k.otieno_stats

TL3 Statistician · Kisumu, KE

Applied statistician. Effect sizes, confidence intervals, and the difference between "no difference" and "not powered to detect one".

Joined 12 September 2024 · last posted 6d · groups: journal-club

115 posts, newest first. Showing up to 150.

Revisiting: The best-written scientific paper you have read Replied, post #109 · Lounge › Off topic · 22 Jul 2026 · 0 likes On post #105 — agreed on the reasoning, with one qualification. Two things before anyone answers the substance. First, the context in the first post is clear and…
Revisiting: PCOS and metabolic overlap: what is and is not studied Replied, post #58 · Clinical › Comorbidities · 22 Jul 2026 · 1 like Worth separating two things that post #54 runs together. Bariatric surgery history: altered anatomy after surgery affects absorption. That matters for oral medications…
[2026 update] Detection wavelength and why 214 nm and 280 nm disagree Replied, post #55 · Analytics › HPLC & UHPLC · 21 Jul 2026 · 11 likes Picking up post #52: that is the part I would want checked first. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the…
Prior authorisation: what the criteria usually require — a second dataset Replied, post #45 · Access › Insurance & coverage · 19 Jul 2026 · 26 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…
Why a glucagon receptor agonist in a weight-loss compound is not a contradiction Replied, post #39 · Compounds › Retatrutide · 19 Jul 2026 · 22 likes post #38 is right about the mechanism and I think understates the practical bit. Why this subcategory is more cautious than elsewhere: retatrutide is investigational,…
A pooled estimate that changed when one trial was added Replied, post #25 · Evidence › Meta-analyses · 18 Jul 2026 · 15 likes Sensitivity analysis: the authors re-run the meta-analysis excluding studies one at a time, or by quality, to see whether the pooled estimate changes. Robust results…
[2026 update] Currency conversion and the cost you did not see Replied, post #26 · Sourcing › Payments · 18 Jul 2026 · 0 likes Coming back to post #24, because the follow-up matters more than the original answer. Bank transfer and finality: once a bank transfer is sent, it is final. The money…
What a certificate commits its issuer to Replied, post #38 · Analytics › COA interpretation · 15 Jul 2026 · 6 likes Counter-ion form is crucial: peptides are isolated as salts, most often trifluoroacetate from reversed-phase purification or acetate after salt exchange. The…
Why retatrutide discussion here is more cautious than elsewhere — one year on Replied, post #59 · Compounds › Retatrutide · 13 Jul 2026 · 0 likes Triple agonism: is the effect additive, synergistic, or neither? A phase 2 comparison of tirzepatide (dual) to retatrutide (triple) would answer that question. The…
Follow-up: Signs of dehydration worth acting on Replied, post #23 · Safety › Adverse events · 13 Jul 2026 · 9 likes Medullary thyroid carcinoma is the reason these compounds are contraindicated in people with personal or family history of MTC or multiple endocrine neoplasia type 2.…
The anatomy of a question that gets answered within an hour Replied, post #106 · Start Here › How to Ask · 9 Jul 2026 · 0 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…
What I would want from a home test that does not exist yet Replied, post #28 · Analytics › Home & field testing · 5 Jul 2026 · 16 likes What physical quantity does the device measure? A colorimetric or lateral-flow method typically responds to a class of chemistry rather than to a specific molecule. It…
Alcohol: what is documented and what is folklore Replied, post #91 · Practice › Interactions · 3 Jul 2026 · 32 likes Food interactions: most interactions are absorption interactions. Some medications absorb better with food, others better on an empty stomach. With an incretin agonist…
Tracking a shortage from primary sources rather than rumour Replied, post #80 · Access › Shortages · 2 Jul 2026 · 8 likes Shortage predictions: regulators and suppliers issue shortage alerts before they become acute. Checking the regulatory website for shortages gives you advance notice.
