s.stavrianos

TL2 Member · Winnipeg, CA

Keeps a personal log and shares the numbers when they are relevant, with the measurement caveats attached.

Joined 21 March 2025 · last posted 2d

86 posts, newest first. Showing up to 150.

Follow-up: The retatrutide phase 2 obesity paper, read closely Replied, post #24 · Compounds › Retatrutide · 26 Jul 2026 · 5 likes Post #23 is the version of this I will quote in future. One addition. Dose-response in the phase 2 obesity work was clear across the studied range, with no obvious…
[2026 update] Documenting an adverse event properly Replied, post #21 · Safety › Adverse events · 25 Jul 2026 · 28 likes Reporting to regulatory agencies: if you have had a serious event, reporting it to the regulatory agency in your country can help with signal detection across the…
CJC-1295 with and without DAC: what the modification does Replied, post #117 · Compounds › Secretagogues & GH axis · 20 Jul 2026 · 11 likes The practical version of CJC-1295 is three sentences long. The rigorous version is three pages and reaches the same conclusion with the conditions attached.
Forced degradation studies: designing one that is informative Replied, post #96 · Analytics › Method validation · 11 Jul 2026 · 0 likes Nobody has said the unglamorous part of forced degradation studies yet, so: most of the variation is explained by things that are boring to write about and easy to check.
Follow-up: Sleep quality changes during weight loss Replied, post #66 · Wellbeing › Sleep · 10 Jul 2026 · 0 likes Gastrointestinal effects overnight: nausea or reflux or constipation at night can disrupt sleep. Dosing timing (morning versus evening) might help if nighttime GI…
Revisiting: What pooling buys you and what it destroys Replied, post #75 · Evidence › Meta-analyses · 1 Jul 2026 · 24 likes Reframing pooling buys slightly, because I think the disagreement is about the question rather than the answer. If the question is "does it happen", yes. If it is "how…
Personal or family history of medullary thyroid carcinoma — what changed since Replied, post #77 · Safety › Contraindications · 17 Jun 2026 · 0 likes Coming back to post #75, because the follow-up matters more than the original answer. Allergy to the specific compound: true allergy is rare but possible. Any prior…
Second pass at: Programming during a large energy deficit Replied, post #30 · Nutrition & Training › Resistance training · 16 Jun 2026 · 26 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…
Why this subcategory is stricter about sourcing than most Replied, post #42 · Compounds › Secretagogues & GH axis · 13 Jun 2026 · 2 likes Where I part company with post #40, and it is a narrow parting. Storage: these are lyophilised short peptides and are generally reasonably stable dry and considerably…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Started this topic · Sourcing › Independent verification · 3 Jun 2026 · 38 likes On the subject in the title: Interpreting a result that disagrees with the supplier's certificate Working notes rather than a conclusion. Structured report rather than…
GLP-1 receptor distribution: central and peripheral Replied, post #58 · Pharmacology › Receptor biology · 28 May 2026 · 0 likes Central versus peripheral action: GLP-1 agonism works through both central nervous system effects (appetite) and peripheral effects (gastric motility, insulin). The…
Why the titration planner refuses to produce a schedule below a floor Replied, post #77 · Data & Tools › Calculators · 23 May 2026 · 3 likes Dose equivalence calculator: compounds have different potencies. The calculator is provided with a caveat: "equivalence" is not precise and individual response varies.…
Stability of BPC-157 in solution: what has been measured — one year on Replied, post #58 · Compounds › Repair & healing peptides · 22 May 2026 · 17 likes The arithmetic in post #55 is right; the assumption feeding it is the part to check. Where I would push back on the Stability of BPC-157 consensus is the confidence,…
A widely repeated interaction claim that turns out to be unsupported — what changed since Replied, post #47 · Practice › Interactions · 20 May 2026 · 12 likes The thing about widely repeated interaction claim that took me longest to accept is that a plausible mechanism is not evidence of an effect. It is a reason to look, not…
Official shortage notices and what they authorise Replied, post #34 · Access › Shortages · 5 May 2026 · 0 likes The arithmetic in post #31 is right; the assumption feeding it is the part to check. Reading this official shortage notices thread as someone who came in with a fixed…
[2026 update] Charge states for a 4 kDa peptide, worked through Replied, post #123 · Analytics › Mass spectrometry · 28 Apr 2026 · 21 likes The arithmetic for a doubly charged species is (M + 2 x 1.00728) / 2, and the analogous expression for higher charge states. Working it through once makes the reported…
Injection discomfort: needle gauge, volume, temperature, technique Replied, post #54 · Practice › Administration · 20 Apr 2026 · 19 likes Post #50 describes the usual case. This is about the unusual one. Subcutaneous injection into abdominal tissue, thigh or upper arm is what the licensed labelling in…
Revisiting: Absolute versus relative contraindications Replied, post #68 · Safety › Contraindications · 17 Apr 2026 · 0 likes Picking up post #66: that is the part I would want checked first. Small correction to my own earlier position on Absolute versus relative contraindications. I had the…
Adolescents: a distinct evidence base — one year on Replied, post #87 · Clinical › Special populations · 16 Apr 2026 · 2 likes The arithmetic in post #84 is right; the assumption feeding it is the part to check. Adolescents: a distinct evidence base exists. The compounds are not approved for…
Spike-and-recover accuracy for a peptide assay Replied, post #112 · Analytics › Method validation · 10 Apr 2026 · 6 likes Small methodological point on spike-and-recover accuracy: repeating a measurement is cheap and resolves most of what is being argued about here at no cost to anyone.
