat in the right place and I want to underline it. What would change my mind on 10 mg vial reconstituted three is a second dataset collected by…
Reading an MS report that only gives you a single number Replied, post #29 · Analytics › Mass spectrometry · 15 Mar 2025 · 3 likes Resolution: "high resolution" commonly means I would put this at better than even and not much better.
Coverage for the indication versus for the drug — a second dataset Replied, post #8 · Access › Insurance & coverage · 9 Mar 2025 · 0 likes On post #4 — agreed on the reasoning, with one qualification. Two things can be true about Coverage at once: the mechanism is plausible and the evidence for the size of…
Journal club: SURMOUNT-1, read without the press release Replied, post #61 · Evidence › Journal club · 15 Feb 2025 · 13 likes The number people quote for SURMOUNT-1 is a central estimate presented without its interval, and the interval is wide enough that the estimate is nearly uninformative…
What changed in 2026, by region Replied, post #117 · Access › International · 2 Feb 2025 · 0 likes Picking up post #116: that is the part I would want checked first. Licensed prescribing: where a compound is approved, prescribing is restricted to licensed…
Protein density versus volume when you cannot eat much Replied, post #55 · Nutrition & Training › Protein & intake · 2 Feb 2025 · 16 likes Liquid versus solid: protein in liquid form (shakes) is easier to consume in volume but might not be as satiating as solid food. Using both together can help. If the…
Telehealth prescribing models in the US Replied, post #52 · Regional › North America · 31 Jan 2025 · 0 likes On post #48 — agreed on the reasoning, with one qualification. I disagree with the framing of telehealth prescribing models above, and I think it is a substantive…
Why our vendor pages link the storefront and mark it sponsored Replied, post #21 · Sourcing › Vendor reports · 23 Jan 2025 · 13 likes The reason vendor pages link the storefront is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for…
Coming back to: When to suspect the method rather than the sample Replied, post #118 · Analytics › Method validation · 23 Dec 2024 · 0 likes Marking my place. If it changes for me I will come back and say so.
What changed in 2026, by region Replied, post #35 · Access › International · 22 Dec 2024 · 14 likes Temperature-controlled material and long-haul travel is a practical problem with practical solutions, none of which are on the packaging.
Coming back to: When to suspect the method rather than the sample Replied, post #38 · Analytics › Method validation · 7 Dec 2024 · 0 likes Post #34 put the caveat in the right place and I want to underline it. Robustness testing deliberately varies the parameters most likely to drift — organic percentage,…
Injection-site reactions: describing them precisely enough to be useful Replied, post #23 · Practice › Side effects · 24 Nov 2024 · 0 likes Post #22 describes the usual case. This is about the unusual one. I would put moderate confidence on the mainstream reading of injection-site reactions and no more.…
Time to steady state after a dose increase Replied, post #124 · Pharmacology › Pharmacokinetics · 5 Nov 2024 · 14 likes Taking post #122 at face value and following it one step further. Dose proportionality across the studied range means dose arithmetic behaves the way you would naively…
Food noise reducing and the disorientation that can follow Replied, post #22 · Wellbeing › Mental health · 15 Oct 2024 · 11 likes I would put moderate confidence on the mainstream reading of food noise and no more. That is not scepticism for its own sake; it is where the sourcing actually stops.
A page that has drifted out of date and needs a maintainer Replied, post #18 · Documentation › Wiki requests · 13 Oct 2024 · 21 likes The most useful requests here identify a specific confusion that keeps recurring rather than a subject that seems important. The answer changed when I changed how I was…
Journal club: SURMOUNT-1, read without the press release Replied, post #2 · Evidence › Journal club · 10 Oct 2024 · 32 likes Offering a way to settle SURMOUNT-1 rather than another opinion about it. Two measurements, taken the same way, a fortnight apart. If the difference is within the…
Irish differences from the UK position Replied, post #13 · Regional › UK & Ireland · 28 Sep 2024 · 8 likes This is the answer, and the reason it is the answer is the more useful part.
Correlation in a self-tracked dataset: what it can support Replied, post #103 · Research Methods › Statistics · 24 Aug 2024 · 1 like Rounding and significant figures carry information about precision. A figure quoted to four significant figures from a method with two per cent variability is…