Does dual agonism explain the effect size, or is it dose? Replied, post #32 · Compounds › Tirzepatide · 13 Jun 2026 · 23 likes Storage and stability: published data on licensed tirzepatide formulations exists and is worth reading directly rather than through summarised claims. Reconstituted…
Ultrasound and skinfolds: operator dependence in practice Replied, post #14 · Outcomes › Body composition · 12 Jun 2026 · 17 likes On post #10 — agreed on the reasoning, with one qualification. Ultrasound: thickness of subcutaneous fat at specific sites. Less standardised than DXA and…
Revisiting: Can a home kit substitute for a laboratory report? A careful no Replied, post #30 · Analytics › Home & field testing · 4 Jun 2026 · 2 likes Precision of home tests: most consumer-accessible devices are not precise to the level people want ("is this 99% pure or 97% pure"). They give a yes/no or a rough…
Research-use-only status: what it means legally and practically Replied, post #48 · Compounds › Other compounds · 26 May 2026 · 15 likes AOD-9604 is a fragment of human growth hormone and has been discussed as a potential weight-loss agent based on theoretical mechanism. The fragment hypothesis — that…
Why fasting instructions for oral semaglutide are not optional advice Replied, post #13 · Compounds › Oral incretins · 24 May 2026 · 0 likes Picking up post #10: that is the part I would want checked first. Why an oral formulation is a formulation achievement: the molecule is the same but the tablet is…
Dizziness on standing and the electrolyte explanation — does this still hold? Replied, post #84 · Practice › Side effects · 23 May 2026 · 0 likes Picking up post #81: that is the part I would want checked first. Injection site reaction: local erythema, nodules, or induration at injection sites is reported by some…
Research-use-only status: what it means legally and practically Replied, post #35 · Compounds › Other compounds · 30 Apr 2026 · 3 likes Picking up post #32: that is the part I would want checked first. How to research a compound with no human data: mechanistic plausibility is one input. Preclinical data…
What "marked as solution" means and who gets to mark it — does this still hold? Replied, post #70 · Start Here › Welcome · 24 Apr 2026 · 11 likes post #69 is right about the mechanism and I think understates the practical bit. Marked solutions are the site's way of saying that someone asked a good question and…
[2026 update] Composite endpoints and the component doing the work Replied, post #64 · Evidence › Trials · 10 Apr 2026 · 5 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…
Transporting a vial for a weekend away — a second dataset Replied, post #24 · Practice › Storage & stability · 9 Apr 2026 · 15 likes Refrigeration slows degradation. Repeated warming and cooling is worse than continuous refrigeration. Light exposure is worth avoiding. The concentration matters…
Personal import allowances, compared — a second dataset Replied, post #100 · Access › International · 8 Apr 2026 · 2 likes Insurance and coverage: coverage decisions are national. A compound approved in one country might not be covered by insurance in another. Checking both approval and…
Revisiting: Drawing up with one needle and injecting with another Replied, post #31 · Practice › Administration · 3 Apr 2026 · 1 like Drawing up with one needle and injecting with another: a reasonable practice if you have extra needles. Fresh needle for injection reduces tissue drag and can decrease…
Foaming during reconstitution and whether it matters — the long version Replied, post #79 · Practice › Reconstitution · 29 Mar 2026 · 0 likes post #78 answers the question as asked. The question underneath it is different. Over-dilution: if your target dose is 0.25 mg and your syringe is a 1 mL insulin…
Insomnia at a dose step: reported experiences — the long version Replied, post #2 · Wellbeing › Sleep · 10 Mar 2026 · 3 likes the opening post is right about the mechanism and I think understates the practical bit. Energy and sleep needs: rapid weight loss increases real metabolic stress.…
Reading an interaction checker output critically Replied, post #137 · Practice › Interactions · 5 Mar 2026 · 13 likes post #136 answers the question as asked. The question underneath it is different. Sulfonylureas and meglitinides: these agents stimulate insulin release and carry…
A widely repeated interaction claim that turns out to be unsupported Replied, post #28 · Practice › Interactions · 15 Feb 2026 · 4 likes SGLT2 inhibitors: frequently co-administered and relevant to renal and cardiovascular discussion, not to interactions. There is no pharmacokinetic interaction of concern.
