c.rasmussen

TL2 · Gdańsk

Contributes reviews on supplier material. Based in Gdańsk.

Joined 5 June 2025 · last posted 16h

84 posts, newest first. Showing up to 150.

Seven-day rolling means and why weekly readings mislead Replied, post #124 · Outcomes › Progress reports · 27 Jul 2026 · 0 likes If someone has run seven-day rolling properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet.
Follow-up: Sleep quality changes during weight loss Replied, post #79 · Wellbeing › Sleep · 25 Jul 2026 · 12 likes Sleep hygiene: basics (cool dark room, consistent sleep time, no screens before bed) matter more during energy deficit because stress and sleep need are higher.
Forced degradation studies: designing one that is informative Replied, post #106 · Analytics › Method validation · 25 Jul 2026 · 11 likes Taking post #105 at face value and following it one step further. Where I have landed on forced degradation studies, having got it wrong once in public: the direction…
[2026 update] Waist circumference technique and its repeatability Replied, post #27 · Outcomes › Progress reports · 23 Jul 2026 · 0 likes Picking up post #26: that is the part I would want checked first. The best progress reports here read as records rather than as arguments, and that difference is…
Revisiting: What pooling buys you and what it destroys Replied, post #101 · Evidence › Meta-analyses · 22 Jul 2026 · 1 like Distinguishing three things in the pooling buys discussion that keep getting used interchangeably: the observation, the proposed mechanism, and the recommendation that…
Revisiting: Protein density versus volume when you cannot eat much Replied, post #66 · Nutrition & Training › Protein & intake · 15 Jul 2026 · 20 likes Meeting protein targets on suppressed appetite: this is where the practical difficulty lies. Eating more protein when appetite is suppressed is genuinely hard.…
[2026 update] Documenting an adverse event properly Replied, post #7 · Safety › Adverse events · 12 Jul 2026 · 11 likes I had read the opposite somewhere and cannot now find where, which tells me something.
What consumer-accessible tests can and cannot determine — a second dataset Replied, post #53 · Analytics › Home & field testing · 4 Jul 2026 · 0 likes Molecular tests: DNA or RNA tests are not applicable to peptides, which do not contain nucleic acids. Peptide-specific tests rely on protein recognition, not…
Secretagogues and glucose tolerance: the mechanistic concern Replied, post #61 · Compounds › Secretagogues & GH axis · 4 Jul 2026 · 5 likes Timing arguments in this family generally rest on the assumption that endogenous release is suppressed by circulating glucose and insulin. That is well supported; the…
Vomiting: when it is expected and when it is a reason to stop — one year on Replied, post #16 · Practice › Side effects · 21 Jun 2026 · 5 likes Post #12 describes the usual case. This is about the unusual one. The published rates come from populations that were titrated on a defined schedule with clinical…
Carryover and the ghost peak from last week's standard — what changed since Replied, post #49 · Analytics › HPLC & UHPLC · 19 Jun 2026 · 23 likes Where the Carryover discussion usually stalls is that nobody wants to say "I do not know" and everyone is willing to say "it varies". Those are the same sentence with…
A site rotation scheme that is easy enough to actually follow Replied, post #89 · Practice › Administration · 15 Jun 2026 · 7 likes Pinching a fold is useful for lean tissue and unnecessary elsewhere. The point is to keep the needle out of muscle, and whether you need to depends on the site and on…
Area percent versus weight percent: the confusion that causes most arguments Replied, post #15 · Analytics › HPLC & UHPLC · 9 Jun 2026 · 0 likes System suitability is not paperwork. If the replicate injections failed, the run did not happen — the numbers from it are uninterpretable rather than approximate. I…
Revisiting: What pooling buys you and what it destroys Replied, post #44 · Evidence › Meta-analyses · 5 Jun 2026 · 33 likes Two things can be true about pooling buys at once: the mechanism is plausible and the evidence for the size of the effect is thin. Most of the argument here is people…
Reading a syringe in poor light, and how to avoid needing to Started this topic · Devices › Syringes & needles · 25 May 2026 · 47 likes Reading a syringe in poor light, and how to avoid needing to Writing it up because I had to work it out twice and would rather nobody else did. The question about…
Tracking intake honestly when appetite is absent Replied, post #30 · Nutrition & Training › Protein & intake · 19 May 2026 · 22 likes Reporting rather than recommending, on tracking intake. What happened is above. Whether it should have is a different question and not one I am qualified to answer.
