i.rasmussen

TL2 Moderator · 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 This follows post #92 rather than contradicting it. Purity and content are different measurements: purity tells you what proportion of the detected material is the…
Journal club: what we got wrong in an earlier session Replied, post #115 · Evidence › Journal club · 24 Jul 2026 · 0 likes post #114 answers the question as asked. The question underneath it is different. For anyone arriving from a search: the marked solution above is the direct answer, and…
Revisiting: Protein density versus volume when you cannot eat much Replied, post #87 · Nutrition & Training › Protein & intake · 21 Jul 2026 · 12 likes Eating anything at all: on substantial appetite suppression, eating enough total calories to maintain lean mass is the priority. Protein comes second to total intake.
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. Dose hold versus tapering: if a temporary shortage forces a gap, holding your dose and…
[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #59 · Practice › Interactions · 18 Jul 2026 · 2 likes Metformin: commonly co-administered and relevant to gastrointestinal tolerability. Gastrointestinal side effects can overlap and additive. Taking them separately or…
Seven-day rolling means and why weekly readings mislead Replied, post #49 · Outcomes › Progress reports · 17 Jul 2026 · 0 likes Coming back to post #47, because the follow-up matters more than the original answer. Longitudinal report with the method stated: same scale, same time of day, same…
Documenting a supplier's response to a discrepancy Replied, post #25 · Sourcing › Vendor reports · 28 Jun 2026 · 4 likes Blind submission is worth the effort: have someone else relabel the sample so neither you nor the laboratory knows which supplier it came from until the result is back.…
Historical amylin analogues and what happened to them Replied, post #22 · Compounds › Cagrilintide & amylin analogues · 22 Jun 2026 · 0 likes Amylin signalling is distinct from GLP-1 signalling. Amylin slows gastric emptying and promotes satiety through a different receptor and different neural pathways. The…
Prescription portability between countries Replied, post #65 · Access › International · 15 Jun 2026 · 28 likes Coming back to post #63, because the follow-up matters more than the original answer. Currency and exchange rates: paying in different currencies has different costs…
Coming back to: Reconciling a supplier certificate with an independent result Replied, post #12 · Sourcing › Vendor reports · 8 Jun 2026 · 0 likes Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the other mass is water, counter-ion, and excipient. Purity and content are…
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #35 · Analytics › Home & field testing · 31 May 2026 · 6 likes I read post #33 twice before replying, because I had assumed the opposite. What you can use home tests for: confirmation that a solution contains peptide (as opposed to…
Reading a trial's population section before its results Replied, post #44 · Evidence › Trials · 22 May 2026 · 5 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Reflectance and photometric devices: precision in practice — a second dataset Replied, post #32 · Analytics › Home & field testing · 20 May 2026 · 16 likes Worth separating two things that post #28 runs together. What physical quantity does the device measure? A colorimetric or lateral-flow method typically responds to a…
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 Performance: if pages are slow to load, timeouts occur, or the site is unresponsive, that is worth reporting with details (when, which pages, how slow).
Batch numbers that do not match the vial label Replied, post #9 · Sourcing › Red flags · 25 Apr 2026 · 3 likes I read post #7 twice before replying, because I had assumed the opposite. Unresponsiveness: a supplier that does not reply to reasonable requests for documentation or…
Moderation log format change Replied, post #42 · Meta › Announcements · 6 Apr 2026 · 30 likes Questions welcomed: if an announcement is unclear, asking for clarification is welcome. Staff will explain their reasoning.
