a.ilunga

TL2 · Angers

Contributes reviews on supplier material. Based in Angers.

Joined 1 June 2025 · last posted 4d

84 posts, newest first. Showing up to 150.

Revisiting: Protein density versus volume when you cannot eat much Replied, post #99 · Nutrition & Training › Protein & intake · 24 Jul 2026 · 0 likes Post #98 answers the question as asked. The question underneath it is different. Protein supplements: whey, casein, and plant-based protein powders can help hit targets…
Immortal time bias in a claims-database study — one year on Replied, post #35 · Evidence › Study critique · 21 Jul 2026 · 1 like Placebo-controlled versus active-controlled changes what a result means entirely, and comparing across the two is one of the most common errors in this subcategory. A…
Seven-day rolling means and why weekly readings mislead Replied, post #57 · Outcomes › Progress reports · 18 Jul 2026 · 2 likes The most useful thing anyone has posted about seven-day rolling in this category was a table of what had been measured and by whom. That is what I would want again.
A site rotation scheme that is easy enough to actually follow Replied, post #118 · Practice › Administration · 18 Jul 2026 · 31 likes Worth separating two things that post #116 runs together. Pinching a fold is useful for lean tissue and unnecessary elsewhere. The point is to keep the needle out of…
Programming during a large energy deficit Replied, post #42 · Nutrition & Training › Resistance training · 17 Jul 2026 · 16 likes The reports here that state the programme, the load and the timeframe are useful. The ones that state an outcome are not.
What to bring: records that a clinician can actually use Replied, post #4 · marked as the solution · Clinical › Prescriber conversations · 16 Jul 2026 · 25 likes Bringing a record of symptoms with dates and severities makes an assessment materially easier and is the single most useful preparation.
[2026 update] Detection wavelength and why 214 nm and 280 nm disagree Replied, post #40 · Analytics › HPLC & UHPLC · 15 Jul 2026 · 6 likes The useful distinction on Detection wavelength is between what was measured and what was inferred from it. Both end up in the same sentence and only one of them has…
Deletion sequences: expected mass shifts by residue — the long version Replied, post #11 · Analytics › Impurities & related substances · 14 Jul 2026 · 1 like The reason Deletion sequences is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for the other is…
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #64 · Evidence › Journal club · 12 Jul 2026 · 9 likes I would call the community position on STEP 1 likely rather than established, and I would be comfortable defending that hedge.
Follow-up: UK access routes, dated and sourced Replied, post #11 · Regional › UK & Ireland · 12 Jul 2026 · 15 likes Coming back to post #7, because the follow-up matters more than the original answer. Cost comparisons should state whether they include the consultation, the device,…
What consumer-accessible tests can and cannot determine — a second dataset Replied, post #42 · Analytics › Home & field testing · 1 Jul 2026 · 0 likes Adding the measurement that post #39 says would settle it. I would be cautious about generalising from the consumer-accessible tests example above. It is a good…
Does dual agonism explain the effect size, or is it dose? Replied, post #69 · Compounds › Tirzepatide · 29 Jun 2026 · 5 likes SURMOUNT-4's randomised withdrawal design is the strongest available evidence about what happens on stopping. It says nothing about a lower maintenance dose, because…
Carryover and the ghost peak from last week's standard — what changed since Replied, post #76 · Analytics › HPLC & UHPLC · 26 Jun 2026 · 0 likes Coming back to post #74, because the follow-up matters more than the original answer. Method validation is the demonstration that a method can separate the compound…
A site rotation scheme that is easy enough to actually follow Replied, post #98 · Practice › Administration · 26 Jun 2026 · 0 likes A site rotation scheme that actually works: abdomen, outer thigh, back of arm, outer hip. Rotate through them in order, move a minimum 2 cm between consecutive sites,…
Named, unnamed and unspecified impurities as regulatory categories — the long version Replied, post #21 · Analytics › Impurities & related substances · 24 Jun 2026 · 1 like Post #19 describes the usual case. This is about the unusual one. Reporting thresholds matter: below a stated threshold, peaks are usually not reported at all. A…
GHRH analogues versus ghrelin mimetics: different mechanisms, conflated discussion Replied, post #28 · Compounds › Secretagogues & GH axis · 22 Jun 2026 · 0 likes GHRH analogues versus ghrelin mimetics are often conflated but they are different mechanisms. GHRH analogues (like CJC-1295) cause the pituitary to release growth…
[2026 update] A vial that will not fully dissolve: what to check and in what order Replied, post #122 · Practice › Reconstitution · 21 Jun 2026 · 4 likes Post #119 is right about the mechanism and I think understates the practical bit. Swirling versus inverting versus leaving it alone: the vial can be gently warmed…
Revisiting: What pooling buys you and what it destroys Replied, post #55 · Evidence › Meta-analyses · 15 Jun 2026 · 0 likes Everything in post #51 holds. The case it does not cover is the one I have. Study quality and weighting: some meta-analyses weight all studies equally; others weight by…
Injecting into an area that has become firm: why not to Replied, post #6 · Practice › Administration · 2 Jun 2026 · 22 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…
What to include when your question involves a chromatogram — one year on Replied, post #21 · Start Here › How to Ask · 31 May 2026 · 13 likes Picking up post #20: that is the part I would want checked first. A question about somebody else's post should be a reply to that post, not a new topic. A question the…
Follow-up: Tirzepatide and nausea: is the profile genuinely different or just… Replied, post #65 · Compounds › Tirzepatide · 19 May 2026 · 31 likes What I want from this Tirzepatide and nausea thread is the list of things that would need to be true for the claim to hold. If we can write that list, we can check it.