Injection volume, overload, and peak distortion Replied, post #2 · marked as the solution · Analytics › HPLC & UHPLC · 9 May 2026 · 9 likes Adding a null result on injection volume. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.
What to include when your question involves a laboratory result Replied, post #4 · Start Here › How to Ask · 6 May 2026 · 16 likes I had written a reply contradicting the opening post and deleted it. Here is what survived. Asking a follow-up: new topic or reply in the old one? If the answer depends…
Spike-and-recover accuracy for a peptide assay Replied, post #105 · Analytics › Method validation · 10 Apr 2026 · 0 likes My experience of spike-and-recover accuracy contradicts the reply above. I am posting it as a data point rather than as a refutation, because one person's experience is…
Coming back to: Training through a dose escalation week Replied, post #69 · Nutrition & Training › Resistance training · 3 Apr 2026 · 21 likes An update on my earlier Training through a dose escalation post: the pattern held for another six weeks and then stopped, which I did not predict and cannot explain.
Transporting a vial for a weekend away — a second dataset Replied, post #17 · Practice › Storage & stability · 30 Mar 2026 · 16 likes Visible particulate is a strong signal in the other direction: it is a reason to stop and ask rather than to filter and proceed. I would be interested in a…
Coming back to: Half-life, steady state, and accumulation worked through Started this topic · Pharmacology › Pharmacokinetics · 29 Mar 2026 · 0 likes On the subject in the title: Half-life, steady state, and accumulation worked through Working notes rather than a conclusion. Working through the kinetics rather than…
Injection discomfort: needle gauge, volume, temperature, technique Replied, post #43 · Practice › Administration · 27 Mar 2026 · 7 likes Angle of injection: 90 degrees into pinched tissue ensures subcutaneous placement. It is not always necessary and shallower angles can work, but 90 degrees into a small…
Introducing myself: pharmacist, sceptic, reluctant participant — one year on Replied, post #72 · Lounge › Introductions · 15 Mar 2026 · 2 likes Introductions are also a reasonable place to say what you are hoping to find, because somebody will usually know whether it exists here already. None of the above is…
Which fields on a certificate actually matter, ranked Replied, post #2 · Analytics › COA interpretation · 9 Mar 2026 · 11 likes I had written a reply contradicting the opening post and deleted it. Here is what survived. The distinction between release testing and characterisation is one…
Coming back to: Semaglutide in people without diabetes: what the evidence base looks like Replied, post #36 · Compounds › Semaglutide · 28 Feb 2026 · 2 likes Albumin binding is not a unique structural feature and nothing in the class lacks it, but the reversibility matters. Semaglutide binds albumin covalently through a…
Gastro-oesophageal reflux: improving or worsening? Replied, post #22 · Clinical › Comorbidities · 26 Feb 2026 · 0 likes Taking post #19 at face value and following it one step further. I would put moderate confidence on the mainstream reading of gastro-oesophageal reflux and no more.…
About the Bloodwork category Replied, post #5 · Clinical › Bloodwork · 25 Feb 2026 · 6 likes Repeat before acting is standard practice for an isolated abnormal result on most analytes, and it is standard for a reason. That is the version I would defend. It is…
The most common factual error about semaglutide on the internet — what changed since Replied, post #35 · Compounds › Semaglutide · 25 Feb 2026 · 15 likes Appreciated. The plain phrasing does more work here than a longer post would.
Half-life, steady state, and accumulation worked through — a second dataset Replied, post #90 · Pharmacology › Pharmacokinetics · 23 Feb 2026 · 17 likes Metabolism for peptide drugs is proteolytic rather than hepatic in the usual sense, which is why the cytochrome interaction questions that dominate small-molecule…
Pinch or no pinch, and how needle length changes the answer — the long version Replied, post #22 · Practice › Administration · 20 Feb 2026 · 21 likes Where I part company with post #18, and it is a narrow parting. Pinch or no pinch: the decision depends on needle length and on your own anatomy. A longer needle (8 mm…
Seven-day rolling means and why weekly readings mislead — one year on Replied, post #85 · Outcomes › Progress reports · 19 Feb 2026 · 11 likes Understood, and I withdraw the assumption I opened with.
Mass error in ppm: the arithmetic and the caveat Replied, post #87 · Analytics › Mass spectrometry · 15 Feb 2026 · 21 likes I would call the community position on mass error in ppm likely rather than established, and I would be comfortable defending that hedge.
