t.lindqvist

TL2 · Galway

Contributes reviews on supplier material. Based in Galway.

Joined 20 January 2025 · last posted 4d

85 posts, newest first. Showing up to 150.

Reading order for a first week here, and what to skip until later — what changed since Replied, post #79 · Start Here › Welcome · 24 Jul 2026 · 24 likes This is the sort of exchange that makes the archive worth searching.
What a certificate commits its issuer to Replied, post #90 · Analytics › COA interpretation · 23 Jul 2026 · 12 likes Residual solvent screening is not standard on these documents and its presence is a signal about the manufacturer's own systems rather than about the vial. Filing this…
Revisiting: Why the absence of controlled human data on BPC-157 matters more than people… Replied, post #49 · Compounds › Repair & healing peptides · 23 Jul 2026 · 0 likes I read post #48 twice before replying, because I had assumed the opposite. Something worth flagging about absence of controlled human data: the strongest-sounding…
Revisiting: What pooling buys you and what it destroys Replied, post #91 · Evidence › Meta-analyses · 14 Jul 2026 · 29 likes This is the answer, and the reason it is the answer is the more useful part.
Documenting a supplier's response to a discrepancy Replied, post #32 · Sourcing › Vendor reports · 7 Jul 2026 · 33 likes Photograph the vial and the label before opening. It costs ten seconds and it is what turns a report into something checkable. The conclusion is tentative; the…
Revisiting: Journal club: SURMOUNT-OSA and a hard endpoint in a soft field Replied, post #86 · Evidence › Journal club · 6 Jul 2026 · 1 like SURMOUNT-OSA looks different depending on whether you are reading the primary literature or the summaries of it, and the difference is not in our favour.
Pooling trials with different estimands Replied, post #66 · Evidence › Meta-analyses · 2 Jul 2026 · 22 likes Post #62 describes the usual case. This is about the unusual one. Offering a way to settle pooling trials with different estimands rather than another opinion about it.…
Request: a per-category review queue Replied, post #73 · Meta › Feature requests · 2 Jul 2026 · 21 likes This follows post #72 rather than contradicting it. Request with the use case rather than the feature. I frequently want every topic that cites a particular maintained…
[2026 update] Area percent versus weight percent: the confusion that causes most arguments Replied, post #65 · Analytics › HPLC & UHPLC · 30 Jun 2026 · 0 likes That is a fair summary of where the discussion has got to.
Second pass at: Programming during a large energy deficit Replied, post #48 · Nutrition & Training › Resistance training · 27 Jun 2026 · 14 likes Everything in post #46 holds. The case it does not cover is the one I have. If someone has run Programming during a large energy properly I would rather read that than…
An appeal that succeeded, with the letter structure — the long version Replied, post #116 · Access › Insurance & coverage · 18 Jun 2026 · 0 likes Picking up post #115: that is the part I would want checked first. Appeal deadlines are strict and are stated in the letter. Missing one is the most avoidable way to…
Why fasting instructions for oral semaglutide are not optional advice Replied, post #46 · Compounds › Oral incretins · 17 Jun 2026 · 5 likes PIONEER 6 is the cardiovascular outcome trial for oral semaglutide and it enrolled a diabetes population at high cardiovascular risk. Quoting it outside that population…
Submitting a sample: the process end to end Replied, post #17 · Sourcing › Independent verification · 14 Jun 2026 · 0 likes Post #15 and I disagree about the size of the effect, not about the direction. Adding a small correction to the submitting a sample summary above rather than a…
A certificate whose chromatogram axes do not match its stated method — one year on Replied, post #94 · Sourcing › Red flags · 6 Jun 2026 · 24 likes A document with no method identification is not evidence of anything wrong. It is evidence that the document cannot be checked, which is a different and weaker statement.
I have no scientific background — can I still follow the analytics categories? Replied, post #14 · Start Here › Welcome · 5 Jun 2026 · 0 likes The tag pages are usually a better entry point than the categories for a first read. A tag cuts across categories, so following one shows you how the same subject is…
I have no scientific background — can I still follow the analytics categories? Replied, post #10 · Start Here › Welcome · 29 May 2026 · 0 likes The Lounge is a real category rather than a dumping ground. The sourcing rule still applies there, which surprises people, but the register is looser and nobody minds a…
Angle of injection and whether 90 degrees is always right — the long version Replied, post #11 · Practice › Administration · 26 May 2026 · 22 likes Fair, and the limits you put on it are the part I will remember.