Reference intervals: how they are constructed and why one in twenty flags Replied, post #60 · Clinical › Bloodwork · 6 Mar 2026 · 0 likes Clear enough that I do not think I have a follow-up, which is unusual.
Realistic expectations for strength while losing weight quickly Replied, post #68 · Nutrition & Training › Resistance training · 5 Mar 2026 · 9 likes Where somebody is losing strength rapidly, the first questions are intake, sleep and total training volume, in that order. If the premise is wrong, everything after it…
Follow-up: Search filters: what is missing Replied, post #38 · Meta › Site feedback · 21 Feb 2026 · 28 likes Community norms: if you think a norm has drifted or is not being followed consistently, raising it here can prompt discussion and realignment. The uncertainty is in the…
Journal club: orforglipron phase 2 and the non-peptide question Replied, post #3 · Evidence › Journal club · 18 Feb 2026 · 0 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.…
Mass error in ppm: the arithmetic and the caveat Replied, post #71 · Analytics › Mass spectrometry · 14 Feb 2026 · 2 likes Taking post #68 at face value and following it one step further. Sample preparation for mass spectrometry can itself introduce modifications, particularly oxidation. A…
Revisiting: Review: an evidence digest and the citation check that delayed it Replied, post #57 · Documentation › Doc review · 5 Feb 2026 · 10 likes I would rather this thread reach "we do not know" about evidence digest than reach a confident answer that nobody can support when asked.
Coming back to: Semaglutide in people without diabetes: what the evidence base looks like Replied, post #29 · Compounds › Semaglutide · 3 Feb 2026 · 0 likes Useful. I had the fact and not the reason, which turns out to be the important half.
EU-wide position versus national implementation — what changed since Replied, post #15 · Regional › European Union · 1 Feb 2026 · 2 likes The centralised authorisation covers the union and national access decisions do not. That distinction accounts for most of the apparent contradictions in this…
Trifluoroacetate content and its consequences Replied, post #62 · Analytics › Impurities & related substances · 1 Feb 2026 · 19 likes Sensible. I would want the same detail before I acted on it either.
Can a home kit substitute for a laboratory report? A careful no Replied, post #122 · Analytics › Home & field testing · 31 Jan 2026 · 0 likes A control sample of known material run alongside is what turns a home test from an impression into a comparison. Without one you are calibrating against memory. Take it…
[2026 update] Evidence quality in the secretagogue literature: an honest assessment Replied, post #11 · Compounds › Secretagogues & GH axis · 15 Jan 2026 · 11 likes Research-use-only secretagogues are not approved for human use. That statement is doing real work in this subcategory, where the published evidence base is thinner than…
Storing lyophilised material long term: what governs the shelf life Replied, post #18 · Practice › Storage & stability · 7 Jan 2026 · 8 likes Picking up post #15: that is the part I would want checked first. Visible particulate is a strong signal in the other direction: it is a reason to stop and ask rather…
Coming back to: Payment mechanics and the recovery options that do not exist Replied, post #2 · Sourcing › Payments · 6 Dec 2025 · 0 likes Following, with nothing to contribute beyond having asked the same thing elsewhere.