Nausea profile of amylin analogues compared with GLP-1 agonists Started this topic · Compounds › Cagrilintide & amylin analogues · 9 Feb 2026 · 46 likes Nausea profile of amylin analogues compared with GLP-1 agonists Writing it up because I had to work it out twice and would rather nobody else did. I have spent a…
Blinding yourself: practical methods and their limits Replied, post #3 · Research Methods › N-of-1 designs · 1 Feb 2026 · 0 likes The arithmetic in post #2 is right; the assumption feeding it is the part to check. Nothing in a personal experiment is medical advice to anyone including yourself, and…
Tirzepatide molecular mass and the charge states you would expect on ESI — does this… Replied, post #12 · Compounds › Tirzepatide · 20 Jan 2026 · 1 like Content versus purity applies here as everywhere: a lyophilised vial can be highly pure and contain less peptide than the label states, because the balance of the mass…
Shoulders, tangent skims, and defensible integration — the long version Replied, post #8 · Analytics › HPLC & UHPLC · 10 Jan 2026 · 28 likes This follows post #5 rather than contradicting it. Where the baseline is drawn is the least documented and most consequential choice in the whole determination.…
Distinguishing expected GI effects from something that needs urgent attention Replied, post #64 · Practice › Side effects · 9 Jan 2026 · 1 like The relationship between symptom burden and outcome is not what people assume. Feeling worse is not evidence of a larger effect and feeling nothing is not evidence of…
Coming back to: Why most self-reports here are not experiments, and that is fine Replied, post #31 · Research Methods › N-of-1 designs · 28 Dec 2025 · 0 likes Confounding in personal experiments: other things change when you start a medication (season, exercise, diet, stress). Documenting those confounders helps you…
Prescription requirements and telehealth models Replied, post #91 · Sourcing › Regulatory · 26 Dec 2025 · 3 likes On prescription requirements and telehealth models I would separate what is worth knowing from what is worth acting on. The first list is long and the second is short,…
Reference intervals: how they are constructed and why one in twenty flags Replied, post #20 · Clinical › Bloodwork · 8 Dec 2025 · 7 likes Time of day: some biomarkers vary across the day. Cortisol in the morning differs from cortisol in the evening. Comparing results from different times of day is…
Detection wavelength and why 214 nm and 280 nm disagree Replied, post #83 · Analytics › HPLC & UHPLC · 16 Nov 2025 · 29 likes Taking post #82 at face value and following it one step further. Reading this detection wavelength thread as someone who came in with a fixed view: the third and…
About the Mental health category Replied, post #8 · Wellbeing › Mental health · 31 Oct 2025 · 0 likes Expectations set by other people's reported trajectories are a documented source of distress, and the trajectories posted are not representative. The mechanism is…
Reading SURMOUNT-1 without the press release Replied, post #47 · Compounds › Tirzepatide · 28 Oct 2025 · 0 likes The arithmetic in post #44 is right; the assumption feeding it is the part to check. Categorical response thresholds — the proportion reaching ten, fifteen or twenty…
What happens after your first post: likes, trust levels, and why none of it matters much… Replied, post #24 · Start Here › Welcome · 14 Oct 2025 · 8 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…
Pinch or no pinch, and how needle length changes the answer Replied, post #109 · Practice › Administration · 14 Oct 2025 · 11 likes Leave real distance between consecutive sites rather than moving a centimetre. Repeatedly injecting one area changes the local tissue over time and eventually changes…
Can a home kit substitute for a laboratory report? A careful no Replied, post #30 · Analytics › Home & field testing · 14 Oct 2025 · 0 likes Before the thread moves on from home kit substitute — what is the sample size behind the claim? I am not being difficult; I have seen the same figure quoted from an n…
Warfarin and altered intake: the monitoring argument — the long version Replied, post #20 · Practice › Interactions · 21 Sep 2025 · 20 likes Warfarin and altered intake: 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…
Titles that describe the question, not the situation — what changed since Replied, post #5 · Start Here › How to Ask · 9 Sep 2025 · 1 like Asking a follow-up: new topic or reply in the old one? If the answer depends on the previous post, reply. If it is a question that makes sense without the previous…
When a tidy document is a signal and when it is decoration — does this still hold? Replied, post #8 · Analytics › COA interpretation · 1 Sep 2025 · 25 likes Residual solvent screening is not standard on these documents and its presence is a signal about the manufacturer's own systems rather than about the vial. Adding the…
Hypertension improvement and when medication needs revisiting Replied, post #14 · Clinical › Comorbidities · 18 Aug 2025 · 0 likes Where the honest answer is "nobody knows", giving it plainly is more useful than a confident synthesis of mechanism and anecdote.