Seven-day rolling means and why weekly readings mislead — one year on Replied, post #30 · Outcomes › Progress reports · 10 Feb 2026 · 0 likes Worth separating two things that post #26 runs together. Non-scale victories: muscle gain or maintenance, clothing fit, energy level, and capability (like climbing…
Warfarin and altered intake: the monitoring argument — the long version Replied, post #105 · Practice › Interactions · 5 Feb 2026 · 28 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…
Seven-day rolling means and why weekly readings mislead — one year on Replied, post #5 · Outcomes › Progress reports · 5 Feb 2026 · 1 like Protein intake and resistance training: both self-reported and therefore optimistic in most reports. Recording them anyway creates a record you can look back on.
Follow-up: A supplier that answers analytical questions with restated claims Replied, post #65 · Sourcing › Red flags · 26 Jan 2026 · 6 likes Coming back to post #63, because the follow-up matters more than the original answer. Rapid supplier turnover: a supplier that changes corporate structure, domain name,…
Coming back to: "Greater than or equal to 99%" as a specification rather than a result Replied, post #3 · Analytics › COA interpretation · 13 Jan 2026 · 8 likes Counter-ion form is crucial: peptides are isolated as salts, most often trifluoroacetate from reversed-phase purification or acetate after salt exchange. The…
Why "add 2 mL" is not an instruction Replied, post #28 · Practice › Reconstitution · 13 Jan 2026 · 3 likes Osmolarity and reconstitution: the osmolarity of the reconstituted solution affects comfort on injection. Isotonic solutions (close to blood osmolarity) are less…
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ — a second dataset Replied, post #18 · Sourcing › Independent verification · 9 Jan 2026 · 1 like 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…
What "verified" means on our vendor pages, stated narrowly Replied, post #27 · Sourcing › Vendor reports · 1 Jan 2026 · 4 likes post #26 answers the question as asked. The question underneath it is different. What "verified" means on our pages: specific lots were independently measured on stated…
Second pass at: The topic list is dense — is that deliberate? Replied, post #29 · Meta › Site feedback · 27 Dec 2025 · 15 likes Display issues: broken layouts, images not loading, text overlapping — report with the browser and device you were using. Display bugs are platform-specific.
Pre-registering a personal experiment, seriously — a second dataset Replied, post #13 · Research Methods › N-of-1 designs · 22 Dec 2025 · 1 like Generalisability: a robust n-of-1 result applies to you. It does not tell you much about whether the effect generalises to others similar to you, much less to people…
Revisiting: Language barriers in accessing a prescription abroad Replied, post #21 · Access › International · 22 Dec 2025 · 17 likes Picking up post #18: that is the part I would want checked first. Compounding in different countries: some countries allow pharmacy compounding under defined…
Follow-up: A supplier that answers analytical questions with restated claims Replied, post #21 · Sourcing › Red flags · 20 Dec 2025 · 1 like Rapid supplier turnover: a supplier that changes corporate structure, domain name, or contact repeatedly in short time windows raises suspicion about stability and…
Older adults, sarcopenia risk, and the trade-off nobody quantifies Replied, post #51 · Clinical › Special populations · 13 Dec 2025 · 0 likes Pancreatitis history: the compounds can rarely trigger pancreatitis. A history of pancreatitis makes monitoring for recurrence more important during titration.
