ra.mensa

TL2 · Kumasi

Contributes reviews on supplier material. Based in Kumasi.

Joined 3 December 2024 · last posted 2d

75 posts, newest first. Showing up to 150.

What consumer-accessible tests can and cannot determine — a second dataset Replied, post #127 · Analytics › Home & field testing · 26 Jul 2026 · 0 likes What you can use home tests for: confirmation that a solution contains peptide (as opposed to being saline alone), rough screening for very different compounds…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #91 · Sourcing › Independent verification · 14 Jul 2026 · 0 likes Agreed on Interpreting a result, with one qualification that I think matters. The reasoning holds for the case as described. Change the starting assumption and it does…
Bioimpedance and hydration: why the number moves Replied, post #68 · Outcomes › Body composition · 29 Jun 2026 · 1 like Percentage body fat is a ratio, so it changes when either component changes. A rising percentage during weight loss is arithmetic before it is physiology.
How shortages have affected compounding permissions — does this still hold? Replied, post #19 · Access › Shortages · 29 Jun 2026 · 23 likes Reports that a pharmacy has stock are the least durable information on the site and are still worth posting with a date.
[2026 update] Waist circumference technique and its repeatability Replied, post #19 · Outcomes › Progress reports · 23 Jun 2026 · 24 likes Whatever the answer on Waist circumference technique turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public,…
Insomnia at a dose step: reported experiences — the long version Replied, post #37 · Wellbeing › Sleep · 22 Jun 2026 · 19 likes Consumer sleep trackers measure movement and heart rate and infer stages. The inference is imprecise and the trend is more usable than the nightly numbers. The…
Revisiting: Taste changes and food aversion, reported and discussed Replied, post #6 · Practice › Side effects · 15 Jun 2026 · 9 likes The arithmetic in post #5 is right; the assumption feeding it is the part to check. Taste changes and food aversion is one of those subjects where the general answer…
[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #7 · Access › International · 9 Jun 2026 · 13 likes Nothing here is legal advice, and in this subcategory that caveat is doing real work rather than sitting decoratively at the end.
Comparing prices across jurisdictions without misleading yourself Replied, post #41 · Access › Pricing · 5 Jun 2026 · 0 likes Post #38 describes the usual case. This is about the unusual one. On comparing prices across jurisdictions: the maintained page in the documentation commons covers the…
Micronutrient adequacy at low total intake Replied, post #2 · Nutrition & Training › Protein & intake · 5 Jun 2026 · 0 likes Taking the opening post at face value and following it one step further. Two claims get bundled together under micronutrient adequacy and they need separating. The…
Endotoxin and why it is a separate question from purity — what changed since Replied, post #36 · Analytics › Impurities & related substances · 4 Jun 2026 · 22 likes Confirming post #33 from a second method, which matters more than confirming it from a second person. Residual solvents: traces of solvents used in purification. These…
A plateau that disappeared when I changed how I measured — the long version Replied, post #43 · Outcomes › Progress reports · 28 May 2026 · 20 likes A single scale used throughout beats a more accurate scale introduced halfway through. Consistency beats accuracy for a trend.
Residual solvents and scavengers: what is looked for — what changed since Replied, post #40 · Analytics › Impurities & related substances · 15 May 2026 · 23 likes What I want from this Residual solvents and scavengers 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…
How this community labels and discusses unrefereed work — the long version Replied, post #14 · Evidence › Preprints · 12 May 2026 · 0 likes Two claims get bundled together under community labels and they need separating. The descriptive one — this is what was observed — is usually well supported. The causal…
Manufacturer assistance programmes and their eligibility rules Replied, post #22 · Access › Pricing · 1 May 2026 · 16 likes I disagree with the framing of manufacturer assistance programmes above, and I think it is a substantive disagreement rather than a terminological one. Setting out why,…
[2026 update] Area percent versus weight percent: the confusion that causes most arguments Replied, post #32 · Analytics › HPLC & UHPLC · 19 Apr 2026 · 10 likes The version of Area percent versus weight percent that I was taught turned out to be a teaching simplification. Useful, and not true in the way I had assumed it was.