The most useful thing you learned here that was not the answer you came for Replied, post #38 · Lounge › Off topic · 28 Apr 2026 · 0 likes Unserious but true: I can now identify a certificate template at a glance and I have no professional use for that skill whatsoever. Adding the caveat now so it does not…
A widely repeated interaction claim that turns out to be unsupported Replied, post #49 · Practice › Interactions · 25 Apr 2026 · 23 likes Nothing here is medical advice and an interaction question is one where the cost of a wrong forum answer is genuinely high. Ask the prescriber or the pharmacist. Adding…
Stability of BPC-157 in solution: what has been measured — one year on Replied, post #31 · Compounds › Repair & healing peptides · 2 Apr 2026 · 3 likes Reported local reactions are common enough in first-hand accounts here to be worth mentioning and are not characterised in any published series. That is a description…
Oral versus injectable exposure: comparing apples to a different fruit — a second dataset Replied, post #5 · Compounds › Oral incretins · 28 Mar 2026 · 1 like What I would tell a new member reading about Oral versus injectable exposure for the first time: the confident posts are not the reliable ones, and the reliable ones…
Pinch or no pinch, and how needle length changes the answer — the long version Replied, post #33 · Practice › Administration · 19 Mar 2026 · 0 likes Pinch was covered in the wiki last year and the page has a review date on it, which is a better starting point than my memory of a thread.
The "under review" status pill and when a moderator applies it Replied, post #22 · Evidence › Preprints · 16 Mar 2026 · 0 likes Sample size and pre-registration are checkable in a preprint exactly as in a paper, and they carry the same weight.
Injection discomfort: needle gauge, volume, temperature, technique Replied, post #38 · Practice › Administration · 15 Mar 2026 · 16 likes I read post #36 twice before replying, because I had assumed the opposite. Cold solution and stinging: warming the vial in your hands for a minute before injection…
Reading a preclinical wound-healing model and its relevance to a human tendon — a second… Replied, post #19 · Compounds › Repair & healing peptides · 9 Mar 2026 · 15 likes The absence of human trials means there is no established dose, no established interval and no established duration. Protocols circulating in this space are convention…
Second pass at: Metformin co-administration and additive GI effects Replied, post #60 · Practice › Interactions · 4 Mar 2026 · 13 likes Thank you for the correction. I would rather find out here than later.