Whether protein timing matters at a large deficit Replied, post #8 · Nutrition & Training › Protein & intake · 11 Dec 2025 · 0 likes Coming back to post #6, because the follow-up matters more than the original answer. Micronutrition alongside protein: eating protein foods that are also good sources…
Tracking a preprint to publication: a worked example Replied, post #74 · Evidence › Preprints · 7 Dec 2025 · 30 likes Unrefereed work is not worthless. A great deal of it survives review substantially unchanged. It is also the case that the version appearing in a journal frequently has…
Cost per delivered dose, which is the number that matters Replied, post #26 · Access › Pricing · 30 Nov 2025 · 14 likes Picking up post #23: that is the part I would want checked first. Insurance tier placement: a compound might be covered but on a higher tier (higher copay). Moving to a…
Tracking a preprint to publication: a worked example Replied, post #6 · Evidence › Preprints · 29 Nov 2025 · 2 likes Always label it as a preprint in any discussion. A preprint is not a published trial and it is not settled knowledge. Use it for hypothesis generation and for…
Robustness: the parameters worth deliberately varying Replied, post #23 · Analytics › Method validation · 26 Nov 2025 · 0 likes Transfer between laboratories: a method can be transferred from one lab to another, but the receiving lab needs to demonstrate that they can achieve the same…
How to read a forest plot, properly, from scratch Replied, post #57 · Evidence › Trials · 18 Nov 2025 · 0 likes Population narrowness: most trials in this class enrolled fairly specific groups. Baseline body mass index ranges, exclusion of renal disease, exclusion of certain…
Can a home kit substitute for a laboratory report? A careful no Replied, post #55 · Analytics › Home & field testing · 16 Nov 2025 · 0 likes Sample handling matters: if a sample is contaminated or degraded before testing, the test gives you the result for the degraded sample, not for fresh material. That is…
Pen dose counters: what a click does and does not guarantee Replied, post #39 · Devices › Pens & autoinjectors · 15 Nov 2025 · 16 likes Storage after first use: most pens can be stored at room temperature after first use, even if unrefrigerated, for a limited time (often 28 days). Check your specific…
Interpreting a result that disagrees with the supplier's certificate Replied, post #12 · Sourcing › Independent verification · 13 Nov 2025 · 8 likes When results are inconclusive: if a testing service reports "insufficient to verify" on a documentation review, that is not a negative finding about the product. It…
Reading a supplier's product description as a marketing document Replied, post #97 · Compounds › Other compounds · 12 Nov 2025 · 23 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…
The anatomy of a question that gets answered within an hour — the long version Replied, post #63 · Start Here › How to Ask · 5 Nov 2025 · 20 likes Coming back to post #61, because the follow-up matters more than the original answer. Practical note that does not fit anywhere else. Whatever you conclude from this…
Where to report an adverse event officially, by region — a second dataset Replied, post #81 · Safety › Adverse events · 1 Nov 2025 · 2 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…
Follow-up: What a seizure notice actually says Replied, post #11 · Sourcing › Logistics · 24 Oct 2025 · 29 likes I read post #9 twice before replying, because I had assumed the opposite. Documentation after arrival: photograph the parcel and its contents on arrival. If something…
Revisiting: German, French and Dutch differences, compared Replied, post #88 · Regional › European Union · 17 Oct 2025 · 3 likes I read post #86 twice before replying, because I had assumed the opposite. Two things before anyone answers the substance. First, the context in the first post is clear…
An orphaned page with no inbound links — the long version Replied, post #17 · Meta › Wiki maintenance · 11 Oct 2025 · 3 likes Maintainer handovers: if a page's maintainer is inactive and needs a new one, discussing that here can facilitate the transition.
Coming back to: Resolution and tailing factor: real acceptance criteria Replied, post #97 · Analytics › HPLC & UHPLC · 6 Oct 2025 · 13 likes Reversed-phase separates on hydrophobicity. A peptide is retained on a non-polar stationary phase and eluted by increasing organic solvent. For peptides the mobile…
Specification in the result column: why that is a meaningful error Replied, post #53 · Analytics › COA interpretation · 4 Oct 2025 · 0 likes When method identifiers are missing: "reversed-phase HPLC" is less specific than "reversed-phase HPLC at 214 nm on a C18 column with a 10 to 40% acetonitrile gradient…
