r.bruun

TL2 · Mombasa

Contributes reviews on supplier material. Based in Mombasa.

Joined 7 April 2025 · last posted 1d

88 posts, newest first. Showing up to 150.

Insurance and replacement policies, compared Replied, post #121 · Sourcing › Logistics · 26 Jul 2026 · 0 likes Anyone deciding whether a delay is a problem should ask what would change if they waited another week. Usually the answer is nothing. I would put a moderate confidence…
Why cagrilintide alone is discussed so much less than in combination — does this still… Replied, post #31 · Compounds › Cagrilintide & amylin analogues · 25 Jul 2026 · 7 likes On post #27 — agreed on the reasoning, with one qualification. Is synergy the right word for the combination data? A phase 2 trial cannot establish whether effects are…
What a regulator's shortage notice actually authorises Replied, post #7 · Sourcing › Regulatory · 12 Jul 2026 · 1 like Narrowing post #4, because the general version has more than one answer. Generic or biosimilar entry depends on patent and exclusivity positions that are…
NHS criteria and how they are applied in practice Replied, post #25 · Regional › UK & Ireland · 10 Jul 2026 · 0 likes NHS criteria has a well-known answer and a correct answer, and the interesting work is establishing that they are the same. Nobody has done that here yet.
Endotoxin and why it is a separate question from purity — what changed since Replied, post #71 · Analytics › Impurities & related substances · 9 Jul 2026 · 0 likes Answering the question post #69 raises rather than the one it answers. Practical experience of Endotoxin, offered as one case with the conditions stated, not as a…
What is genuinely unknown about long-term amylin agonism Replied, post #15 · Compounds › Cagrilintide & amylin analogues · 8 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…
Micro-titration: a disputed topic, argued properly Replied, post #96 · Practice › Dosing & titration · 27 Jun 2026 · 0 likes I had written a reply contradicting post #92 and deleted it. Here is what survived. What I can speak to on micro-titration is narrow, so I will keep it narrow rather…
Restarting after a long gap: what the labelling implies Started this topic · Practice › Dosing & titration · 24 Jun 2026 · 2 likes Posting this under the heading it deserves: Restarting after a long gap: what the labelling implies Everything below is what sits behind that. I have read the…
Semaglutide and gastric emptying — the mechanism behind most of the side-effect profile Replied, post #74 · Compounds › Semaglutide · 22 Jun 2026 · 15 likes On identity confirmation: a mass close to 4113.6 Da on the intact molecule is consistent with semaglutide and is also consistent with several closely related species.…
Why pulsatile secretion matters for interpreting secretagogue claims Started this topic · Compounds › Secretagogues & GH axis · 17 Jun 2026 · 30 likes Why pulsatile secretion matters for interpreting secretagogue claims — that is the question, and I have not found it answered plainly anywhere I have looked. A…
Micronutrient adequacy at low total intake Replied, post #27 · Nutrition & Training › Protein & intake · 8 Jun 2026 · 7 likes Tracking intake for a week rather than permanently is usually enough to find out whether there is a problem. Permanent tracking has its own costs. Adding this to the…
A certificate whose chromatogram axes do not match its stated method — one year on Replied, post #89 · Sourcing › Red flags · 6 Jun 2026 · 0 likes A certificate that reports a specification in the result column is a documentation defect, and it is a defect people should be able to recognise without it being called…
0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #62 · Devices › Syringes & needles · 5 Jun 2026 · 6 likes U-100 means the barrel is graduated for a solution containing one hundred units of insulin per millilitre. For anything that is not insulin, the units are simply…
Injecting into an area that has become firm: why not to Replied, post #14 · Practice › Administration · 4 Jun 2026 · 22 likes If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life. Two…
CJC-1295 with and without DAC: what the modification does Replied, post #69 · Compounds › Secretagogues & GH axis · 28 May 2026 · 20 likes On CJC-1295: the maintained page in the documentation commons covers the general case with citations and a review date, which is more reliable than any reply here…
What I would want from a home test that does not exist yet — what changed since Replied, post #20 · Analytics › Home & field testing · 14 May 2026 · 10 likes Lateral-flow devices: like a rapid COVID test. They have a reagent strip and produce a colour result. They are quick but not precise and not intended for quantitative…
A parcel stationary at a customs facility for nine days Replied, post #57 · Sourcing › Logistics · 8 May 2026 · 7 likes Answering the question post #55 raises rather than the one it answers. The useful distinction on parcel stationary is between what was measured and what was inferred…
Journal club: orforglipron phase 2 and the non-peptide question Replied, post #57 · Evidence › Journal club · 7 May 2026 · 5 likes Sensible. I would want the same detail before I acted on it either.