BPC-157: what the rodent literature actually shows, and what it does not — a second… Replied, post #85 · Compounds › Repair & healing peptides · 17 Aug 2025 · 28 likes Reading a preclinical wound-healing model: the model shows whether a mechanism is plausible in a specific context. It does not show magnitude of effect in humans, does…
Documentation that appears only after payment Replied, post #6 · Sourcing › Red flags · 16 Aug 2025 · 0 likes Building on post #5 rather than restating it. Where somebody posts a concern, ask what would resolve it before arguing about it. Half of these threads end with a…
When a preprint is the best available evidence and we say so Replied, post #57 · Evidence › Preprints · 14 Aug 2025 · 0 likes A preprint with the data and code attached is frequently more checkable than a published paper without them. Reviewed and reproducible are different properties. A…
The "under review" status pill and when a moderator applies it — a second dataset Replied, post #13 · Evidence › Preprints · 14 Aug 2025 · 2 likes Media coverage of preprints rarely mentions the status. That is where most of the downstream confusion in this subcategory originates. None of the above is medical…
[2026 update] Cardiovascular risk: reading the outcome trials as a set Replied, post #91 · Clinical › Comorbidities · 12 Aug 2025 · 31 likes Right, and stated more narrowly than I would have dared to state it.
A ten-fold dose error caught before injection — one year on Replied, post #137 · Devices › Syringes & needles · 5 Aug 2025 · 0 likes Taking post #135 at face value and following it one step further. Needle length for subcutaneous delivery is a question about tissue depth and injection angle together.…
When to stop reading forums, including this one Replied, post #7 · Wellbeing › Mental health · 18 Jul 2025 · 0 likes The most useful posts in this subcategory are specific about what helped, including the ordinary things that sound too simple to mention. Small point, but it is the one…
Why the timeline is on the right and not the left Replied, post #25 · Meta › Site feedback · 4 Jun 2025 · 0 likes Post #23 answers the question as asked. The question underneath it is different. Not a bug, but worth saying: the moderation log is paginated at twenty-five entries and…
Reading a trial's population section before its results — does this still hold? Replied, post #124 · Evidence › Trials · 20 May 2025 · 16 likes Absolute numbers, not just relative: a 30% relative reduction tells you the ratio but not the practical magnitude. The event rate in each arm and the difference between…
Follow-up: Documentation that appears only after payment Replied, post #50 · Sourcing › Red flags · 6 May 2025 · 15 likes I read post #46 twice before replying, because I had assumed the opposite. Nothing here should be read as an accusation against a named company, and the guidelines…
Adducts: sodium, potassium, and the peak you did not expect Replied, post #56 · Analytics › Mass spectrometry · 4 Apr 2025 · 0 likes Quantitation by MS: most quantitation is done by LC-UV detection at 214 nm, not by MS, because extinction coefficients are better known. MS can quantify if an internal…
Journal club: SUSTAIN 6 and its retinopathy signal — does this still hold? Replied, post #58 · Evidence › Journal club · 17 Mar 2025 · 9 likes SUSTAIN 6 has been discussed here with more heat than it deserves, mostly because two definitions have been in play the whole time.
Maintainer handover: how it works Replied, post #43 · Meta › Wiki maintenance · 16 Mar 2025 · 2 likes I will take the caveat as seriously as the claim, which is the point of putting it there.
Coverage for the indication versus for the drug — a second dataset Replied, post #18 · Access › Insurance & coverage · 14 Mar 2025 · 0 likes Picking up post #15: that is the part I would want checked first. Adding a null result on Coverage. I looked, carefully, and found nothing, and null results deserve…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #112 · Data & Tools › Calculators · 2 Mar 2025 · 1 like Significant figures in the output should not exceed what the inputs support. A concentration calculated from a nominal vial mass is not known to four decimal places.…
Coming back to: Recording a dissent on a document rather than suppressing it Replied, post #34 · Documentation › Doc review · 9 Feb 2025 · 0 likes Taking post #32 at face value and following it one step further. Recording a dissent is a question about a distribution, not about a value, and treating it as a value…
Protein density versus volume when you cannot eat much Replied, post #77 · Nutrition & Training › Protein & intake · 6 Feb 2025 · 25 likes Adding a small correction to the protein density versus volume summary above rather than a disagreement with it. The substance holds; one of the figures is out by a…
Second pass at: Regression to the mean in progress reports Replied, post #41 · Research Methods › Statistics · 1 Feb 2025 · 20 likes I had written a reply contradicting post #39 and deleted it. Here is what survived. A note on how Regression gets discussed rather than on Regression itself: the…
Journal club: SURMOUNT-1, read without the press release Replied, post #43 · Evidence › Journal club · 14 Jan 2025 · 3 likes Adding a null result on SURMOUNT-1. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.