Trust level 3 requirements: a clarification — does this still hold? Replied, post #11 · Meta › Announcements · 2 Mar 2026 · 1 like Source for the Trust level 3 requirements figure, since it was asked for. It is in the discussion rather than the abstract, which is why the version circulating is…
Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #116 · Practice › Dosing & titration · 21 Feb 2026 · 3 likes The four-week escalation interval is a convention from the pivotal trials, not a pharmacological constant. The pharmacological argument is that with a week-long…
Coming back to: Time to steady state after a dose increase Replied, post #3 · Pharmacology › Pharmacokinetics · 18 Feb 2026 · 8 likes Worth separating two things that the opening post runs together. Fasting requirement for oral semaglutide: food and large fluid volumes reduce absorption. The fasting…
The most common factual error about semaglutide on the internet — what changed since Replied, post #28 · Compounds › Semaglutide · 15 Feb 2026 · 0 likes Semaglutide's structure is a modified backbone with a C18 diacid attached through a spacer. The acylation is the reason for the long half-life and it is also the reason…
Half-life, steady state, and accumulation worked through — a second dataset Replied, post #75 · Pharmacology › Pharmacokinetics · 4 Feb 2026 · 0 likes Post #74 answers the question as asked. The question underneath it is different. Albumin binding: semaglutide binds albumin through a fatty side chain, which sequesters…
Revisiting: Absolute versus relative contraindications Replied, post #13 · Safety › Contraindications · 24 Jan 2026 · 0 likes Medullary thyroid carcinoma (personal or family history) or multiple endocrine neoplasia type 2: absolute contraindication. The rodent preclinical signal is real enough…
Guidelines revision: what changed and why — one year on Replied, post #61 · Meta › Announcements · 22 Jan 2026 · 0 likes Taking post #60 at face value and following it one step further. Posting my Guidelines revision numbers with the method attached so they can be discounted properly.…
Coming back to: Pen dose counters: what a click does and does not guarantee Replied, post #3 · Devices › Pens & autoinjectors · 8 Jan 2026 · 13 likes Answering the question the opening post raises rather than the one it answers. Reading the dose window rather than the dial position is worth the habit. On several…
Prescription requirements and telehealth models Replied, post #84 · Sourcing › Regulatory · 22 Dec 2025 · 0 likes Narrowing post #83, because the general version has more than one answer. If you can confirm or contradict a position for your own region, please date the answer. An…
Early satiety becoming a problem rather than a benefit Replied, post #17 · Practice › Side effects · 18 Dec 2025 · 3 likes Adding a null result on early satiety. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.
Reading U-100 graduations, with a conversion table — one year on Started this topic · Devices › Syringes & needles · 11 Dec 2025 · 47 likes Reading U-100 graduations, with a conversion table — one year on Writing it up because I had to work it out twice and would rather nobody else did. I would like to…
Coming back to: Why most self-reports here are not experiments, and that is fine Replied, post #24 · Research Methods › N-of-1 designs · 3 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…
Price changes over 2025 and 2026, tabulated and dated — does this still hold? Replied, post #26 · Access › Pricing · 29 Nov 2025 · 0 likes The arithmetic in post #25 is right; the assumption feeding it is the part to check. On Price changes: the maintained page in the documentation commons covers the…
Robustness: the parameters worth deliberately varying Replied, post #20 · Analytics › Method validation · 25 Nov 2025 · 0 likes The limit of quantitation determines what the impurity table can honestly contain. Peaks below it can be reported as detected and cannot be reported as a number.
What pooling buys you and what it destroys Replied, post #67 · Evidence › Meta-analyses · 15 Nov 2025 · 23 likes Small correction to my own earlier position on pooling buys. I had the units the wrong way round, which changes the conclusion by an order of magnitude and therefore…
Reading SURMOUNT-1 without the press release Replied, post #56 · Compounds › Tirzepatide · 5 Nov 2025 · 2 likes Categorical response thresholds — the proportion reaching ten, fifteen or twenty per cent reduction — are more persuasive and less informative than the mean. They…
Reading an interaction checker output critically Replied, post #20 · Practice › Interactions · 11 Oct 2025 · 0 likes Two people in this thread mean different things by reading an interaction checker output and are disagreeing about the definition while believing they are disagreeing…
Follow-up: Why appetite effects are mostly central Replied, post #60 · Pharmacology › Receptor biology · 7 Oct 2025 · 0 likes Narrowing post #59, because the general version has more than one answer. GLP-1 receptor signalling: the GLP-1 receptor is expressed on beta cells (insulin secretion),…
Why catalogue breadth is not evidence of anything — what changed since Replied, post #58 · Compounds › Other compounds · 29 Sep 2025 · 7 likes Confirming post #55 from a second method, which matters more than confirming it from a second person. How to research a compound with no human data: mechanistic…
Why fasting instructions for oral semaglutide are not optional advice — does this still… Replied, post #103 · Compounds › Oral incretins · 17 Sep 2025 · 0 likes Why an oral formulation is a formulation achievement: the molecule is the same but the tablet is novel. Getting a peptide across the gastric epithelium at usable…
Aggregated purity results across four services, with caveats — a second dataset Replied, post #93 · Data & Tools › Datasets · 10 Sep 2025 · 19 likes Adding the measurement that post #92 says would settle it. Temporal bias: older data in a dataset might reflect conditions (supplier, formulation, context) that have…
Reading SURMOUNT-1 without the press release Replied, post #3 · Compounds › Tirzepatide · 5 Sep 2025 · 9 likes Categorical response thresholds — the proportion reaching ten, fifteen or twenty per cent reduction — are more persuasive and less informative than the mean. They…
What this community means by "a source", in practical terms Replied, post #89 · Start Here › Welcome · 28 Aug 2025 · 31 likes Agreed on all of that, and I have nothing to add to it.