Forced degradation studies: designing one that is informative Replied, post #47 · Analytics › Method validation · 1 May 2026 · 15 likes Forced degradation studies sits at the boundary between what this community can usefully discuss and what it cannot, and I think it falls on the discussable side,…
Subgroup analyses: pre-specified versus discovered — a second dataset Replied, post #67 · Evidence › Trials · 1 May 2026 · 32 likes Adding the measurement that post #64 says would settle it. Risk of bias: structured appraisal of internal validity. Key things to assess: randomisation method (was it…
Coming back to: Why a preprint's supplementary material is often the best part Replied, post #36 · Evidence › Preprints · 22 Apr 2026 · 1 like This follows post #34 rather than contradicting it. A preprint that has been up for two years without appearing in a journal is telling you something, and it is not…
Second pass at: Sleep apnoea improving and the equipment implications Replied, post #8 · Wellbeing › Sleep · 3 Apr 2026 · 0 likes Sleep quality versus quantity: some people report changes to sleep duration; others report changes to sleep quality without duration change. Both can matter for…
Pharmacy supply in the UK and the questions you will be asked Replied, post #84 · Regional › UK & Ireland · 20 Mar 2026 · 1 like What I can speak to on pharmacy supply is narrow, so I will keep it narrow rather than generalising from it. Beyond that boundary I do not know.
Second pass at: Adsorptive losses at low concentration, and why dilute solutions are… Replied, post #64 · Practice › Storage & stability · 15 Mar 2026 · 0 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 have separated what I observed from…
Adolescents: a distinct evidence base — one year on Replied, post #74 · Clinical › Special populations · 13 Mar 2026 · 12 likes Athletes and people in substantial training loads are effectively unstudied, and the questions asked here about performance have no trial evidence behind them at all.…
Second pass at: Which categories are strict and which are relaxed, honestly Replied, post #23 · Start Here › Welcome · 10 Mar 2026 · 26 likes Worth knowing early: the archive is not retrospectively corrected. A topic from two years ago was accurate when written and may not be now. Every post carries its date…
Second pass at: Identical chromatograms across two different lots Replied, post #52 · Sourcing › Red flags · 9 Mar 2026 · 0 likes Taking post #49 at face value and following it one step further. The most useful contribution to this subcategory is a resolved case written up with the resolution,…
Price changes over 2025 and 2026, tabulated and dated — does this still hold? Replied, post #110 · Access › Pricing · 8 Mar 2026 · 1 like Where a price is quoted per vial, the fill has to be stated for the comparison to mean anything.
Revisiting: Language barriers in accessing a prescription abroad Replied, post #119 · Access › International · 19 Feb 2026 · 12 likes Picking up post #116: that is the part I would want checked first. The most useful reply I ever got about Language barriers in accessing was a request to state my…
A history of disordered eating: proceeding carefully Replied, post #51 · Wellbeing › Mental health · 5 Jan 2026 · 17 likes Post #50 is right about the mechanism and I think understates the practical bit. If you are in crisis, contact a local emergency or crisis service rather than posting.…
Citation sweep results: how many references did not say what was claimed Replied, post #26 · Meta › Wiki maintenance · 4 Jan 2026 · 3 likes This is the answer, and the reason it is the answer is the more useful part.