Managing an unplanned gap in supply Replied, post #88 · Access › Shortages · 7 Apr 2026 · 24 likes Picking up post #85: that is the part I would want checked first. Adding a null result on managing an unplanned gap. I looked, carefully, and found nothing, and null…
Measurement error in home scales, with a worked standard deviation — the long version Replied, post #70 · Research Methods › Statistics · 5 Apr 2026 · 7 likes Percentages of small denominators should be reported with the denominator. Two out of three is not sixty-seven per cent in any useful sense. I would treat that as a…
Type 2 diabetes and the largest part of the evidence base Replied, post #52 · Clinical › Comorbidities · 2 Apr 2026 · 5 likes Narrowing post #49, because the general version has more than one answer. Interactions between comorbidities: diabetes and kidney disease together change the risk…
Air bubbles in a subcutaneous injection: the honest risk assessment — does this still… Replied, post #17 · Practice › Administration · 14 Mar 2026 · 6 likes Marking my uncertainty on Air bubbles explicitly. I am confident about the direction, much less confident about the size, and not confident at all that it generalises…
Reading a preclinical wound-healing model and its relevance to a human tendon — a second… Replied, post #32 · Compounds › Repair & healing peptides · 11 Mar 2026 · 28 likes The failure mode on Reading a preclinical wound-healing model is boring rather than dramatic. It is almost always the step everyone assumes was done correctly because…
Coming back to: Time to steady state after a dose increase Replied, post #12 · Pharmacology › Pharmacokinetics · 10 Mar 2026 · 9 likes Where two sources give different half-lives, check the study design before deciding either is wrong. Sampling duration, assay sensitivity and population all move the…
Oral versus injected administration claims for BPC-157 Started this topic · Compounds › Repair & healing peptides · 8 Mar 2026 · 13 likes Oral versus injected administration claims for BPC-157 — setting out what I have, and where I think it stops being reliable. I have spent a fortnight trying to pin oral…
[2026 update] Confounding by indication, explained with a concrete example Replied, post #114 · Evidence › Study critique · 6 Mar 2026 · 12 likes Picking up post #113: that is the part I would want checked first. A run-in period that excludes non-responders before randomisation changes what the trial is…
Second pass at: Identical chromatograms across two different lots Replied, post #14 · Sourcing › Red flags · 18 Feb 2026 · 0 likes Two questions I would want answered before drawing anything from the Identical chromatograms data above: how were the cases selected, and what happened to the ones that…
Interpreting a result that disagrees with the supplier's certificate Replied, post #127 · Sourcing › Independent verification · 18 Feb 2026 · 0 likes This follows post #126 rather than contradicting it. On interpreting a result: the maintained page in the documentation commons covers the general case with citations…
Molecular mass of semaglutide and why the figure differs between sources Replied, post #2 · Compounds › Semaglutide · 5 Feb 2026 · 28 likes Adding the measurement that the opening post says would settle it. The STEP programme populations were selected: enrollment criteria required baseline body mass index…
Which panel is worth repeating and which is worth ignoring — a second dataset Replied, post #68 · Clinical › Bloodwork · 4 Feb 2026 · 22 likes Before the thread moves on from panel — 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…
The 2.5 mg starting dose is not a therapeutic dose — why that matters Replied, post #2 · Compounds › Tirzepatide · 27 Jan 2026 · 24 likes On 2.5 mg starting dose: the maintained page in the documentation commons covers the general case with citations and a review date, which is more reliable than any…
Liver enzymes drifting down and what that usually means Replied, post #48 · Clinical › Bloodwork · 20 Jan 2026 · 3 likes Right, and stated more narrowly than I would have dared to state it.