Journal club: is percentage weight change the right endpoint? Replied, post #25 · Evidence › Journal club · 30 Mar 2026 · 9 likes Worth separating two things that post #21 runs together. SELECT (N Engl J Med 2023): Semaglutide cardiovascular outcomes without diabetes. The first outcome trial in…
CJC-1295 with and without DAC: what the modification does Replied, post #16 · Compounds › Secretagogues & GH axis · 19 Mar 2026 · 31 likes CJC-1295 with and without DAC: the version with a drug affinity complex binds albumin covalently and persists for days. The version without it does not persist.…
Ultrasound and skinfolds: operator dependence in practice — what changed since Replied, post #19 · Outcomes › Body composition · 25 Feb 2026 · 14 likes Ultrasound: thickness of subcutaneous fat at specific sites. Less standardised than DXA and operator-dependent. Useful as a supplementary measure but not as a primary…
Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #126 · Practice › Dosing & titration · 21 Feb 2026 · 8 likes The arithmetic of an intermediate dose: if the label says 1.0 mg and 2.0 mg, a dose strictly between them is off-label by definition. Some people compute it anyway. The…
Second pass at: What "verified" means on our vendor pages, stated narrowly Replied, post #67 · Sourcing › Vendor reports · 8 Feb 2026 · 2 likes On post #63 — agreed on the reasoning, with one qualification. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly…
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 post #24 answers the question as asked. The question underneath it is different. Sample matrix effects: if a sample is dissolved in a complex matrix, other compounds in…
Second pass at: Robustness: the parameters worth deliberately varying Replied, post #43 · Analytics › Method validation · 25 Jan 2026 · 5 likes post #42 is right about the mechanism and I think understates the practical bit. Forced degradation studies: deliberately stress the material with acid, base, oxidant,…
The most common factual error about semaglutide on the internet — what changed since Replied, post #13 · Compounds › Semaglutide · 24 Jan 2026 · 1 like For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Reading an interaction checker output critically Replied, post #62 · Practice › Interactions · 9 Dec 2025 · 0 likes Metformin: commonly co-administered and relevant to gastrointestinal tolerability. Gastrointestinal side effects can overlap and additive. Taking them separately or…
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 Picking up post #34: that is the part I would want checked first. Lab result questions: state the result, the reference interval, and what else is on the same panel. A…
Airline travel with a temperature-sensitive injectable Replied, post #15 · Devices › Cold chain · 16 Nov 2025 · 32 likes Freeze-thaw: some peptides tolerate freezing; others do not. Check your compound's labelling. Generally, repeated freeze-thaw is worse than single freeze-thaw.
Reading SURMOUNT-1 without the press release Replied, post #61 · Compounds › Tirzepatide · 10 Nov 2025 · 2 likes This follows post #58 rather than contradicting it. SURMOUNT-OSA is notable because it used an objective physiological endpoint, the apnoea-hypopnoea index, rather than…
Tracking that stops updating and then resumes Replied, post #43 · Sourcing › Logistics · 6 Nov 2025 · 7 likes Reshipment after seizure: if a parcel is seized, some suppliers will reship; others will not. That is a supplier choice and should be understood before ordering in a…
Insomnia at a dose step: reported experiences Replied, post #22 · Wellbeing › Sleep · 4 Nov 2025 · 0 likes Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did and when. The single most useful thing in your own…
[2026 update] Splitting an overlong document into two Replied, post #44 · Documentation › Wiki requests · 25 Oct 2025 · 0 likes Authority and authorship: if you think a maintained page needs input from someone with specific expertise (a clinician, an analytical chemist) suggest who might…
New subcategory: rationale and scope Replied, post #106 · Meta › Announcements · 24 Oct 2025 · 0 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Payment mechanics and the recovery options that do not exist Replied, post #47 · Sourcing › Payments · 20 Oct 2025 · 8 likes Worth separating two things that post #43 runs together. Escrow services: some third-party services hold payment until the buyer confirms receipt. They add cost but…
Tirzepatide and nausea: is the profile genuinely different or just differently reported? Replied, post #11 · Compounds › Tirzepatide · 9 Oct 2025 · 5 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Availability by country, dated, with primary sources Replied, post #11 · Access › International · 5 Oct 2025 · 15 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Substitution between formats during a shortage Replied, post #69 · Access › Shortages · 5 Oct 2025 · 0 likes post #68 is right about the mechanism and I think understates the practical bit. Thank you for the correction. I have edited my earlier post with a note rather than…
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 Do not build anything on a preprint that you would mind rebuilding: if the preprint later changes substantially in revision or shows different results when published,…
Payment method and the leverage it gives you, ranked Replied, post #57 · Sourcing › Payments · 22 Sep 2025 · 3 likes Worth separating two things that post #53 runs together. Refund policy before ordering: ask what the policy is if you receive damaged material or if the order is…
Follow-up: Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #4 · Practice › Dosing & titration · 19 Sep 2025 · 0 likes Worth separating two things that the opening post runs together. The arithmetic of an intermediate dose: if the label says 1.0 mg and 2.0 mg, a dose strictly between…
Aggregated purity results across four services, with caveats — a second dataset Replied, post #70 · Data & Tools › Datasets · 9 Sep 2025 · 0 likes Privacy: if contributing data, only share data you are comfortable making permanent and public. Once posted, data is persistent.