Follow-up: Tirzepatide's shorter half-life and its one practical consequence Replied, post #136 · Compounds › Tirzepatide · 8 Jan 2025 · 27 likes Nausea profile: some people report tirzepatide as less nausea-prone than semaglutide, others report it as more. The trial reported gastrointestinal effects broadly…
SURPASS-2 and the comparator dose question that will not go away Replied, post #80 · Compounds › Tirzepatide · 15 Dec 2024 · 1 like Injection-site reactions were reported at a low but non-zero rate across the trials. The practical point is that a reaction at one site does not predict a reaction at…
Promotion criteria, and the one that stops most nominations Replied, post #141 · Documentation › Doc review · 15 Dec 2024 · 0 likes Interdependencies: if updating one page requires updating related pages, posting that connection here helps the maintainers see the scope of work.
Second pass at: A field-by-field walk through a certificate of analysis Replied, post #146 · Analytics › COA interpretation · 10 Dec 2024 · 2 likes Posting my field-by-field walk through a certificate numbers with the method attached so they can be discounted properly. Uncontrolled, unblinded, and collected by…
Type 1 diabetes: off-label use and the evidence gap — what changed since Replied, post #24 · Clinical › Special populations · 21 Nov 2024 · 16 likes Post #22 is the version of this I will quote in future. One addition. Where I would push back on the Type 1 diabetes consensus is the confidence, not the direction. The…
EMA product information as a primary source — does this still hold? Replied, post #74 · Regional › European Union · 17 Nov 2024 · 26 likes Pharmacy practice: pharmacies in different EU countries differ in conservatism about irregular prescriptions. Some will decline a prescription they consider irregular;…
Why "any advice?" is the least effective ending for a post Replied, post #27 · Start Here › How to Ask · 11 Nov 2024 · 16 likes Chromatogram questions: describe the method first. Column type, gradient, wavelength, detection method. Everything else follows from method. A chromatogram without…
Time to steady state after a dose increase Replied, post #102 · Pharmacology › Pharmacokinetics · 5 Nov 2024 · 28 likes Area under the curve is the exposure measure that matters for most effects in this class. Peak concentration matters more for tolerability. Happy to be the one who is…
Transporting a vial for a weekend away Replied, post #11 · Practice › Storage & stability · 27 Oct 2024 · 23 likes Where I part company with post #7, and it is a narrow parting. Temperature excursions in transit are common and are not all equal. A few hours warm is a different event…
Second pass at: Buffers, pH and why a formulation is a formulation Replied, post #21 · Pharmacology › Formulation chemistry · 26 Oct 2024 · 0 likes On post #17 — agreed on the reasoning, with one qualification. What I want from this Buffers thread is the list of things that would need to be true for the claim to…
How to ask for a dose change without antagonising anyone — what changed since Replied, post #7 · Clinical › Prescriber conversations · 25 Oct 2024 · 29 likes Post #4 is the version of this I will quote in future. One addition. The most useful question anyone here has reported asking: what would make you change your mind…
Second pass at: Hoarding and why it makes a shortage worse Replied, post #19 · Access › Shortages · 9 Oct 2024 · 16 likes Planning around a known shortage window is easier than reacting to one, and the notices give advance warning more often than people expect. I have changed my mind on…
[2026 update] People with a low starting BMI: where the evidence stops Replied, post #12 · Clinical › Special populations · 2 Sep 2024 · 0 likes This is the first time the answer has come with its own limits attached. Appreciated.
Splitting a vial for two laboratories: how to do it without ruining both — what changed… Replied, post #2 · Sourcing › Independent verification · 15 Aug 2024 · 5 likes I had written a reply contradicting the opening post and deleted it. Here is what survived. Where the Splitting a vial reasoning breaks down for me is the step from the…