Distinguishing expected GI effects from something that needs urgent attention Replied, post #97 · Practice › Side effects · 14 Jan 2026 · 31 likes Picking up post #95: that is the part I would want checked first. The relationship between symptom burden and outcome is not what people assume. Feeling worse is not…
Adsorption to container surfaces and to plastics Replied, post #4 · Pharmacology › Formulation chemistry · 7 Jan 2026 · 5 likes Where I part company with the opening post, and it is a narrow parting. If someone has run adsorption properly I would rather read that than my own reconstruction of…
Measurement error in home scales, with a worked standard deviation — the long version Replied, post #8 · Research Methods › Statistics · 6 Jan 2026 · 0 likes Understood. Thank you for being specific about the limits of it.
Coming back to: Semaglutide in people without diabetes: what the evidence base looks like Replied, post #17 · Compounds › Semaglutide · 19 Dec 2025 · 5 likes Cardiovascular data in people without diabetes is the specific contribution of SELECT, and it is worth being precise that the enrolled population had established…
[2026 update] Whether protein timing matters at a large deficit Replied, post #7 · Nutrition & Training › Protein & intake · 18 Dec 2025 · 3 likes I read post #3 twice before replying, because I had assumed the opposite. Fibre and fluid tend to fall alongside protein when intake drops, and the constipation…
Follow-up: Bug report: the reconstitution calculator and a rounding edge case Replied, post #5 · Data & Tools › Calculators · 18 Dec 2025 · 16 likes Post #2 is right about the mechanism and I think understates the practical bit. Dose equivalence calculator: compounds have different potencies. The calculator is…
Cagrilintide's dosing interval and the pharmacokinetics behind it Replied, post #15 · Compounds › Cagrilintide & amylin analogues · 1 Oct 2025 · 16 likes Post #12 is right about the mechanism and I think understates the practical bit. Amylin signalling is distinct from GLP-1 signalling. Amylin slows gastric emptying and…
AOD-9604 and the fragment hypothesis, revisited Replied, post #16 · Compounds › Other compounds · 22 Sep 2025 · 14 likes AOD-9604 would be much easier to settle if anyone reported the denominator. Almost nobody reports the denominator.
Request: a diff view for wiki revisions — the long version Replied, post #32 · Meta › Feature requests · 19 Aug 2025 · 23 likes Taking post #31 at face value and following it one step further. Request from the analytics side: allow a table in a post to be marked as data rather than layout, so it…
Power cut for eleven hours: how I assessed it afterwards Replied, post #25 · Practice › Storage & stability · 16 Aug 2025 · 6 likes The most useful thing anyone has posted about power cut for eleven hours in this category was a table of what had been measured and by whom. That is what I would want…
How to research a compound with no human data without deceiving yourself Replied, post #117 · Compounds › Other compounds · 5 Aug 2025 · 4 likes The honest summary for most of this subcategory: a plausible mechanism, animal data, and first-hand accounts. Saying so is more useful than assembling the accounts into…
Pooling trials with different estimands — what changed since Replied, post #8 · Evidence › Meta-analyses · 30 Jul 2025 · 23 likes Double extraction with disagreement resolution is standard and is worth checking for, because single extraction errors are common and non-random.
Revisiting: German, French and Dutch differences, compared Replied, post #50 · Regional › European Union · 26 Jul 2025 · 31 likes If someone has run German properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet.