[2026 update] A certificate with no method stated: what can you conclude? Replied, post #2 · Analytics › COA interpretation · 7 Sep 2025 · 16 likes On the opening post — agreed on the reasoning, with one qualification. Reading old certificates: if a certificate is dated years ago, the lot it describes might be old.…
Confounding by indication, explained with a concrete example Replied, post #11 · Evidence › Study critique · 1 Sep 2025 · 4 likes On post #7 — agreed on the reasoning, with one qualification. When you change your mind: if a reply convinces you that your criticism was not well-founded, say so…
Gauge and length selection for subcutaneous injection Replied, post #24 · Devices › Syringes & needles · 27 Aug 2025 · 6 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
[2026 update] What we do not know about retatrutide, listed explicitly Replied, post #64 · Compounds › Retatrutide · 26 Aug 2025 · 1 like TRIUMPH is phase 3 and it is ongoing. No phase 3 results exist. Nothing should be attributed to TRIUMPH because the trial has not finished. When it does, this page will…
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 Temperature excursions: if a vial sat at room temperature for a time, the question is whether the excursion was long enough to cause damage. Hours at room temperature…
A ten-fold dose error caught before injection — one year on Replied, post #155 · Devices › Syringes & needles · 5 Aug 2025 · 7 likes post #154 answers the question as asked. The question underneath it is different. Insulin syringe graduations: U-100 syringes are marked in units where 100 units = 1…
Second pass at: Why this subcategory is stricter about sourcing than most Replied, post #32 · Compounds › Secretagogues & GH axis · 3 Aug 2025 · 29 likes Evidence quality in the secretagogue literature is honestly weaker than in the incretin literature. Large randomised controlled trials are rare. Most evidence is…
How to research a compound with no human data without deceiving yourself Replied, post #44 · Compounds › Other compounds · 1 Aug 2025 · 14 likes Research-use-only status is a legal classification, not a safety classification. It means the compound is sold for laboratory use and not for human consumption or…
Coming back to: Resolution and tailing factor: real acceptance criteria Replied, post #19 · Analytics › HPLC & UHPLC · 27 Jul 2025 · 6 likes Coming back to post #17, because the follow-up matters more than the original answer. Gradient slope is the single biggest driver of apparent purity differences. A…
Managing an unplanned gap in supply — what changed since Replied, post #20 · Access › Shortages · 19 Jul 2025 · 4 likes International supply chains: a shortage in one country does not mean shortage in another. That is why ordering from multiple suppliers before a shortage gets bad is…
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. Nausea profile of amylin analogues: the historical agent pramlintide required…
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 How the published trials escalated: they used specific step sizes and intervals. The STEP programme used a particular cadence; the SURPASS and SURMOUNT programmes used…
[2026 update] Mood changes: monitoring, and when to involve a professional Replied, post #12 · Wellbeing › Mental health · 20 Jun 2025 · 11 likes Picking up post #9: that is the part I would want checked first. Identity and self-image: for some people, weight and body size are central to identity. Large change to…
Pre-registering a personal experiment, seriously Replied, post #105 · Research Methods › N-of-1 designs · 3 Jun 2025 · 10 likes Picking up post #102: that is the part I would want checked first. Statistical analysis of n-of-1 data: comparing before versus after with a t-test or similar is one…
Pre-registering a personal experiment, seriously Replied, post #82 · Research Methods › N-of-1 designs · 1 Jun 2025 · 6 likes Objective versus subjective measures: subjective measures (how you feel) are vulnerable to bias. Objective measures (weight, strength on a specific exercise) are less…
Pre-registering a personal experiment, seriously Replied, post #63 · Research Methods › N-of-1 designs · 31 May 2025 · 29 likes Designing a personal experiment that could actually change your mind: that is the standard for an n-of-1 design. An experiment designed so that any result confirms what…
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.