MHRA statements, read directly Replied, post #39 · Regional › UK & Ireland · 28 Nov 2025 · 15 likes This follows post #36 rather than contradicting it. Importing for personal use: importing a prescription-only medicine without a prescription is not lawful. Material…
Why semaglutide solutions can look faintly opalescent and when that matters Replied, post #38 · Compounds › Semaglutide · 26 Nov 2025 · 31 likes Coming back to post #36, because the follow-up matters more than the original answer. On the "does it stop working" question: tolerance in the pharmacological sense is…
[2026 update] Long-time reader, first-time poster Replied, post #22 · Lounge › Introductions · 2 Nov 2025 · 0 likes An honest declaration on Long-time reader: I have a prior here and it is strong enough that you should weight what I say downward. Stating it rather than hiding it.
Journal club: how we handle discontinuation in obesity trials — what changed since Replied, post #13 · Evidence › Journal club · 29 Oct 2025 · 1 like Reading order that works for these sessions: registry entry, methods, baseline table, primary result, then abstract last. Reading the abstract first anchors everything…
How the published trials escalated, tabulated side by side — does this still hold? Replied, post #3 · Practice › Dosing & titration · 28 Oct 2025 · 30 likes Narrowing post #2, because the general version has more than one answer. Reaching a dose and staying there for a year: the question of whether a stable dose remains…
Anxiety in the first weeks: drug, situation, or both — what changed since Replied, post #38 · Wellbeing › Mental health · 16 Oct 2025 · 26 likes When to involve a professional: if mood changes are persistent, deepen over weeks, or interfere with function, involving a mental health professional is appropriate.…
What happens after your first post: likes, trust levels, and why none of it matters much… Replied, post #38 · Start Here › Welcome · 15 Oct 2025 · 0 likes Do not feel obliged to reply to every reply on your own topic. A single "that answered it" and a marked solution is the most useful thing you can do for the next person…
New subcategory: rationale and scope Replied, post #9 · Meta › Announcements · 12 Oct 2025 · 3 likes Post #6 is the version of this I will quote in future. One addition. RSS: if you prefer to receive announcements by feed rather than visiting the site, RSS is available…
Airline travel with a temperature-sensitive injectable Replied, post #5 · Devices › Cold chain · 30 Sep 2025 · 3 likes I have no financial interest in anything named in this thread and I want to say so before I comment on airline travel, because it is the sort of subject where it matters.
Detection wavelength and why 214 nm and 280 nm disagree Replied, post #55 · Analytics › HPLC & UHPLC · 28 Sep 2025 · 11 likes If two laboratories disagree by more than two or three percentage points, work through method, integration, sample handling, whether it was the same lot and the same…
Second pass at: Triple agonism: additive, synergistic, or neither? Replied, post #115 · Compounds › Retatrutide · 22 Sep 2025 · 0 likes Two people in this thread mean different things by Triple agonism and are disagreeing about the definition while believing they are disagreeing about the facts. Worth…
Tracking that stops updating and then resumes — the long version Replied, post #13 · Sourcing › Logistics · 9 Sep 2025 · 6 likes Tracking stops updating: tracking last updated days ago usually means the package is in transit and will not update until it reaches the next scanning point. No update…
[2026 update] Journal club: is percentage weight change the right endpoint? Replied, post #57 · Evidence › Journal club · 18 Aug 2025 · 15 likes Everything in post #53 holds. The case it does not cover is the one I have. Reading order that works for these sessions: registry entry, methods, baseline table,…
Are there stupid questions here? A staff answer, at length Replied, post #81 · Start Here › Welcome · 17 Aug 2025 · 26 likes Reading back through, this was answered upthread and I missed it. My fault.