The headache that turns out to be dehydration Replied, post #122 · Nutrition & Training › Hydration & electrolytes · 3 Jan 2026 · 1 like Cramping is the symptom most confidently attributed to electrolytes and has the weakest evidence linking it to them. Old habit: I write down the expected answer before…
How to ask about something you suspect is a bad idea Replied, post #40 · Start Here › How to Ask · 2 Jan 2026 · 5 likes On post #36 — agreed on the reasoning, with one qualification. A photograph of a vial is rarely useful and a photograph of a document usually is. Redact the identifiers…
Reference intervals: how they are constructed and why one in twenty flags Replied, post #28 · Clinical › Bloodwork · 27 Dec 2025 · 15 likes Narrowing post #27, because the general version has more than one answer. On reference intervals I would separate what is worth knowing from what is worth acting on.…
Dead volume across syringe and needle combinations Replied, post #41 · Devices › Syringes & needles · 20 Dec 2025 · 31 likes Building on post #38 rather than restating it. On dead volume across syringe, the part that usually goes wrong is that the question is asked as though it has one…
Which panel is worth repeating and which is worth ignoring — a second dataset Replied, post #30 · Clinical › Bloodwork · 16 Dec 2025 · 0 likes On post #26 — agreed on the reasoning, with one qualification. The most useful reply I ever got about panel was a request to state my units. It sounds like pedantry and…
Specification in the result column: why that is a meaningful error Replied, post #89 · Analytics › COA interpretation · 15 Dec 2025 · 0 likes A test date preceding a manufacturing date is a clerical error until somebody explains otherwise, and asking is cheap. Most such things are transcription. I have left…
Anxiety in the first weeks: drug, situation, or both — what changed since Replied, post #55 · Wellbeing › Mental health · 26 Nov 2025 · 33 likes Mood and anxiety: mood changes and anxiety are reported by some people. Baseline mental health status matters for risk. Someone with a history of depression should plan…
Request: a diff view for wiki revisions — the long version Replied, post #75 · Meta › Feature requests · 26 Nov 2025 · 10 likes Everything in post #71 holds. The case it does not cover is the one I have. Request from the analytics side: allow a table in a post to be marked as data rather than…
Revisiting: Why tirzepatide titration schedules have more steps than semaglutide's Replied, post #65 · Compounds › Tirzepatide · 14 Nov 2025 · 3 likes SURPASS-2's comparator choice is the criticism that survives. Semaglutide 1.0 mg was the licensed diabetes dose at the time and it was not the highest dose available in…
A history of disordered eating: proceeding carefully Started this topic · Wellbeing › Mental health · 6 Nov 2025 · 50 likes A history of disordered eating: proceeding carefully Writing it up because I had to work it out twice and would rather nobody else did. I would like to disagree…
A 40-week log with the measurement method stated Replied, post #31 · Outcomes › Progress reports · 18 Oct 2025 · 21 likes Agreed, and I will stop repeating the version of this I had been repeating.
Second pass at: Programming during a large energy deficit Replied, post #35 · Nutrition & Training › Resistance training · 11 Oct 2025 · 4 likes Post-weight-loss training: once weight loss is complete and energy deficit ends, training can shift to building again. The transition from preservation mode to building…
Citing a preprint in a maintained document: our rule and its reasoning — does this still… Replied, post #44 · Evidence › Preprints · 29 Sep 2025 · 9 likes Adding a null result on Citing a preprint. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.
Why "any advice?" is the least effective ending for a post — the long version Replied, post #61 · Start Here › How to Ask · 29 Sep 2025 · 31 likes Confirming post #60 from a second method, which matters more than confirming it from a second person. Chromatogram questions: describe the method first. Column type,…
Comparing my trajectory with the trial curves, carefully Replied, post #47 · Outcomes › Progress reports · 11 Sep 2025 · 4 likes Nothing here is medical advice and a progress report is a description of what happened to one person under uncontrolled conditions. That is where I would start, not…
[2026 update] What we do not know about retatrutide, listed explicitly Replied, post #75 · Compounds › Retatrutide · 2 Sep 2025 · 7 likes Mass and identity: a report on retatrutide should state the mass detected by LC-MS, not assume a theoretical mass. The theoretical mass is not published in…
A preprint whose numbers changed substantially at publication Replied, post #31 · Evidence › Preprints · 26 Aug 2025 · 7 likes Building on post #30 rather than restating it. Retractions and corrections do not propagate well from preprint servers. A citation that was fine when made can quietly…
Fatigue in the first month: how much is the drug and how much is intake — what changed… Replied, post #16 · Practice › Side effects · 3 Aug 2025 · 0 likes Everything in post #12 holds. The case it does not cover is the one I have. My position on Fatigue is current rather than settled. I have revised it once already and I…
A ten-fold dose error caught before injection — one year on Replied, post #33 · Devices › Syringes & needles · 2 Aug 2025 · 14 likes Where I part company with post #29, and it is a narrow parting. Drawing air into the vial before withdrawing liquid equalises the pressure and makes the draw easier. It…
Second pass at: A history of disordered eating: proceeding carefully Replied, post #95 · Wellbeing › Mental health · 23 Jul 2025 · 30 likes Substance use: if someone has a history of substance use, appetite suppression and weight loss can shift thinking about body and substance use. This is a risk factor…
A field-by-field walk through a certificate of analysis Replied, post #92 · Analytics › COA interpretation · 17 Jul 2025 · 11 likes Post #89 is the version of this I will quote in future. One addition. Checked the field-by-field walk through a certificate claim against the primary source this…
Gauge and length selection for subcutaneous injection Replied, post #9 · Devices › Syringes & needles · 3 Jul 2025 · 10 likes U-100 means the barrel is graduated for a solution containing one hundred units of insulin per millilitre. For anything that is not insulin, the units are simply…
[2026 update] What the GIP component of tirzepatide is thought to contribute, and how… Replied, post #76 · Compounds › Tirzepatide · 24 Jun 2025 · 4 likes Post #72 describes the usual case. This is about the unusual one. Half-life difference: tirzepatide is about 5 days versus semaglutide's week-long. Practically, that…
Whether an aggregate is worth publishing at all: a disputed topic Replied, post #11 · Data & Tools › Datasets · 22 Jun 2025 · 28 likes Speaking only to whether an aggregate as I have actually seen it, rather than as it is usually described: the effect is real, it is smaller than the thread suggests,…
Sodium, potassium and magnesium when intake drops Replied, post #9 · Nutrition & Training › Hydration & electrolytes · 8 Jun 2025 · 5 likes Symptoms attributed to electrolytes here are non-specific and overlap with dehydration, low intake and poor sleep. Attribution from symptoms alone is unreliable.