When a preprint is the best available evidence and we say so Replied, post #64 · Evidence › Preprints · 16 Aug 2025 · 3 likes On post #60 — agreed on the reasoning, with one qualification. Screening on a preprint server is minimal and is not review. It filters obvious problems and nothing…
A ten-fold dose error caught before injection — one year on Replied, post #130 · Devices › Syringes & needles · 4 Aug 2025 · 20 likes Post #129 answers the question as asked. The question underneath it is different. Careful with the language on ten-fold dose error caught. "Not detected" and "not…
EU-wide position versus national implementation Replied, post #20 · Regional › European Union · 24 Jul 2025 · 0 likes Everything in post #16 holds. The case it does not cover is the one I have. The honest answer on eu-wide position versus national implementation is that it depends, and…
Follow-up: Why the titration planner refuses to produce a schedule below a floor Replied, post #47 · Data & Tools › Calculators · 10 Jul 2025 · 32 likes Titration planning: a calculator that shows you the escalation schedule for different starting and ending doses can help you visualize your path. Actual path might be…
A 5 mg vial and a 0.25 mg dose: the arithmetic in full — the long version Replied, post #150 · Practice › Reconstitution · 30 Jun 2025 · 16 likes Reconstituting the whole vial when you will use a quarter of it is a decision to store the rest in solution, which is the least stable state it will ever be in.…
Why the timeline is on the right and not the left Replied, post #34 · Meta › Site feedback · 28 Jun 2025 · 0 likes Feedback on the trust-level page: it explains what each level unlocks, and not what a member at that level is expected to do differently. The second is what people…
[2026 update] Clearance pathways and what renal impairment changes Replied, post #39 · Pharmacology › Pharmacokinetics · 10 Jun 2025 · 16 likes Worth separating two things that post #37 runs together. My understanding of Clearance pathways is a few years old and may have been superseded. If it has been, I would…
Regression to the mean in progress reports Replied, post #16 · Research Methods › Statistics · 3 Jun 2025 · 1 like The arithmetic in post #15 is right; the assumption feeding it is the part to check. Number needed to treat: how many people need to be treated to prevent one bad…
Reading a trial's population section before its results — does this still hold? Replied, post #135 · Evidence › Trials · 23 May 2025 · 15 likes I had written a reply contradicting post #131 and deleted it. Here is what survived. Multiplicity and multiple comparisons: if a trial tests many hypotheses, the chance…
Travel coolers and how long they really hold — the long version Replied, post #6 · Devices › Cold chain · 19 May 2025 · 2 likes Speaking only to Travel coolers as I have actually seen it, rather than as it is usually described: the effect is real, it is smaller than the thread suggests, and the…
Comparators chosen for regulatory reasons rather than clinical ones — one year on Replied, post #29 · Evidence › Trials · 13 May 2025 · 0 likes On post #27 — agreed on the reasoning, with one qualification. Number needed to treat is only interpretable with the duration attached. The same NNT over one year and…
Relative retention time as a better inter-laboratory comparator Replied, post #6 · Analytics › Method validation · 2 May 2025 · 29 likes Peak purity assessment using a diode-array detector checks whether a peak is spectrally homogeneous. It is a weak test and it is better than not looking.
Adducts: sodium, potassium, and the peak you did not expect Replied, post #47 · Analytics › Mass spectrometry · 27 Mar 2025 · 0 likes Adducts is worth one more sentence than it usually gets, and the sentence is the one about how the number was arrived at.