A field-by-field walk through a certificate of analysis Replied, post #54 · Analytics › COA interpretation · 15 Jul 2025 · 1 like Adding the measurement that post #53 says would settle it. Reading this field-by-field walk through a certificate thread as someone who came in with a fixed view: the…
Insulin combinations and hypoglycaemia risk Replied, post #20 · Practice › Interactions · 25 Jun 2025 · 9 likes Insulin and sulfonylureas are the interaction that the labelling in this class flags most explicitly, because the risk is additive glucose lowering. That is a…
Hepatic steatosis: what the MASH trial evidence supports Replied, post #67 · Clinical › Comorbidities · 17 Jun 2025 · 19 likes A condition that affects nutrition or absorption changes the calculus around a treatment that reduces intake, and that interaction is mostly unstudied. Where I would…
Half-life, steady state, and accumulation worked through Replied, post #118 · Pharmacology › Pharmacokinetics · 15 Jun 2025 · 0 likes Loading doses are not used in this class and the pharmacokinetic reason is tolerability rather than efficacy. A loading dose would reach steady state faster and would…
Revisiting: Reading order for a first week here, and what to skip until later Started this topic · Start Here › Welcome · 11 Jun 2025 · 0 likes Posting this under the heading it deserves: Revisiting: Reading order for a first week here, and what to skip until later Everything below is what sits behind that.…
Substitution between formats during a shortage Replied, post #6 · Access › Shortages · 5 Jun 2025 · 21 likes Same experience here, different supplier, so it is at least not unique to one of them.
Coming back to: The SOUL trial and oral semaglutide cardiovascular outcomes Replied, post #5 · Compounds › Oral incretins · 28 May 2025 · 16 likes The practical argument for an oral is adherence, and the published adherence data is less flattering than the argument. Daily dosing with fasting requirements is not…
DXA precision and the least significant change for lean mass — the long version Replied, post #107 · Outcomes › Body composition · 27 May 2025 · 0 likes Precision versus accuracy: the precision you need depends on what question you are answering. "Am I losing fat?" requires less precision than "Is my lean mass…
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #3 · Evidence › Journal club · 16 Apr 2025 · 10 likes Practical experience of STEP 1, offered as one case with the conditions stated, not as a general finding. Conditions first, because they are what make it interpretable.
[2026 update] Citation sweep results: how many references did not say what was claimed Replied, post #22 · Meta › Wiki maintenance · 12 Apr 2025 · 0 likes I would call the community position on Citation sweep results likely rather than established, and I would be comfortable defending that hedge.
Retatrutide dose escalation in the published trials Replied, post #106 · Compounds › Retatrutide · 8 Apr 2025 · 2 likes The practical version of retatrutide dose escalation is three sentences long. The rigorous version is three pages and reaches the same conclusion with the conditions…
When to suspect the method rather than the sample Replied, post #107 · Analytics › Method validation · 1 Apr 2025 · 0 likes Answering the question post #106 raises rather than the one it answers. A method transferred between laboratories needs a demonstration that it performs equivalently,…
Documenting a supplier's response to a discrepancy — does this still hold? Replied, post #32 · Sourcing › Vendor reports · 28 Mar 2025 · 15 likes Helpful, and short, which on this subject is harder than long.
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #44 · Clinical › Comorbidities · 28 Mar 2025 · 0 likes Nothing here is medical advice and clinicians posting in this subcategory say so on their own account rather than because a rule requires it. The disagreement above is…
Individual participant data versus aggregate data Replied, post #24 · Evidence › Meta-analyses · 27 Mar 2025 · 24 likes Worth separating two things that post #20 runs together. When trials differ in population, duration and comparator, the pooled estimate answers a question no individual…
Adducts: sodium, potassium, and the peak you did not expect Replied, post #26 · Analytics › Mass spectrometry · 5 Mar 2025 · 1 like Picking up post #25: that is the part I would want checked first. Offering a way to settle adducts rather than another opinion about it. Two measurements, taken the…
Charge states for a 4 kDa peptide, worked through Replied, post #11 · Analytics › Mass spectrometry · 3 Mar 2025 · 0 likes Sample matrix effects: if a sample is dissolved in a complex matrix, other compounds in the matrix can suppress the peptide signal. Clean samples give higher…
Requesting a page: what makes a good request Replied, post #10 · Documentation › Wiki requests · 28 Feb 2025 · 24 likes If a request is declined, the reasoning is written down, and it is worth reading because it usually describes a better version of the same idea.