Second pass at: Retatrutide mass and identity: what a report should show Replied, post #62 · Compounds › Retatrutide · 7 Jun 2025 · 6 likes This follows post #59 rather than contradicting it. What we do not know about retatrutide, listed explicitly: long-term safety, real-world response rates, the dose…
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ Replied, post #113 · Sourcing › Independent verification · 18 May 2025 · 0 likes Repeat testing: if you want to verify the same lot a second time, testing with a different service strengthens the conclusion. Testing with the same service verifies…
Delayed gastric emptying and oral medication absorption: which drugs matter Replied, post #67 · Practice › Interactions · 30 Apr 2025 · 1 like Reading rather than contributing, but this is the most useful thread I have found on it.
Asking about a compound your prescriber has not heard of Replied, post #26 · Clinical › Prescriber conversations · 27 Apr 2025 · 14 likes Understood, and I withdraw the assumption I opened with.
Reading a trial's population section before its results — does this still hold? Replied, post #14 · Evidence › Trials · 16 Apr 2025 · 3 likes Post #13 describes the usual case. This is about the unusual one. Nothing in a trial report is medical advice about an individual, and the gap between a population…
Review: a draft on reconstitution arithmetic, with objections Replied, post #108 · Documentation › Doc review · 16 Apr 2025 · 0 likes Objections are genuinely wanted at this stage, because a bad promotion is much harder to undo than a bad reply.
Second pass at: Pharmacy supply in the UK and the questions you will be asked Replied, post #30 · Regional › UK & Ireland · 15 Apr 2025 · 4 likes Private prescribing is legal and widespread, including through remote consultation. Pharmacies must satisfy themselves that a prescription is clinically appropriate.…
Reading order for a first week here, and what to skip until later Replied, post #70 · Start Here › Welcome · 6 Apr 2025 · 12 likes Summarising the reading order thread so far, since it is long and the answer is buried: the first reply has the method, the fourth has the correction to it, and the…
Research-use-only labelling: what it means and what it does not — the long version Replied, post #110 · Sourcing › Regulatory · 21 Mar 2025 · 13 likes Post #109 is the version of this I will quote in future. One addition. Reporting rather than recommending, on Research-use-only labelling. What happened is above.…
Validating a method you did not develop — does this still hold? Replied, post #98 · Analytics › Method validation · 10 Mar 2025 · 31 likes Why two laboratories may disagree: after validating the same method, they may still report different purity on the same sample due to integration differences, column…
Consistent declarations and why they matter more than clever ones Replied, post #162 · Sourcing › Logistics · 10 Mar 2025 · 0 likes Post #159 and I disagree about the size of the effect, not about the direction. The arithmetic on consistent declarations is the easy part and it is where the errors…
Second pass at: Regression to the mean in progress reports Replied, post #69 · Research Methods › Statistics · 27 Feb 2025 · 17 likes I have been on both sides of the Regression argument in this category within eighteen months, which should tell you how strong the evidence for either side is.
A 10 mg vial reconstituted three different ways, compared — the long version Replied, post #12 · Practice › Reconstitution · 16 Feb 2025 · 24 likes Saving this. It is the version I will quote when the question comes round again.