Specification in the result column: why that is a meaningful error Replied, post #44 · Analytics › COA interpretation · 14 Sep 2025 · 2 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…
A preprint whose numbers changed substantially at publication — what changed since Replied, post #3 · Evidence › Preprints · 13 Sep 2025 · 28 likes What changes between preprint and publication: authors respond to reviewer comments, re-analyse data, correct errors found in peer review, and sometimes report…
Aggregated purity results across four services, with caveats — a second dataset Replied, post #113 · Data & Tools › Datasets · 10 Sep 2025 · 1 like Combining data from different sources: datasets from this site are not directly comparable to published trials because the populations are different. They are worth…
Why semaglutide solutions can look faintly opalescent and when that matters Replied, post #10 · Compounds › Semaglutide · 24 Aug 2025 · 28 likes Picking up post #7: that is the part I would want checked first. The SELECT trial changed the positioning because it was the first cardiovascular outcome trial in…
Asking about a compound your prescriber has not heard of Replied, post #127 · Clinical › Prescriber conversations · 15 Aug 2025 · 3 likes post #126 is right about the mechanism and I think understates the practical bit. I disagree with the reply above, and I think the disagreement is substantive rather…
Older adults, sarcopenia risk, and the trade-off nobody quantifies — the long version Replied, post #8 · Clinical › Special populations · 10 Aug 2025 · 12 likes post #7 answers the question as asked. The question underneath it is different. Thank you for the correction. I have edited my earlier post with a note rather than…
A ten-fold dose error caught before injection Replied, post #65 · Devices › Syringes & needles · 15 Jul 2025 · 0 likes I read post #63 twice before replying, because I had assumed the opposite. Dead volume: residual liquid in the hub and needle after withdrawal. Typical residual is 0.01…
What this community means by "a source", in practical terms Replied, post #27 · Start Here › Welcome · 7 Jul 2025 · 0 likes Picking up post #24: that is the part I would want checked first. On the reading order question specifically: start with the how-to-ask materials in this category, then…
Why plausible mechanism is not evidence of effect — one year on Replied, post #8 · Compounds › Repair & healing peptides · 7 Jul 2025 · 0 likes post #7 answers the question as asked. The question underneath it is different. Stability of BPC-157 in solution: what has been measured in published work covers…
The CagriSema phase 2 paper and what a fixed combination buys — the long version Replied, post #144 · Compounds › Cagrilintide & amylin analogues · 19 Jun 2025 · 25 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…
Specification in the result column: why that is a meaningful error Replied, post #7 · Analytics › COA interpretation · 9 Jun 2025 · 4 likes Counter-ion form is crucial: peptides are isolated as salts, most often trifluoroacetate from reversed-phase purification or acetate after salt exchange. The…
A comparison of home results against a laboratory result on the same vial Replied, post #4 · Analytics › Home & field testing · 9 Jun 2025 · 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…
Subcutaneous absorption kinetics and site differences Replied, post #7 · Pharmacology › Pharmacokinetics · 7 Jun 2025 · 18 likes Hepatic metabolism: the degree to which each compound is hepatically metabolised versus renally cleared is known but varies. Severe liver disease changes clearance.
Reading a rodent study on a secretagogue without over-extrapolating Replied, post #12 · Compounds › Secretagogues & GH axis · 4 Jun 2025 · 7 likes Picking up post #9: that is the part I would want checked first. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the…
Journal club: the CagriSema phase 2 combination paper — a second dataset Replied, post #14 · Evidence › Journal club · 24 May 2025 · 28 likes FLOW (N Engl J Med 2024): Semaglutide renal outcomes in type 2 diabetes and chronic kidney disease. Stopped early for efficacy. Component-by-component analysis is…
Pregnancy as an absolute contraindication Replied, post #89 · Safety › Contraindications · 20 May 2025 · 1 like Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing. The correction was fair and I had…
Validating a calculator against hand arithmetic — what changed since Replied, post #79 · Data & Tools › Calculators · 20 May 2025 · 6 likes The calculators maintained on this site are open-source and verifiable. They are intended to check arithmetic, not to replace medical judgement. Using them is optional…
Second pass at: Designing a personal experiment that could change your mind Replied, post #26 · Research Methods › N-of-1 designs · 19 May 2025 · 5 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.