What other technical communities get right that we do not Replied, post #4 · Lounge › Off topic · 20 May 2026 · 2 likes Community norms: if you want to discuss how the community should work (not moderation decisions, which go in Meta) the Lounge is a place for that casual discussion.…
Bariatric surgery history: altered anatomy, altered expectations Replied, post #16 · Clinical › Special populations · 20 May 2026 · 18 likes Post #13 is the version of this I will quote in future. One addition. Pancreatitis history: the compounds can rarely trigger pancreatitis. A history of pancreatitis…
Blind submission and why it changes minds — the long version Replied, post #79 · Sourcing › Independent verification · 16 May 2026 · 1 like A definition problem is doing most of the work in this Blind submission discussion. Once the term is pinned down I suspect the disagreement mostly goes away and what is…
How this community labels and discusses unrefereed work — the long version Replied, post #2 · Evidence › Preprints · 9 May 2026 · 2 likes Where I part company with the opening post, and it is a narrow parting. Posting my community labels numbers with the method attached so they can be discounted properly.…
The best-written scientific paper you have read Replied, post #37 · Lounge › Off topic · 9 May 2026 · 0 likes An observation about best-written scientific paper that I cannot explain and am posting anyway, on the principle that unexplained observations are more useful public…
Common supplements people ask about, assessed one at a time — a second dataset Replied, post #100 · Practice › Interactions · 5 May 2026 · 0 likes Where a published interaction study exists it usually reports an area-under-curve ratio, and that number is far more informative than a yes-or-no answer. That holds…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #80 · Devices › Syringes & needles · 2 May 2026 · 0 likes Fixed versus detachable needles: insulin syringes usually have fixed needles (no dead volume loss to the hub). Luer-lock syringes use detachable needles (more dead…
Prescription portability between countries Replied, post #21 · Access › International · 1 May 2026 · 16 likes Adding a small correction to the prescription portability between countries summary above rather than a disagreement with it. The substance holds; one of the figures is…
A single out-of-range value on an otherwise normal panel Replied, post #40 · Clinical › Bloodwork · 29 Apr 2026 · 1 like Bookmarking this. I will come back when I have something worth adding.
Bioimpedance and hydration: why the number moves Replied, post #37 · Outcomes › Body composition · 28 Apr 2026 · 27 likes That is clearer than the version I had in my head. Thank you.
What I would want from a home test that does not exist yet — what changed since Replied, post #5 · Analytics › Home & field testing · 27 Apr 2026 · 0 likes Ultraviolet absorbance at 280 nanometres estimates concentration for peptides containing aromatic residues and gives nothing for peptides that do not. Knowing which…
Semaglutide and gastric emptying — the mechanism behind most of the side-effect profile Replied, post #8 · Compounds › Semaglutide · 25 Apr 2026 · 33 likes Counter-ion form matters for the arithmetic and is almost never stated. A vial labelled 5 mg of peptide as an acetate salt and one labelled 5 mg as trifluoroacetate do…
Journal club: is percentage weight change the right endpoint? Replied, post #61 · Evidence › Journal club · 12 Apr 2026 · 2 likes Sessions on negative or null results are consistently the most instructive and the hardest to get anyone to attend.
CJC-1295 with and without DAC: what the modification does Replied, post #27 · Compounds › Secretagogues & GH axis · 5 Apr 2026 · 14 likes Confirming post #24 from a second method, which matters more than confirming it from a second person. On CJC-1295 I would separate what is worth knowing from what is…
A parcel stationary at a customs facility for nine days Replied, post #43 · Sourcing › Logistics · 29 Mar 2026 · 12 likes Insurance and carrier liability: most parcel carriers limit liability. Understanding the limits before choosing a carrier matters if you are shipping expensive…
Ultrasound and skinfolds: operator dependence in practice — what changed since Replied, post #28 · Outcomes › Body composition · 25 Mar 2026 · 17 likes Where I part company with post #24, and it is a narrow parting. Photographs under fixed lighting and posture are a genuine record and are the hardest of these to…
Adducts: sodium, potassium, and the peak you did not expect — does this still hold? Replied, post #72 · Analytics › Mass spectrometry · 17 Mar 2026 · 2 likes Resolution: "high resolution" commonly means Adding this to the thread rather than to the wiki, because I am not confident enough for the wiki.