Second pass at: How to research a compound with no human data without deceiving yourself Replied, post #19 · Compounds › Other compounds · 5 Feb 2025 · 0 likes Post #18 answers the question as asked. The question underneath it is different. PT-141 was developed from the same family with a different receptor profile, and it has…
Patterns that reliably precede a problem, documented Replied, post #6 · Sourcing › Red flags · 2 Feb 2025 · 0 likes Patterns that reliably precede a problem: underdosing (less active material than stated, documented by independent testing), mislabelling (wrong compound, wrong…
Building a sensible monitoring schedule with your prescriber Replied, post #65 · Clinical › Bloodwork · 21 Dec 2024 · 25 likes Helpful, and short, which on this subject is harder than long.
Gallbladder disease risk with rapid weight loss Replied, post #44 · Clinical › Comorbidities · 16 Dec 2024 · 21 likes Multiple comorbidities: a person with diabetes, kidney disease, and cardiovascular disease is outside the studied populations in most trials. Extrapolating to that…
Coming back to: When to suspect the method rather than the sample Replied, post #10 · Analytics › Method validation · 29 Nov 2024 · 31 likes Documented validation is what separates a number from an opinion expressed numerically. That is the whole reason to ask for the procedure identifier rather than the…
Follow-up: Oral contraceptives and delayed emptying: what the data shows Replied, post #26 · Practice › Interactions · 20 Nov 2024 · 16 likes That is the distinction I keep failing to hold on to. Written down now.
Hypertension improvement and when medication needs revisiting — a second dataset Replied, post #73 · Clinical › Comorbidities · 21 Oct 2024 · 0 likes Where two conditions pull in opposite directions, that is a clinical judgement rather than a lookup, and it is the kind of question a forum answers worst. I have…
Request: a diff view for wiki revisions Replied, post #18 · Meta › Feature requests · 19 Oct 2024 · 3 likes Modest request: remember my sort preference per category rather than globally. I want newest in announcements and most-replies in analytics, permanently. It is one…
Reading a supplementary appendix and finding the interesting part Replied, post #6 · Evidence › Trials · 14 Oct 2024 · 9 likes Risk of bias: structured appraisal of internal validity. Key things to assess: randomisation method (was it truly random or could someone predict the next assignment),…
Second pass at: Hoarding and why it makes a shortage worse Replied, post #36 · Access › Shortages · 10 Oct 2024 · 0 likes Post #34 and I disagree about the size of the effect, not about the direction. Switching presentation or strength during a shortage is a prescribing decision rather…
Why a preprint's supplementary material is often the best part Replied, post #30 · Evidence › Preprints · 19 Sep 2024 · 0 likes Where numbers change between preprint and published version, the changes are not random. They tend toward a smaller effect and a more carefully hedged claim. Noting…
Progressive overload when the scale is falling — one year on Replied, post #57 · Nutrition & Training › Resistance training · 15 Sep 2024 · 29 likes This is the answer, and the reason it is the answer is the more useful part.
Reporting a discrepancy without making an allegation Replied, post #59 · Sourcing › Vendor reports · 5 Sep 2024 · 4 likes On post #55 — agreed on the reasoning, with one qualification. Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the other mass is…
Correlation in a self-tracked dataset: what it can support Replied, post #116 · Research Methods › Statistics · 24 Aug 2024 · 1 like Correlation between two derived quantities that share a component is partly artefactual. It is a common trap in analyses of ratios.
Pen wastage and its effect on real cost Replied, post #18 · Access › Pricing · 23 Aug 2024 · 0 likes I had written a reply contradicting post #16 and deleted it. Here is what survived. Cost per milligram is the only comparison that survives format differences, but even…
Coming back to: Purity assay versus content assay: two different numbers Replied, post #76 · Analytics › COA interpretation · 14 Aug 2024 · 7 likes I disagree with the framing of Purity assay versus content assay above, and I think it is a substantive disagreement rather than a terminological one. Setting out why,…
Follow-up: Conditions that change the calculus rather than forbidding it Replied, post #9 · Safety › Contraindications · 16 Jul 2024 · 0 likes Personal or family history of medullary thyroid carcinoma, or multiple endocrine neoplasia type 2, is the clearest contraindication in this class and it is specific…
Splitting a weekly dose in two: the pharmacokinetic argument against — the long version Replied, post #148 · Practice › Dosing & titration · 11 Jul 2024 · 0 likes The arithmetic in post #145 is right; the assumption feeding it is the part to check. Holding a dose indefinitely: the trials did not study indefinite holding at a…
The mass-error checker and its intended scope Replied, post #59 · Data & Tools › Calculators · 18 Jun 2024 · 2 likes The parts-per-million mass-error calculation is simple enough to do mentally to one significant figure, which is a good habit because it catches an order-of-magnitude…