k.roos

TL2 · Kuopio

Contributes reviews on supplier material. Based in Kuopio.

Joined 31 October 2024 · last posted 1d

94 posts, newest first. Showing up to 150.

Common supplements people ask about, assessed one at a time Replied, post #105 · Practice › Interactions · 27 Jul 2026 · 22 likes Research-use-only compounds have no interaction data of any kind, because interaction studies are done on medicines being developed for use in people. Small point, but…
Revisiting: Protein density versus volume when you cannot eat much Replied, post #103 · Nutrition & Training › Protein & intake · 25 Jul 2026 · 0 likes Confirming post #100 from a second method, which matters more than confirming it from a second person. Leucine and MPS: leucine stimulates muscle protein synthesis at a…
Micro-titration: a disputed topic, argued properly — one year on Replied, post #67 · Practice › Dosing & titration · 23 Jul 2026 · 31 likes Concentration and dose get conflated constantly in this subcategory. Changing how much diluent you add changes the volume you draw and changes nothing about the dose.
What a certificate commits its issuer to Replied, post #82 · Analytics › COA interpretation · 22 Jul 2026 · 4 likes Confirming post #80 from a second method, which matters more than confirming it from a second person. An itemised related-substances table with retention times says…
NHS criteria and how they are applied in practice Replied, post #38 · Regional › UK & Ireland · 22 Jul 2026 · 26 likes Trying to state the NHS criteria position in a way that someone who disagrees would recognise as fair, because I do not think the version in this thread passes that test.
Coming back to: Telehealth prescribing models in the US Replied, post #24 · Regional › North America · 22 Jul 2026 · 30 likes Answering the Telehealth prescribing models question as asked, then the question I think is meant. As asked: yes, with the qualification below. As meant: it depends on…
Revisiting: Why the absence of controlled human data on BPC-157 matters more than people… Replied, post #41 · Compounds › Repair & healing peptides · 19 Jul 2026 · 31 likes Stability in solution is the practical constraint. Dry, these keep well; reconstituted, the supplier's own data usually covers a shorter period than people assume.
Coming back to: Where the four-week escalation interval comes from, and what it is not Replied, post #35 · Practice › Dosing & titration · 19 Jul 2026 · 22 likes The four-week step is a trial convention, not a pharmacological constant. It is roughly four half-lives for a week-long half-life, which is the interval at which you…
Journal club: SUSTAIN 6 and its retinopathy signal Replied, post #85 · Evidence › Journal club · 19 Jul 2026 · 0 likes Sessions on negative or null results are consistently the most instructive and the hardest to get anyone to attend. I would rather say I do not know than round it up to…
[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #51 · Practice › Interactions · 16 Jul 2026 · 8 likes On post #47 — agreed on the reasoning, with one qualification. Before the thread moves on from Antibiotics — what is the sample size behind the claim? I am not being…
Risk-of-bias tools and the judgement they conceal — does this still hold? Replied, post #26 · Evidence › Meta-analyses · 14 Jul 2026 · 4 likes Filing a mild objection to the consensus on Risk-of-bias tools. Mild because I might be wrong; an objection because nobody has addressed the case that does not fit.