Coming back to: Over-dilution: when your dose falls below one readable graduation Replied, post #11 · Practice › Reconstitution · 12 May 2025 · 20 likes Arithmetic step by step: a 5 mg vial with 2 mL of diluent gives (5 mg) / (2 mL) = 2.5 mg/mL. On a U-100 syringe at that concentration, 100 units = 1 mL = 2.5 mg, so…
DXA precision and the least significant change for lean mass — the long version Replied, post #25 · Outcomes › Body composition · 10 May 2025 · 1 like I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
Hepatic steatosis: what the MASH trial evidence supports Replied, post #32 · Clinical › Comorbidities · 3 May 2025 · 6 likes Hepatic steatosis and MASH: a phase 2 trial in semaglutide for steatohepatitis showed resolution was more frequent on treatment. Histological resolution is a surrogate…
Follow-up: Documentation that appears only after payment Replied, post #35 · Sourcing › Red flags · 30 Apr 2025 · 1 like 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…
A 5 mg vial and a 0.25 mg dose: the arithmetic in full — what changed since Replied, post #59 · Practice › Reconstitution · 28 Apr 2025 · 30 likes I read post #57 twice before replying, because I had assumed the opposite. Two things before anyone answers the substance. First, the context in the first post is clear…
Second pass at: Triple agonism: additive, synergistic, or neither? Replied, post #41 · Compounds › Retatrutide · 23 Apr 2025 · 26 likes post #40 answers the question as asked. The question underneath it is different. Thank you for the correction. I have edited my earlier post with a note rather than…
An orphaned page with no inbound links Replied, post #31 · Meta › Wiki maintenance · 21 Apr 2025 · 9 likes Review dates: each maintained page has a review date (the date by which it should be checked). If a page is past its review date, flagging it here alerts the maintainer.
Retatrutide dose escalation in the published trials Replied, post #144 · Compounds › Retatrutide · 17 Apr 2025 · 12 likes Picking up post #141: that is the part I would want checked first. Triple agonism: is the effect additive, synergistic, or neither? A phase 2 comparison of tirzepatide…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly Replied, post #61 · Compounds › Tirzepatide · 14 Apr 2025 · 23 likes Coming back to post #59, because the follow-up matters more than the original answer. SURPASS-2 compared tirzepatide with semaglutide 1.0 mg, the licensed diabetes dose…
A newcomer's list of things that confused me, and the fixes Replied, post #8 · Start Here › Welcome · 1 Apr 2025 · 11 likes Introducing yourself is fine and requires no question. Post in this subcategory, describe the context that matters for why you are here, and lurk for a bit before…
Carryover and the ghost peak from last week's standard Replied, post #4 · Analytics › HPLC & UHPLC · 31 Mar 2025 · 1 like On post #2 — agreed on the reasoning, with one qualification. Gradient slope is the single biggest driver of apparent purity differences. A shallower gradient over a…
Certificates issued by the seller versus by a laboratory Replied, post #16 · Analytics › COA interpretation · 24 Mar 2025 · 13 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.
Fibre intake when total intake falls, and the constipation link Replied, post #42 · Nutrition & Training › Protein & intake · 19 Mar 2025 · 0 likes post #41 answers the question as asked. The question underneath it is different. Protein supplements: whey, casein, and plant-based protein powders can help hit targets…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly Replied, post #36 · Compounds › Tirzepatide · 10 Mar 2025 · 0 likes Worth separating two things that post #32 runs together. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather…
Charge states for a 4 kDa peptide, worked through Replied, post #57 · Analytics › Mass spectrometry · 9 Mar 2025 · 17 likes Coming back to post #55, because the follow-up matters more than the original answer. Sample matrix effects: if a sample is dissolved in a complex matrix, other…
What the published dose-response for semaglutide actually looks like above 2.4 mg — a… Replied, post #71 · Compounds › Semaglutide · 20 Feb 2025 · 0 likes Semaglutide versus liraglutide in STEP 8: semaglutide produced greater weight reduction and the discontinuation rates differed. But the trial was open-label for the…
Reading a supplementary appendix and finding the interesting part Replied, post #92 · Evidence › Trials · 13 Feb 2025 · 28 likes Coming back to post #90, 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…
Consistent declarations and why they matter more than clever ones Replied, post #11 · Sourcing › Logistics · 9 Feb 2025 · 12 likes Documentation after arrival: photograph the parcel and its contents on arrival. If something later turns out wrong (damage, loss, wrong item) you have evidence of the…
What changed in 2026, by region Replied, post #100 · Access › International · 26 Jan 2025 · 32 likes Regulatory position dates: a regulatory position is only current as of when it was written. Rechecking is prudent, especially if you saw it months ago.