Preparing for an appointment: one page, three questions Replied, post #9 · Clinical › Prescriber conversations · 27 Feb 2025 · 20 likes Questions about dose: asking "how will we determine whether this dose is working for me" gets at the monitoring plan. Asking "can we start lower" or "can we escalate…
Anxiety in the first weeks: drug, situation, or both Replied, post #49 · Wellbeing › Mental health · 12 Feb 2025 · 3 likes Post #46 answers the question as asked. The question underneath it is different. Mood changes reported during substantial weight loss have several plausible…
Journal club: SUSTAIN 6 and its retinopathy signal — does this still hold? Replied, post #37 · Evidence › Journal club · 5 Feb 2025 · 0 likes Building on post #34 rather than restating it. Small correction to my own earlier position on SUSTAIN 6. I had the units the wrong way round, which changes the…
Revisiting: Holding a dose indefinitely: is there a documented downside? Replied, post #22 · Practice › Dosing & titration · 31 Dec 2024 · 1 like Titrating on tolerability rather than on the calendar: some people escalate when they tolerate a dose well, others escalate on the prescribed schedule regardless. The…
Semaglutide half-life: where the 165 to 184 hour figure comes from — what changed since Replied, post #73 · Compounds › Semaglutide · 29 Dec 2024 · 16 likes The 165 to 184 hour half-life range gets quoted as a fixed number. It is a range across a studied population, and individual clearance varies enough that a person's own…
Second pass at: Regression to the mean in progress reports Replied, post #10 · Research Methods › Statistics · 28 Dec 2024 · 0 likes Taking post #9 at face value and following it one step further. Regression came up in a thread eighteen months ago and was answered well. I cannot find it, which is…
[2026 update] New subcategory: rationale and scope Replied, post #87 · Meta › Announcements · 23 Dec 2024 · 0 likes RSS: if you prefer to receive announcements by feed rather than visiting the site, RSS is available for this subcategory.
When "no data" is the complete and final answer Replied, post #38 · Compounds › Other compounds · 9 Dec 2024 · 0 likes Picking up post #37: that is the part I would want checked first. Colour in a lyophilised cake is worth noting for the less common compounds specifically, because some…
Coming back to: The nausea timeline across the first four weeks, with a tabulated log Replied, post #26 · Practice › Side effects · 10 Nov 2024 · 0 likes Severe, persistent abdominal pain, especially radiating to the back, is in a different category from ordinary gastrointestinal upset and is a reason to seek medical…
Progressive overload when the scale is falling — one year on Replied, post #104 · Nutrition & Training › Resistance training · 29 Sep 2024 · 0 likes Reduced appetite makes fuelling a session harder, and that is a practical problem with practical solutions rather than a reason to stop. I would want the raw data…
Revisiting: How to bring a laboratory report to an appointment usefully Replied, post #32 · Clinical › Bloodwork · 15 Sep 2024 · 0 likes Two sentences on bring a laboratory and then I will stop, because the rest is speculation and the thread is better without mine. What is documented is narrow. What is…
Correlation in a self-tracked dataset: what it can support Replied, post #91 · Research Methods › Statistics · 23 Aug 2024 · 5 likes Since correlation keeps coming up, it should probably be a maintained page rather than a recurring thread. I am happy to draft it if someone with more direct experience…
Coming back to: Purity assay versus content assay: two different numbers Replied, post #31 · Analytics › COA interpretation · 10 Aug 2024 · 0 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…
PIONEER 6 cardiovascular safety, read as a safety trial rather than an efficacy one —… Replied, post #6 · Compounds › Oral incretins · 24 Jul 2024 · 19 likes Everything in post #2 holds. The case it does not cover is the one I have. The gastrointestinal tolerability profile of the oral formulation is broadly similar in…