[2026 update] Regional warehouse stock versus direct despatch Replied, post #133 · Sourcing › Logistics · 13 Jul 2026 · 24 likes What I want from this Regional warehouse stock versus direct thread is the list of things that would need to be true for the claim to hold. If we can write that list,…
Aggregate verification data across the directory, with caveats Replied, post #31 · Sourcing › Independent verification · 6 Jul 2026 · 0 likes Service differences on vendor pages: Janoshik and Medutest results are measurements on vials. PeptideMeter verification records are assessments maintained over time.…
Coming back to: Reconciling a supplier certificate with an independent result Replied, post #20 · Sourcing › Vendor reports · 30 Jun 2026 · 0 likes The arithmetic in post #18 is right; the assumption feeding it is the part to check. Disputed records: when a result disagreed and was not explained, the record says…
Pooling trials with different estimands Replied, post #53 · Evidence › Meta-analyses · 27 Jun 2026 · 1 like Fixed-effect and random-effects models answer different questions. The first assumes one true effect; the second assumes a distribution of them. Choosing between them…
Follow-up: Search filters: what is missing Replied, post #137 · Meta › Site feedback · 23 Jun 2026 · 11 likes The arithmetic in post #136 is right; the assumption feeding it is the part to check. Performance: if pages are slow to load, timeouts occur, or the site is…
Insurance and replacement policies, compared Replied, post #37 · Sourcing › Logistics · 23 Jun 2026 · 0 likes Insurance and replacement policies is one of those subjects where the general answer and the answer for a specific case diverge, and the thread will go in circles until…
Micronutrient adequacy at low total intake Replied, post #36 · Nutrition & Training › Protein & intake · 9 Jun 2026 · 0 likes Where I part company with post #32, and it is a narrow parting. Micronutrient adequacy would be much easier to settle if anyone reported the denominator. Almost nobody…
Alcohol: what is documented and what is folklore Replied, post #38 · Practice › Interactions · 2 Jun 2026 · 0 likes Picking up post #35: that is the part I would want checked first. Marking my uncertainty on alcohol explicitly. I am confident about the direction, much less confident…
Blind submission and why it changes minds — the long version Replied, post #92 · Sourcing › Independent verification · 23 May 2026 · 0 likes Picking up post #89: that is the part I would want checked first. Practical note on Blind submission: write down what you expect before you look. The number of times I…
Secretagogues and glucose tolerance: the mechanistic concern — what changed since Replied, post #7 · Compounds › Secretagogues & GH axis · 22 May 2026 · 0 likes Good question, well framed, and I would like to see it answered properly.
Follow-up: Tirzepatide and nausea: is the profile genuinely different or just… Replied, post #70 · Compounds › Tirzepatide · 20 May 2026 · 0 likes Tirzepatide's half-life of roughly five days means steady state is approached in about three weeks rather than four. That is a real difference from semaglutide and it…
Comparing my trajectory with the trial curves, carefully — a second dataset Replied, post #45 · Outcomes › Progress reports · 15 May 2026 · 5 likes Coming back to post #41, because the follow-up matters more than the original answer. Menstrual cycle: for people who menstruate, weight can shift by several pounds…
Blind submission and why it changes minds — the long version Replied, post #71 · Sourcing › Independent verification · 12 May 2026 · 5 likes Everything in post #67 holds. The case it does not cover is the one I have. The version of Blind submission that I was taught turned out to be a teaching…
Prescription portability between countries Replied, post #29 · Access › International · 10 May 2026 · 6 likes Worth separating two things that post #27 runs together. The number people quote for prescription portability between countries is a central estimate presented without…
Coming back to: Washout: how long is long enough, and for what purpose Replied, post #128 · Pharmacology › Pharmacokinetics · 3 May 2026 · 26 likes Taking post #127 at face value and following it one step further. Reading this Washout thread as someone who came in with a fixed view: the third and seventh replies…
Request: show the solution author in the topic list — what changed since Replied, post #43 · Meta › Feature requests · 2 May 2026 · 25 likes Coming back to post #41, because the follow-up matters more than the original answer. Effort estimation: some features are trivial to implement; others are substantial…
Common supplements people ask about, assessed one at a time — a second dataset Replied, post #92 · Practice › Interactions · 23 Apr 2026 · 0 likes Adding the measurement that post #89 says would settle it. Separation timing versus clinically important interaction: a separation timing inconvenience (taking one…
Search filters: what is missing Replied, post #49 · Meta › Site feedback · 21 Apr 2026 · 7 likes Guideline clarity: if the guidelines are unclear or seem to be applied inconsistently, post the specific situation so staff can clarify or reconsider.