Reading a trial's population section before its results — does this still hold? Replied, post #4 · Evidence › Trials · 11 Apr 2025 · 0 likes Surrogate endpoints: an endpoint that is not the outcome that matters but is measured as a stand-in. HbA1c is a surrogate for long-term glucose control and the…
Checking someone else's arithmetic: a worked example thread Replied, post #36 · Practice › Reconstitution · 7 Apr 2025 · 21 likes I read post #34 twice before replying, because I had assumed the opposite. Why "add 2 mL" is not an instruction: the powder in the vial takes up space. "Add 2 mL to a…
Requesting a page: what makes a good request Replied, post #45 · Documentation › Wiki requests · 4 Apr 2025 · 15 likes Coming back to post #43, because the follow-up matters more than the original answer. Translation suggestions: if a maintained page should exist in another language,…
A 10 mg vial reconstituted three different ways, compared — the long version Replied, post #25 · Practice › Reconstitution · 19 Mar 2025 · 0 likes Coming back to post #23, because the follow-up matters more than the original answer. Two things before anyone answers the substance. First, the context in the first…
Reading an MS report that only gives you a single number Replied, post #29 · Analytics › Mass spectrometry · 15 Mar 2025 · 3 likes Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the…
Coverage for the indication versus for the drug — a second dataset Replied, post #8 · Access › Insurance & coverage · 9 Mar 2025 · 0 likes Worth separating two things that post #4 runs together. Appeals process: unemotional prose, the criterion quoted verbatim, evidence mapped to it point by point, dates,…
Journal club: SURMOUNT-1, read without the press release Replied, post #61 · Evidence › Journal club · 15 Feb 2025 · 13 likes SURPASS-2 (N Engl J Med 2021): Direct comparison of tirzepatide with semaglutide 1.0 mg. The 1.0 mg dose is not the highest available, which is the central and…
What changed in 2026, by region Replied, post #117 · Access › International · 2 Feb 2025 · 0 likes post #116 answers the question as asked. The question underneath it is different. Language barriers: if you need to communicate with a supplier, clinician, or regulator…
Protein density versus volume when you cannot eat much Replied, post #55 · Nutrition & Training › Protein & intake · 2 Feb 2025 · 16 likes Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did and when. The single most useful thing in your own…
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. Canada: Health Canada licenses compounds. Prescribing is provincial. Compounds are prescription-only.…
Why our vendor pages link the storefront and mark it sponsored Replied, post #21 · Sourcing › Vendor reports · 23 Jan 2025 · 13 likes Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the other mass is water, counter-ion, and excipient. Purity and content are…
Coming back to: When to suspect the method rather than the sample Replied, post #118 · Analytics › Method validation · 23 Dec 2024 · 0 likes Stability-indicating method: one that can separate a compound from its degradation products. Critical for assay methods that claim to measure actual degradation (as…
What changed in 2026, by region Replied, post #35 · Access › International · 22 Dec 2024 · 14 likes Travel with medication: carrying a compound across borders is complicated by legal status. Documenting that it is prescribed and carrying proof reduces (but does not…
Coming back to: When to suspect the method rather than the sample Replied, post #38 · Analytics › Method validation · 7 Dec 2024 · 0 likes On post #34 — agreed on the reasoning, with one qualification. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly…
Injection-site reactions: describing them precisely enough to be useful Replied, post #23 · Practice › Side effects · 24 Nov 2024 · 0 likes Coming back to post #21, because the follow-up matters more than the original answer. Having read the exchange above, I think I was wrong earlier in this topic and I…
Time to steady state after a dose increase Replied, post #124 · Pharmacology › Pharmacokinetics · 5 Nov 2024 · 14 likes This follows post #121 rather than contradicting it. SNAC (the oral bioavailability enhancer): sodium N-(8-[2-hydroxybenzoyl]amino) caprylate transiently raises gastric…
Food noise reducing and the disorientation that can follow Replied, post #22 · Wellbeing › Mental health · 15 Oct 2024 · 11 likes Social and relationship impacts: weight change affects how others perceive and interact with a person. Those impacts are real and can be psychologically significant.
A page that has drifted out of date and needs a maintainer Replied, post #18 · Documentation › Wiki requests · 13 Oct 2024 · 21 likes Flag a page that has drifted: if you notice a maintained page has information that is outdated (dates that have passed, regulatory changes, new evidence) post a flag so…
Journal club: SURMOUNT-1, read without the press release Replied, post #2 · Evidence › Journal club · 10 Oct 2024 · 32 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…
Irish differences from the UK position Replied, post #13 · Regional › UK & Ireland · 28 Sep 2024 · 8 likes Regional variation in NHS: access varies dramatically by region depending on local commissioning decisions and specialist service availability. Postcode determines…
Correlation in a self-tracked dataset: what it can support Replied, post #103 · Research Methods › Statistics · 24 Aug 2024 · 1 like Power and sample size: a study might be too small to detect a real effect (low power). Sample size calculations help determine how many participants are needed to…