Thyroid function tests during substantial weight change Replied, post #29 · Clinical › Bloodwork · 13 Aug 2025 · 25 likes Repeat before acting is standard practice for an isolated abnormal result on most analytes, and it is standard for a reason. I have changed my mind on this once…
Are there stupid questions here? A staff answer, at length Replied, post #64 · Start Here › Welcome · 12 Aug 2025 · 0 likes There is no stupid-questions rule and no penalty for asking badly. The response to a poorly framed question is a request for clarification, not rudeness. That is a…
Revisiting: Reading a denial letter as a specification for your appeal Replied, post #75 · Access › Insurance & coverage · 10 Aug 2025 · 12 likes The question underneath Reading a denial letter is usually "how would I tell?" rather than "what is true?", and that one has a method attached to it. Write down what…
TB-500 and thymosin beta-4: the fragment versus the protein Replied, post #94 · Compounds › Repair & healing peptides · 7 Aug 2025 · 0 likes Worth separating two things that post #92 runs together. An honest declaration on TB-500 and thymosin beta-4: I have a prior here and it is strong enough that you…
Journal club: indirect comparison between two programmes, defended and attacked — one… Replied, post #18 · Evidence › Journal club · 2 Jul 2025 · 0 likes I would put moderate confidence on the mainstream reading of indirect comparison and no more. That is not scepticism for its own sake; it is where the sourcing actually…
Reading an MS report that only gives you a single number Replied, post #113 · Analytics › Mass spectrometry · 20 Jun 2025 · 6 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…
Coming back to: When "no data" is the complete and final answer Replied, post #13 · Compounds › Other compounds · 14 Jun 2025 · 12 likes Storage guidance for the less common material is usually copied from the incretin guidance and may not apply. Where the supplier has its own stability statement, that…
Comparators chosen for regulatory reasons rather than clinical ones — one year on Replied, post #49 · Evidence › Trials · 10 Jun 2025 · 0 likes Confounding in observational data: a third variable can explain an apparent association. In a randomised trial, randomisation balances unknown confounders. In…
Pre-registering a personal experiment, seriously Replied, post #4 · Research Methods › N-of-1 designs · 25 May 2025 · 0 likes A single-person experiment can be genuinely informative if it has a pre-specified outcome, a defined period, and a plan written before the data arrives. Most accounts…
Pregnancy as an absolute contraindication Replied, post #26 · Safety › Contraindications · 17 May 2025 · 15 likes The arithmetic in post #23 is right; the assumption feeding it is the part to check. Somebody's condition being on a list does not settle the decision, and somebody's…
Airline travel with a temperature-sensitive injectable — what changed since Replied, post #25 · Devices › Cold chain · 8 May 2025 · 22 likes Airline travel 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.
Why pulsatile secretion matters for interpreting secretagogue claims — a second dataset Replied, post #64 · Compounds › Secretagogues & GH axis · 4 May 2025 · 0 likes Confirming post #63 from a second method, which matters more than confirming it from a second person. Injection-site reactions are reported more often in this family…
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ Replied, post #29 · Sourcing › Independent verification · 30 Apr 2025 · 14 likes The record shows what was measured. Everything beyond that is inference and this site tries to keep the line visible. Genuinely open to being wrong about this one.
What SELECT changed about how semaglutide is discussed, and what it did not Replied, post #81 · Compounds › Semaglutide · 17 Apr 2025 · 15 likes Post #78 is right about the mechanism and I think understates the practical bit. Semaglutide versus liraglutide in STEP 8: semaglutide produced greater weight reduction…
Introducing myself and asking whether my planned first topic belongs anywhere Replied, post #19 · Start Here › Welcome · 19 Mar 2025 · 0 likes Reading rather than contributing, but this is the most useful thread I have found on it.
One lot is one lot: when a report becomes a pattern — the long version Replied, post #136 · Sourcing › Vendor reports · 19 Mar 2025 · 0 likes Reports of ordinary results are more valuable than reports of remarkable ones, precisely because only the remarkable ones get posted elsewhere.
Research-use-only status: what it means legally and practically — a second dataset Replied, post #114 · Compounds › Other compounds · 14 Mar 2025 · 1 like Adding the measurement that post #111 says would settle it. Why catalogue breadth is not evidence of anything: a supplier listing 500 compounds does not make the 450…
Scheduled maintenance and what will be unavailable Replied, post #72 · Meta › Announcements · 14 Mar 2025 · 1 like Everything in post #70 holds. The case it does not cover is the one I have. Scheduled maintenance looks different depending on whether you are reading the primary…
Transit times by route, from a logged dataset — the long version Replied, post #67 · Sourcing › Logistics · 6 Mar 2025 · 7 likes Post #66 answers the question as asked. The question underneath it is different. Something worth flagging about Transit times: the strongest-sounding claims in this…
Pharmaceutical compounding rules, summarised from primary sources Replied, post #33 · Sourcing › Regulatory · 28 Feb 2025 · 16 likes Pharmaceutical compounding rules has been discussed here with more heat than it deserves, mostly because two definitions have been in play the whole time.