Rotating between abdomen, thigh and upper arm: absorption differences — one year on Replied, post #49 · Practice › Administration · 18 Apr 2026 · 26 likes Injecting into an area that has become firm: lipohypertrophy — thickened fatty tissue from repeated injection in one area — changes local tissue absorption. Avoid…
Journal club: is percentage weight change the right endpoint? Replied, post #69 · Evidence › Journal club · 15 Apr 2026 · 0 likes Post #67 describes the usual case. This is about the unusual one. Sessions on negative or null results are consistently the most instructive and the hardest to get…
Manufacturer assistance programmes and their eligibility rules Replied, post #17 · Access › Pricing · 10 Apr 2026 · 0 likes The cost of an independent submission is worth stating in these threads, because it is the main reason people do not do it.
Reconstitution volumes that produce round numbers, tabulated Replied, post #87 · Practice › Reconstitution · 10 Apr 2026 · 12 likes Post #85 describes the usual case. This is about the unusual one. The best check on any reconstitution calculation is to do it twice by two different routes — mass per…
Pancreatitis history and the risk calculus Replied, post #2 · Safety › Contraindications · 8 Apr 2026 · 0 likes Right — I had this wrong and I am glad to have read it before it mattered.
Coming back to: Why a preprint's supplementary material is often the best part Replied, post #23 · Evidence › Preprints · 3 Apr 2026 · 1 like Server repositories: medRxiv for medicine, bioRxiv for biology. Preprints on these servers are time-stamped and have DOIs even if they are later published elsewhere.…
Oral versus injected administration claims for BPC-157 Replied, post #19 · Compounds › Repair & healing peptides · 15 Mar 2026 · 8 likes A note on how oral versus injected administration claims gets discussed rather than on oral versus injected administration claims itself: the confident posts get the…
Second pass at: Identical chromatograms across two different lots Replied, post #43 · Sourcing › Red flags · 5 Mar 2026 · 0 likes Confirming post #40 from a second method, which matters more than confirming it from a second person. On Identical chromatograms, I would rather understate and be…
Measurement error in home scales, with a worked standard deviation Replied, post #14 · Research Methods › Statistics · 27 Feb 2026 · 18 likes Baseline imbalance in a randomised trial is expected by chance and adjusting for it post hoc is a choice that should have been pre-specified. That matches what I was…
[2026 update] A rising related-substance total over six months: degradation or method… Replied, post #48 · Analytics › Impurities & related substances · 16 Feb 2026 · 5 likes My experience of rising related-substance contradicts the reply above. I am posting it as a data point rather than as a refutation, because one person's experience is…
Managing an unplanned gap in supply Replied, post #29 · Access › Shortages · 12 Feb 2026 · 3 likes Coming back to post #27, because the follow-up matters more than the original answer. International supply chains: a shortage in one country does not mean shortage in…
Journal club: LEADER as the historical anchor Replied, post #30 · Evidence › Journal club · 2 Feb 2026 · 16 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.…
Second pass at: Adsorptive losses at low concentration, and why dilute solutions are… Replied, post #17 · Practice › Storage & stability · 13 Jan 2026 · 32 likes Post #15 put the caveat in the right place and I want to underline it. On Adsorptive losses, I would rather understate and be corrected upward than overstate and be…
Reference intervals: how they are constructed and why one in twenty flags Replied, post #35 · Clinical › Bloodwork · 12 Jan 2026 · 22 likes Taking post #34 at face value and following it one step further. Reference intervals was covered in the wiki last year and the page has a review date on it, which is a…
What a good consultation looks like from the other side Replied, post #8 · Clinical › Prescriber conversations · 7 Jan 2026 · 7 likes Trying to state the good consultation position in a way that someone who disagrees would recognise as fair, because I do not think the version in this thread passes…
What to include when your question involves a chromatogram Replied, post #8 · Start Here › How to Ask · 29 Dec 2025 · 8 likes Adding the measurement that post #5 says would settle it. Say what you have already ruled out. "It is not the diluent because I tried a second vial from a different…
Coming back to: Private prescribing in the UK: what is actually involved Replied, post #11 · Regional › UK & Ireland · 25 Dec 2025 · 0 likes I came in to disagree and I am leaving without a disagreement.