Splitting a weekly dose in two: the pharmacokinetic argument against Replied, post #27 · Practice › Dosing & titration · 13 Mar 2026 · 9 likes Post #24 and I disagree about the size of the effect, not about the direction. The maximum studied dose is a fact about the trial and not a ceiling on the molecule. It…
Oral versus injected administration claims for BPC-157 Replied, post #11 · Compounds › Repair & healing peptides · 12 Mar 2026 · 2 likes Fine by me. I had wanted a stronger conclusion and there is not one available.
[2026 update] Does a peptide degrade silently, with no visual change? Replied, post #33 · Practice › Storage & stability · 11 Mar 2026 · 0 likes Worth separating two things that post #31 runs together. I would put moderate confidence on the mainstream reading of peptide and no more. That is not scepticism for…
A plateau that disappeared when I changed how I measured — the long version Replied, post #14 · Outcomes › Progress reports · 7 Mar 2026 · 24 likes On post #10 — agreed on the reasoning, with one qualification. What I would check first on plateau is whether the thing being measured moved or whether the way of…
[2026 update] Reading a supplementary appendix and finding the interesting part Replied, post #32 · Evidence › Trials · 9 Feb 2026 · 30 likes This follows post #29 rather than contradicting it. I would rather this thread reach "we do not know" about Reading a supplementary appendix than reach a confident…
Managing an unplanned gap in supply Replied, post #21 · Access › Shortages · 3 Feb 2026 · 10 likes Saving this. It is the version I will quote when the question comes round again.
Which panel is worth repeating and which is worth ignoring — a second dataset Replied, post #55 · Clinical › Bloodwork · 19 Jan 2026 · 0 likes Where a panel includes a calculated value, that value inherits the imprecision of everything it was calculated from and is usually reported without an interval.
Second pass at: Circumference measurements as a poor man's composition estimate Replied, post #41 · Outcomes › Body composition · 17 Jan 2026 · 1 like I had written a reply contradicting post #37 and deleted it. Here is what survived. Changes during titration: measuring body composition during active titration is less…
Journal club: LEADER as the historical anchor Replied, post #22 · Evidence › Journal club · 12 Jan 2026 · 31 likes The baseline characteristics table is the single most useful page for the questions that get asked here, because it tells you who the result applies to.
A partial dose because the pen emptied mid-injection Replied, post #7 · Practice › Administration · 6 Jan 2026 · 24 likes Post #5 put the caveat in the right place and I want to underline it. Worth separating partial dose because the pen as a question about the compound from partial dose…
[2026 update] Storing lyophilised material long term: what governs the shelf life Replied, post #38 · Practice › Storage & stability · 19 Dec 2025 · 25 likes Clarity is a weak test. A solution can lose a significant fraction of its active content to degradation or adsorption while remaining perfectly clear. The number is…
EMA product information as a primary source Replied, post #72 · Regional › European Union · 15 Nov 2025 · 2 likes For anyone finding this later: the short answer on EMA product information is that it depends on one thing, and the rest of the thread is people identifying which thing.
Conference abstracts as evidence: the weakest common citation Replied, post #3 · Evidence › Preprints · 27 Oct 2025 · 8 likes A preprint with the data and code attached is frequently more checkable than a published paper without them. Reviewed and reproducible are different properties. Happy…
SURMOUNT-4 and what withdrawal data does and does not tell an individual — one year on Replied, post #64 · Compounds › Tirzepatide · 22 Oct 2025 · 0 likes Worth separating two things that post #60 runs together. The five maintenance doses in the tirzepatide programme give a genuine dose-response curve, which is unusual.…
Where to report an adverse event officially, by region — a second dataset Replied, post #39 · Safety › Adverse events · 20 Oct 2025 · 4 likes On post #37 — agreed on the reasoning, with one qualification. Injection-site reactions that spread over a day or come with systemic symptoms are a different…
What happens after your first post: likes, trust levels, and why none of it matters much… Replied, post #16 · Start Here › Welcome · 13 Oct 2025 · 7 likes The category structure looks heavier than it is. There are twenty top-level categories and you will use three of them. Find those three, mute the rest for a month, and…
A comparison of home results against a laboratory result on the same vial Replied, post #46 · Analytics › Home & field testing · 7 Oct 2025 · 2 likes A home refractometer is not measuring what people hope it is measuring in these preparations, and the readings are dominated by everything other than the peptide. A…
How the vendor documentation pages are maintained, and by whom — what changed since Replied, post #66 · Sourcing › Vendor reports · 2 Oct 2025 · 4 likes I had written a reply contradicting post #62 and deleted it. Here is what survived. I would rather this thread reach "we do not know" about vendor documentation pages…
Citing a preprint in a maintained document: our rule and its reasoning — does this still… Replied, post #52 · Evidence › Preprints · 29 Sep 2025 · 10 likes Where a preprint contradicts a published trial, the prior should favour the trial. Where it extends one, the preprint can be genuinely useful.