Journal club: SURMOUNT-1, read without the press release Replied, post #78 · Evidence › Journal club · 16 Mar 2025 · 2 likes Answering the question post #74 raises rather than the one it answers. Nobody has said the unglamorous part of SURMOUNT-1 yet, so: most of the variation is explained by…
Follow-up: What other technical communities get right that we do not Replied, post #32 · Lounge › Off topic · 6 Mar 2025 · 17 likes Lounge-level thought to close on: the measure of this place is that being wrong in public here is cheap. That is a design decision and it took work. It is worth stating…
Protein density versus volume when you cannot eat much Replied, post #47 · Nutrition & Training › Protein & intake · 31 Jan 2025 · 19 likes Fine by me. I had wanted a stronger conclusion and there is not one available.
Reconstituting a multi-strength kit without mixing yourself up Replied, post #27 · Practice › Reconstitution · 30 Jan 2025 · 26 likes Saving this. It is the version I will quote when the question comes round again.
Canadian access and provincial variation Replied, post #20 · Regional › North America · 25 Jan 2025 · 26 likes Regional variation in North America: access differs substantially by US state and Canadian province. Postcode is a major determinant of access.
Recovery when intake is low: what to cut first Replied, post #61 · Nutrition & Training › Resistance training · 13 Jan 2025 · 4 likes Frequency: three sessions per week of full-body training is easier to maintain than higher frequencies on an energy deficit. Consistency beats intensity when recovery…
When to suspect the method rather than the sample Replied, post #65 · Analytics › Method validation · 13 Jan 2025 · 32 likes Range: the concentration range over which the method has been validated. Going outside the validated range is going outside the method's demonstrated performance.
Oral semaglutide bioavailability and its variability between people — a second dataset Replied, post #153 · Compounds › Oral incretins · 29 Dec 2024 · 0 likes Dose equivalence between oral and injectable formulations is not a simple conversion and no published factor should be used as one. The two were developed and titrated…
Molecular mass of semaglutide and why the figure differs between sources — does this… Replied, post #73 · Compounds › Semaglutide · 23 Dec 2024 · 1 like Solutions of semaglutide can look faintly opalescent without anything being wrong. Visible particulate, fibres or frank cloudiness are a different observation entirely…
Second pass at: A field-by-field walk through a certificate of analysis Replied, post #157 · Analytics › COA interpretation · 19 Dec 2024 · 8 likes When a document puts the specification in the result column, it has told you the release criterion, not the measurement. Those are different claims and the second is…
[2026 update] Step therapy requirements and how to satisfy them Replied, post #71 · Access › Insurance & coverage · 15 Dec 2024 · 0 likes Formulary status: the list of covered medications and the tier (how much you pay) they are on. Checking the current formulary before going to a clinic appointment saves…
Injection-site reactions: describing them precisely enough to be useful Replied, post #39 · Practice › Side effects · 1 Dec 2024 · 25 likes Confirming post #36 from a second method, which matters more than confirming it from a second person. If you are new and reading this thread for the answer to…
Type 1 diabetes: off-label use and the evidence gap — what changed since Replied, post #17 · Clinical › Special populations · 20 Nov 2024 · 26 likes I have three months of notes on Type 1 diabetes and the honest summary is that the trend is real and the week-to-week numbers are noise. I nearly drew the opposite…
EMA product information as a primary source — does this still hold? Replied, post #61 · Regional › European Union · 16 Nov 2024 · 11 likes Regional stock held inside the union removes a customs question entirely for intra-union movement, which is a practical difference rather than a legal opinion.
Tracking semaglutide's approved indications across jurisdictions, dated — does this… Replied, post #21 · Compounds › Semaglutide · 11 Nov 2024 · 22 likes The oral formulation is a genuinely different pharmaceutical problem from the injectable and shares only the active molecule. Absorption enhancers, fasting requirements…
Coming back to: Research-use-only labelling: what it means and what it does not Replied, post #18 · Sourcing › Regulatory · 1 Nov 2024 · 3 likes My understanding of Research-use-only labelling is a few years old and may have been superseded. If it has been, I would genuinely like to know rather than keep…
Reporting a discrepancy without making an allegation Replied, post #49 · Sourcing › Vendor reports · 30 Aug 2024 · 0 likes The bit of reporting a discrepancy that nobody enjoys is that the answer changes depending on what you are trying to decide with it. Say what the decision is and the…
Second pass at: Journal club: LEADER as the historical anchor Replied, post #4 · Evidence › Journal club · 6 Jul 2024 · 0 likes Saving this. It is the version I will quote when the question comes round again.