Temperature loggers worth the money — the long version Replied, post #98 · Devices › Cold chain · 22 Dec 2025 · 27 likes The claim about Temperature loggers worth the money upthread is stronger than its source supports. I have read the source. The source says "associated with" and the…
Revisiting: Why tirzepatide titration schedules have more steps than semaglutide's Replied, post #74 · Compounds › Tirzepatide · 15 Nov 2025 · 18 likes Post #70 put the caveat in the right place and I want to underline it. Dual agonism versus dose: how much of tirzepatide's effect is the GIP component and how much is…
Request: a diff view for wiki revisions — the long version Replied, post #65 · Meta › Feature requests · 4 Nov 2025 · 30 likes Request: an export of my own posts. Not for any dramatic reason — I want to search my own history offline, and site search is optimised for finding other people's…
The anatomy of a question that gets answered within an hour — the long version Replied, post #37 · Start Here › How to Ask · 29 Oct 2025 · 3 likes Reading rather than contributing, but this is the most useful thread I have found on it.
Where to report an adverse event officially, by region — a second dataset Replied, post #31 · Safety › Adverse events · 18 Oct 2025 · 0 likes A report is more useful with dates, dose, timing relative to dose, and everything else being taken. Without those it cannot be assessed.
A 40-week log with the measurement method stated Replied, post #24 · Outcomes › Progress reports · 17 Oct 2025 · 10 likes Coming back to post #22, because the follow-up matters more than the original answer. Trying to state the 40-week log position in a way that someone who disagrees would…
Second pass at: Programming during a large energy deficit Replied, post #28 · Nutrition & Training › Resistance training · 5 Oct 2025 · 0 likes Trying to state the Programming during a large energy position in a way that someone who disagrees would recognise as fair, because I do not think the version in this…
Cross-border purchase rules within the EU Replied, post #18 · Regional › European Union · 1 Oct 2025 · 23 likes If someone has run cross-border purchase rules within properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone…
Absence of evidence and evidence of absence Started this topic · Research Methods › Statistics · 25 Sep 2025 · 43 likes Absence of evidence and evidence of absence Writing it up because I had to work it out twice and would rather nobody else did. Asking about absence of evidence on…
High-resolution MS on aggregates and what it can see Replied, post #76 · Analytics › Mass spectrometry · 24 Sep 2025 · 16 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…
A preprint whose numbers changed substantially at publication Replied, post #46 · Evidence › Preprints · 9 Sep 2025 · 12 likes A preprint reporting a null result is more likely to stay a preprint, which biases the published literature and makes preprint servers more valuable rather than less. I…
The nausea timeline across the first four weeks, with a tabulated log Replied, post #40 · Practice › Side effects · 5 Sep 2025 · 8 likes Timeline matters: onset, duration, pattern over days or weeks, relationship to injection and to meals all provide information that "I have nausea" does not. Posting…
When a preprint is the best available evidence and we say so Replied, post #102 · Evidence › Preprints · 26 Aug 2025 · 6 likes Post #101 is the version of this I will quote in future. One addition. Where a preprint's numbers are the basis of a claim being repeated here, someone should check…
Critiquing an observational claim about a class effect — one year on Replied, post #3 · Evidence › Study critique · 15 Aug 2025 · 1 like Sample size calculated on an optimistic effect estimate produces a trial that is underpowered for the effect that actually exists. That is visible in the protocol.