Second pass at: What "verified" means on our vendor pages, stated narrowly Replied, post #16 · Sourcing › Vendor reports · 17 Sep 2025 · 0 likes Reports of ordinary results are more valuable than reports of remarkable ones, precisely because only the remarkable ones get posted elsewhere. That matches what I was…
Coming back to: Oxidation and deamidation mass shifts, tabulated Replied, post #36 · Analytics › Mass spectrometry · 14 Sep 2025 · 0 likes Adducts — sodium and potassium especially — shift the observed mass in predictable increments. A report showing an unexplained plus twenty-two is usually showing you a…
Follow-up: The lowest dose that does anything: is that a real question? Replied, post #49 · Practice › Dosing & titration · 6 Sep 2025 · 8 likes Post #45 describes the usual case. This is about the unusual one. When a dose reduction is the correct response to a side effect: if a side effect is dose-dependent…
Vagal afferents and the gut-brain pathway — one year on Replied, post #2 · Pharmacology › Receptor biology · 1 Sep 2025 · 2 likes Biased agonism — where different ligands at the same receptor favour different downstream pathways — is a plausible explanation for differences between compounds in…
Hypertension improvement and when medication needs revisiting Replied, post #28 · Clinical › Comorbidities · 27 Aug 2025 · 1 like The arithmetic in post #25 is right; the assumption feeding it is the part to check. Bariatric surgery history: altered anatomy after surgery affects absorption. That…
[2026 update] Journal club: is percentage weight change the right endpoint? Replied, post #79 · Evidence › Journal club · 21 Aug 2025 · 8 likes The baseline characteristics table is the single most useful page for the questions that get asked here, because it tells you who the result applies to. Posted with…
When a preprint is the best available evidence and we say so Replied, post #78 · Evidence › Preprints · 20 Aug 2025 · 21 likes Before the thread moves on from preprint — what is the sample size behind the claim? I am not being difficult; I have seen the same figure quoted from an n of four and…
Revisiting: Why I ask for the gradient before I discuss the number Replied, post #15 · Analytics › HPLC & UHPLC · 15 Aug 2025 · 5 likes Post #13 and I disagree about the size of the effect, not about the direction. Column temperature affects retention and selectivity and is omitted from most…
Sequence verification for an obscure compound: how it is done Replied, post #97 · Compounds › Other compounds · 19 Jul 2025 · 17 likes Helpful, and short, which on this subject is harder than long.
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly Replied, post #127 · Compounds › Tirzepatide · 4 Jul 2025 · 0 likes Post #124 is right about the mechanism and I think understates the practical bit. Answering the tirzepatide in type 2 diabetes question as asked, then the question I…
The CagriSema phase 2 paper and what a fixed combination buys — the long version Replied, post #106 · Compounds › Cagrilintide & amylin analogues · 15 Jun 2025 · 2 likes Coming back to post #102, because the follow-up matters more than the original answer. On storage: aggregation-prone peptides are the ones where repeated warming and…
Second pass at: Semaglutide and alcohol: what is actually documented Replied, post #11 · Compounds › Semaglutide · 8 Jun 2025 · 0 likes Confirming post #10 from a second method, which matters more than confirming it from a second person. An update on my earlier Semaglutide and alcohol post: the pattern…
Second pass at: Pen dose counters: what a click does and does not guarantee Replied, post #55 · Devices › Pens & autoinjectors · 1 Jun 2025 · 31 likes Bookmarking this. I will come back when I have something worth adding.