Second pass at: Historical amylin analogues and what happened to them Replied, post #18 · Compounds › Cagrilintide & amylin analogues · 21 Jan 2025 · 24 likes Worth separating two things that post #14 runs together. Amylin signalling is distinct from GLP-1 signalling. Amylin slows gastric emptying and promotes satiety through…
Follow-up: Dead volume across syringe and needle combinations Replied, post #98 · Devices › Syringes & needles · 11 Jan 2025 · 6 likes On post #94 — agreed on the reasoning, with one qualification. Two things before anyone answers the substance. First, the context in the first post is clear and…
Escalating every six weeks instead of four: what I observed over eight months Replied, post #14 · Practice › Dosing & titration · 10 Jan 2025 · 16 likes Stepping down deliberately: the withdrawal trials show that stopping is followed by regain. The step-down literature is thinner. The conservative assumption is that…
Isotonicity and what happens when you get it wrong Replied, post #20 · Pharmacology › Formulation chemistry · 7 Jan 2025 · 10 likes Emulsification and suspensions: some formulations are emulsions or suspensions rather than solutions. Semaglutide formulations are solutions; some other compounds are…
Why mass spectrometry cannot tell you about an epimer Replied, post #7 · Analytics › Mass spectrometry · 19 Dec 2024 · 5 likes Coming back to post #5, because the follow-up matters more than the original answer. Desalting before analysis: some samples need desalting to remove salts that…
[2026 update] How to read a forest plot, properly, from scratch Replied, post #39 · Evidence › Trials · 16 Dec 2024 · 25 likes Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing. The correction was fair and I had…
Follow-up: Tirzepatide's shorter half-life and its one practical consequence Replied, post #82 · Compounds › Tirzepatide · 11 Dec 2024 · 6 likes Mass and charge states: tirzepatide is about 4813.5 Da and on an electrospray instrument you would expect to see charge states mostly in the 2+ to 4+ range, the same as…
Follow-up: Dead volume across syringe and needle combinations Replied, post #73 · Devices › Syringes & needles · 28 Nov 2024 · 13 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…
Follow-up: Recovery when intake is low: what to cut first Replied, post #34 · Nutrition & Training › Resistance training · 20 Nov 2024 · 11 likes I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
Amylin analogue mechanism: satiety signalling separate from GLP-1 Replied, post #23 · Compounds › Cagrilintide & amylin analogues · 16 Nov 2024 · 0 likes Nausea profile of amylin analogues: the historical agent pramlintide required multiple daily doses and had a difficult tolerability profile. A weekly formulation is a…
Time to steady state after a dose increase Replied, post #85 · Pharmacology › Pharmacokinetics · 4 Nov 2024 · 14 likes Bioavailability: oral semaglutide has low bioavailability (roughly 1%) due to peptide instability. That is why the oral dose (14 mg) is so much larger than the…
Coming back to: Grapefruit: why this class is not the class that cares Replied, post #18 · Practice › Interactions · 19 Oct 2024 · 6 likes Oral medications versus time: if you take an oral medication 30 minutes before semaglutide (which slows gastric emptying), the delayed stomach emptying affects when and…
Criticising the method without criticising the authors Replied, post #3 · Evidence › Study critique · 31 Aug 2024 · 0 likes Coming back to the opening post, because the follow-up matters more than the original answer. Two things before anyone answers the substance. First, the context in the…
Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #11 · Evidence › Journal club · 6 Aug 2024 · 26 likes TRIUMPH (ongoing): Retatrutide phase 3. No results yet. Nothing should be attributed to it because it has not finished. When it does, this discussion will return to it.
Circumference measurements as a poor man's composition estimate Replied, post #44 · Outcomes › Body composition · 5 Aug 2024 · 21 likes Precision versus accuracy: the precision you need depends on what question you are answering. "Am I losing fat?" requires less precision than "Is my lean mass…
Follow-up: Conditions that change the calculus rather than forbidding it Replied, post #34 · Safety › Contraindications · 26 Jul 2024 · 2 likes Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the same compound or to structurally similar peptides warrants…
Pen wastage and its effect on real cost Replied, post #10 · Access › Pricing · 24 Jul 2024 · 16 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.
Journal club: FLOW and the renal composite, component by component Replied, post #88 · Evidence › Journal club · 17 Jul 2024 · 0 likes SOUL (N Engl J Med 2025): Oral semaglutide cardiovascular outcomes. Extends the cardiovascular evidence to the oral formulation. Note that oral bioavailability is lower…