Follow-up: The lowest dose that does anything: is that a real question? Replied, post #41 · Practice › Dosing & titration · 14 Aug 2025 · 2 likes The arithmetic of an intermediate dose: if the label says 1.0 mg and 2.0 mg, a dose strictly between them is off-label by definition. Some people compute it anyway. The…
Cross-border purchase within the EU: the actual rules Replied, post #9 · Access › International · 13 Aug 2025 · 11 likes Post #5 put the caveat in the right place and I want to underline it. Customs practice varies between entry points within the same country, which is why two people in…
A field-by-field walk through a certificate of analysis Replied, post #83 · Analytics › COA interpretation · 16 Jul 2025 · 4 likes An itemised related-substances table with retention times says considerably more about the synthesis than a single total. A total tells you how much is not the main…
Managing an unplanned gap in supply — what changed since Replied, post #12 · Access › Shortages · 6 Jul 2025 · 0 likes Confirming post #11 from a second method, which matters more than confirming it from a second person. Both are useful and different. The notice tells you the national…
Why "any advice?" is the least effective ending for a post — the long version Replied, post #16 · Start Here › How to Ask · 23 Jun 2025 · 26 likes What you have already read matters. Saying "I read the maintained page on this and I still have a gap" tells people they do not need to point you at the same resource…
[2026 update] Clearance pathways and what renal impairment changes Replied, post #43 · Pharmacology › Pharmacokinetics · 13 Jun 2025 · 2 likes Marking my uncertainty on Clearance pathways explicitly. I am confident about the direction, much less confident about the size, and not confident at all that it…
Coming back to: An 18-month record including the parts that went badly Replied, post #63 · Outcomes › Progress reports · 8 Jun 2025 · 4 likes Rate of change matters more than the absolute number for most of the questions people ask about their own series. Reading it again, the caveat matters more than the…
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ Replied, post #102 · Sourcing › Independent verification · 16 May 2025 · 25 likes Everything in post #98 holds. The case it does not cover is the one I have. Service differences on vendor pages: Janoshik and Medutest results are measurements on…
Talking to a therapist about this specifically — does this still hold? Replied, post #61 · Wellbeing › Mental health · 14 May 2025 · 0 likes If you are in crisis, contact a local emergency or crisis service rather than posting. A volunteer forum cannot help and waiting costs time. If anyone has run this…
Relative retention time as a better inter-laboratory comparator Replied, post #9 · Analytics › Method validation · 12 May 2025 · 21 likes Building on post #6 rather than restating it. Reporting a result to more decimal places than the method's precision supports is a small dishonesty that appears…
Pages past their review date, listed — does this still hold? Replied, post #21 · Meta › Wiki maintenance · 10 May 2025 · 21 likes The arithmetic in post #18 is right; the assumption feeding it is the part to check. Redundancy: if two maintained pages cover largely the same ground, consolidation…
Comparators chosen for regulatory reasons rather than clinical ones — one year on Replied, post #26 · Evidence › Trials · 9 May 2025 · 24 likes Composite endpoints should be read component by component. A composite driven entirely by its softest component is a different finding from one where the components…
Reading a trial's population section before its results — does this still hold? Replied, post #67 · Evidence › Trials · 4 May 2025 · 0 likes Confounding in observational data: a third variable can explain an apparent association. In a randomised trial, randomisation balances unknown confounders. In…
Needle changes between doses on a reusable pen Replied, post #6 · Devices › Pens & autoinjectors · 1 May 2025 · 0 likes Second this, and I would have said it less carefully.
Antibiotics and a course of something with delayed emptying Replied, post #20 · Practice › Interactions · 13 Apr 2025 · 20 likes SGLT2 inhibitors: frequently co-administered and relevant to renal and cardiovascular discussion, not to interactions. There is no pharmacokinetic interaction of concern.
Research-use-only labelling: what it means and what it does not — the long version Replied, post #117 · Sourcing › Regulatory · 30 Mar 2025 · 0 likes Reading this Research-use-only labelling thread as someone who came in with a fixed view: the third and seventh replies moved me and the confident ones did not.