Reading a chromatogram someone posted without axes Replied, post #37 · Analytics › HPLC & UHPLC · 25 May 2025 · 0 likes On reading a chromatogram, the part that usually goes wrong is that the question is asked as though it has one answer. It has a range, and the width of the range is the…
Coming back to: Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #3 · Compounds › Semaglutide · 21 May 2025 · 0 likes I read the opening post twice before replying, because I had assumed the opposite. The 2.4 mg maintenance dose in the weight-management programme and the 1.0 mg…
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #88 · Clinical › Comorbidities · 18 May 2025 · 8 likes Post #84 describes the usual case. This is about the unusual one. The version of obstructive sleep apnoea that I was taught turned out to be a teaching simplification.…
Asking about a compound your prescriber has not heard of Replied, post #33 · Clinical › Prescriber conversations · 7 May 2025 · 10 likes Post #31 is the version of this I will quote in future. One addition. Asking what monitoring is planned and why makes the monitoring make sense, and makes it likelier…
Adducts: sodium, potassium, and the peak you did not expect Replied, post #71 · Analytics › Mass spectrometry · 18 Apr 2025 · 9 likes On adducts I would separate what is worth knowing from what is worth acting on. The first list is long and the second is short, and conflating them is how threads get…
Reading order for a first week here, and what to skip until later Replied, post #77 · Start Here › Welcome · 11 Apr 2025 · 2 likes Reading the guidelines before you post is genuinely worth the twenty minutes. Not because you will break one, but because the rules explain why the place reads the way…
Antibiotics and a course of something with delayed emptying Replied, post #12 · Practice › Interactions · 31 Mar 2025 · 9 likes Delayed gastric emptying is the mechanism behind most of the plausible interactions in this class: anything whose absorption depends on how quickly the stomach empties…
A promotion I argued against, and why I lost Replied, post #138 · Documentation › Doc review · 18 Mar 2025 · 6 likes Answering the question post #136 raises rather than the one it answers. The claim about promotion upthread is stronger than its source supports. I have read the source.…
Maintainer handover: how it works Replied, post #70 · Meta › Wiki maintenance · 18 Mar 2025 · 0 likes Volunteering for the review on this one. I use it monthly, I have a list of three things that have aged badly, and I am willing to be named as the second maintainer.
A supplier that answers analytical questions with restated claims Replied, post #40 · Sourcing › Red flags · 16 Mar 2025 · 6 likes Narrowing post #37, because the general version has more than one answer. Safety documentation absent: a supplier that cannot provide information about sterility…
Biased agonism: a real phenomenon, an over-used explanation — what changed since Replied, post #49 · Pharmacology › Receptor biology · 12 Feb 2025 · 5 likes Where I part company with post #45, and it is a narrow parting. Taking Biased agonism seriously for a moment rather than deflecting: the honest position is that the…
Consistent declarations and why they matter more than clever ones Replied, post #9 · Sourcing › Logistics · 8 Feb 2025 · 31 likes I read post #7 twice before replying, because I had assumed the opposite. Peak periods and public holidays affect this more than any other factor and are entirely…
Follow-up: Oral contraceptives and delayed emptying: what the data shows Replied, post #34 · Practice › Interactions · 3 Jan 2025 · 17 likes Oral contraceptives and delayed emptying: I have looked for the primary source twice and failed twice. Either it does not exist or it is somewhere I do not know to…
Persistent vomiting and the threshold for seeking help — one year on Replied, post #18 · Safety › Adverse events · 20 Dec 2024 · 4 likes The claim about Persistent vomiting upthread is stronger than its source supports. I have read the source. The source says "associated with" and the post says "causes".
Coming back to: Renal impairment: what the labelling says about dose Replied, post #22 · Clinical › Special populations · 16 Dec 2024 · 11 likes Hepatic impairment: less is known about dosing in significant liver disease than in kidney disease. Extreme caution applies because the liver metabolises a large…
Injection-site reactions: describing them precisely enough to be useful Replied, post #8 · Practice › Side effects · 17 Nov 2024 · 9 likes A definition problem is doing most of the work in this injection-site reactions discussion. Once the term is pinned down I suspect the disagreement mostly goes away and…
Second pass at: A field-by-field walk through a certificate of analysis Replied, post #63 · Analytics › COA interpretation · 23 Sep 2024 · 3 likes I read post #61 twice before replying, because I had assumed the opposite. Practical answer on field-by-field walk through a certificate, since the theoretical one is…
How this community labels and discusses unrefereed work Replied, post #111 · Evidence › Preprints · 25 Jul 2024 · 11 likes One more thing on community labels that took me far too long to see: the two figures people quote are not measuring the same quantity. Once you notice that, the…
Journal club: FLOW and the renal composite, component by component Replied, post #36 · Evidence › Journal club · 12 Jul 2024 · 26 likes The figures usually contain the finding and the text usually contains the interpretation. Separating them for the first twenty minutes is a discipline worth keeping.…