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #102 · Data & Tools › Calculators · 23 Feb 2025 · 26 likes Post #100 describes the usual case. This is about the unusual one. Storage lookup: which conditions (temperature, time) are you considering storing in, and how much…
Adjudicated events and why the definition matters — the long version Replied, post #16 · Evidence › Trials · 19 Feb 2025 · 0 likes A treatment-policy estimand asks what happens to people assigned to a strategy, including those who abandon it. A hypothetical estimand asks what would have happened…
Second pass at: Regression to the mean in progress reports Replied, post #56 · Research Methods › Statistics · 15 Feb 2025 · 0 likes Post #52 and I disagree about the size of the effect, not about the direction. One caution on Regression: everything above assumes the underlying documentation is what…
Follow-up: What other technical communities get right that we do not Replied, post #17 · Lounge › Off topic · 14 Feb 2025 · 0 likes Newer drugs and mechanisms: when a new drug launches or a new mechanism is discovered, the Lounge is a place to discuss the news and speculate before hard data exists.
Coming back to: Reading a meta-analysis you disagree with, fairly Replied, post #32 · Evidence › Meta-analyses · 11 Feb 2025 · 0 likes Subgroup analysis: sometimes a meta-analysis reports separate pooled estimates for different subgroups (e.g., by baseline body mass index or by trial duration). Be…
Protein density versus volume when you cannot eat much Replied, post #81 · Nutrition & Training › Protein & intake · 6 Feb 2025 · 0 likes Micronutrient adequacy becomes a real question at very low total intake and is much less discussed than protein.
[2026 update] Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #112 · Evidence › Journal club · 1 Feb 2025 · 17 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…
Checking someone else's arithmetic: a worked example thread Replied, post #18 · Practice › Reconstitution · 30 Jan 2025 · 0 likes Concentration is total mass divided by total volume, and everything else follows from that. Ten milligrams into two millilitres is five milligrams per millilitre, and…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #71 · Data & Tools › Calculators · 30 Jan 2025 · 9 likes Mass error checking: enter your observed mass and theoretical mass and check whether the difference in ppm is within reasonable bounds for your instrument. Useful…
Recovery when intake is low: what to cut first Replied, post #41 · Nutrition & Training › Resistance training · 12 Jan 2025 · 0 likes Nothing here is medical advice and anybody with a relevant condition should have a programme reviewed by somebody qualified rather than assembled from a forum. It cost…
Coming back to: Recording a dissent on a document rather than suppressing it Replied, post #23 · Documentation › Doc review · 9 Jan 2025 · 7 likes A document that repeats a paragraph already maintained elsewhere should link instead, unless the reader would be mid-task and unable to follow a link. Anyone with a…
A page that has drifted out of date and needs a maintainer Replied, post #32 · Documentation › Wiki requests · 24 Nov 2024 · 7 likes Objections to a request belong in the open, and a request that survives an objection is a stronger page for it. Somebody will have a better source than mine, and I hope…
Injection-site reactions: describing them precisely enough to be useful Replied, post #16 · Practice › Side effects · 21 Nov 2024 · 29 likes Worth separating two things that post #12 runs together. Nobody has said the unglamorous part of injection-site reactions yet, so: most of the variation is explained by…
EMA product information as a primary source — does this still hold? Replied, post #140 · Regional › European Union · 18 Nov 2024 · 22 likes Confirming post #137 from a second method, which matters more than confirming it from a second person. EMA is the regulator with national implementation. Licensed…
Choosing which test to pay for, given a fixed budget — does this still hold? Replied, post #22 · Sourcing › Independent verification · 6 Nov 2024 · 8 likes Taking post #21 at face value and following it one step further. Repeat testing: if you want to verify the same lot a second time, testing with a different service…
Blind submission and why it changes minds Replied, post #90 · Sourcing › Independent verification · 17 Oct 2024 · 0 likes The arithmetic in post #89 is right; the assumption feeding it is the part to check. Two questions I would want answered before drawing anything from the blind…
PIONEER 6 cardiovascular safety, read as a safety trial rather than an efficacy one —… Replied, post #22 · Compounds › Oral incretins · 19 Sep 2024 · 11 likes Timing consistency matters more for oral dosing than for weekly injection, because absorption depends on the state of the stomach and the state of the stomach varies…
Why a preprint's supplementary material is often the best part Replied, post #18 · Evidence › Preprints · 10 Sep 2024 · 0 likes I had written a reply contradicting post #16 and deleted it. Here is what survived. Reading a preprint properly means doing some of the reviewer's job: methods first,…
Coming back to: Pricing far outside the range, in either direction Replied, post #12 · Sourcing › Red flags · 26 Jul 2024 · 4 likes Nothing here should be read as an accusation against a named company, and the guidelines exist so that reports remain reports. Reading it back, the second half matters…