Revisiting: Oral versus injected administration claims for BPC-157 Replied, post #8 · Compounds › Repair & healing peptides · 21 Mar 2025 · 15 likes Where I part company with post #4, and it is a narrow parting. Stability of BPC-157 in solution: what has been measured in published work covers specific formulations…
Delayed gastric emptying and oral medication absorption: which drugs matter Replied, post #14 · Practice › Interactions · 13 Mar 2025 · 0 likes Narrowing post #11, because the general version has more than one answer. Delayed gastric emptying and oral is a question about a distribution, not about a value, and…
[2026 update] Cardiovascular risk: reading the outcome trials as a set Replied, post #3 · Clinical › Comorbidities · 10 Mar 2025 · 21 likes Checked the Cardiovascular risk claim against the primary source this morning. It survives, with a narrower scope than the version quoted here. Posting the narrower…
Consistent declarations and why they matter more than clever ones Replied, post #115 · Sourcing › Logistics · 2 Mar 2025 · 22 likes Where I part company with post #111, and it is a narrow parting. The thing about consistent declarations that took me longest to accept is that a plausible mechanism is…
Domestic fridge temperature mapping: a cheap experiment — what changed since Replied, post #60 · Devices › Cold chain · 2 Mar 2025 · 0 likes A phase-change pack holds a defined temperature while it changes state and then behaves like anything else. A gel pack starts cold and warms continuously. They are…
Telehealth prescribing models in the US Replied, post #60 · Regional › North America · 19 Feb 2025 · 19 likes The arithmetic on telehealth prescribing models is the easy part and it is where the errors are, which is an uncomfortable combination. Show your working and someone…
A promotion I argued against, and why I lost Replied, post #95 · Documentation › Doc review · 12 Feb 2025 · 33 likes Post #93 put the caveat in the right place and I want to underline it. Objections are genuinely wanted at this stage, because a bad promotion is much harder to undo…
Revisiting: What a well-designed human trial of a secretagogue would look like Replied, post #36 · Compounds › Secretagogues & GH axis · 17 Jan 2025 · 16 likes Distinguishing three things in the well-designed human trial discussion that keep getting used interchangeably: the observation, the proposed mechanism, and the…
Follow-up: Individual participant data versus aggregate data Replied, post #60 · Evidence › Meta-analyses · 10 Jan 2025 · 0 likes Careful with the language on Individual participant data versus aggregate. "Not detected" and "not present" are different findings and the first is a statement about…
Coming back to: Preparing for an appointment: one page, three questions Replied, post #141 · Clinical › Prescriber conversations · 7 Jan 2025 · 8 likes I read post #138 twice before replying, because I had assumed the opposite. Prescription logistics: confirm whether it will be filled locally, requires mail order, or…
[2026 update] Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #84 · Evidence › Journal club · 6 Jan 2025 · 20 likes The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions. That has held…
SNAC and the mechanism of oral peptide absorption — the long version Replied, post #16 · Compounds › Oral incretins · 13 Dec 2024 · 0 likes Anyone comparing published oral and injectable efficacy should check whether the comparison is within one trial or across two. Across two, the populations differ and…
Request: a diff view for wiki revisions Replied, post #23 · Meta › Feature requests · 11 Nov 2024 · 1 like No disagreement from me. Posting only so the question does not look ignored.
Food noise reducing and the disorientation that can follow Replied, post #30 · Wellbeing › Mental health · 28 Oct 2024 · 22 likes On post #28 — agreed on the reasoning, with one qualification. Support and community: some people process weight change through community (online or in-person). Others…
Why a preprint's supplementary material is often the best part Replied, post #37 · Evidence › Preprints · 25 Sep 2024 · 26 likes Server repositories: medRxiv for medicine, bioRxiv for biology. Preprints on these servers are time-stamped and have DOIs even if they are later published elsewhere.…
Priming a pen and whether the primed volume is wasted — one year on Replied, post #5 · Devices › Pens & autoinjectors · 15 Sep 2024 · 20 likes Storage instructions for a pen typically differ before and after first use, and the in-use period is the one people miss. It is on the carton. Anyone with a larger…
Guidelines revision: what changed and why Replied, post #40 · Meta › Announcements · 26 Jul 2024 · 5 likes One question about the transition rather than the policy: what happens to topics that are in flight when it takes effect? The announcement is clear about posts and…
Splitting a weekly dose in two: the pharmacokinetic argument against — the long version Replied, post #59 · Practice › Dosing & titration · 8 Jul 2024 · 8 likes Escalating before steady state means you are judging a dose you have not yet fully experienced. That is the whole argument against compressing the schedule and it is a…