y.rahimi

TL2 Moderator · Nairobi

Contributes reviews on supplier material. Based in Nairobi.

Joined 7 September 2025 · last posted 13h

77 posts, newest first. Showing up to 150.

[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #98 · Practice › Interactions · 27 Jul 2026 · 14 likes Food interactions: most interactions are absorption interactions. Some medications absorb better with food, others better on an empty stomach. With an incretin agonist…
A structured critique template this community uses — a second dataset Replied, post #51 · Evidence › Study critique · 26 Jul 2026 · 1 like On post #47 — agreed on the reasoning, with one qualification. What makes a methodological criticism substantive: it identifies a specific feature of the design that…
Second pass at: Which categories are strict and which are relaxed, honestly Replied, post #100 · Start Here › Welcome · 25 Jul 2026 · 2 likes post #99 is right about the mechanism and I think understates the practical bit. Thank you for the correction. I have edited my earlier post with a note rather than…
Here for the analytics and not much else Replied, post #73 · Lounge › Introductions · 22 Jul 2026 · 4 likes This follows post #70 rather than contradicting it. Ongoing: you can post multiple introductions over time. If you return after a long break, reintroducing yourself is…
Ultrasound and skinfolds: operator dependence in practice Replied, post #65 · Outcomes › Body composition · 19 Jul 2026 · 0 likes Coming back to post #63, because the follow-up matters more than the original answer. DXA (dual-energy X-ray absorptiometry): the standard for body composition in…
Aggregate verification data across the directory, with caveats Replied, post #54 · Sourcing › Independent verification · 18 Jul 2026 · 3 likes This follows post #51 rather than contradicting it. I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The…
Publication patterns in the BPC-157 literature, examined Replied, post #38 · Compounds › Repair & healing peptides · 17 Jul 2026 · 8 likes Picking up post #35: that is the part I would want checked first. The distinction between "no evidence it works" and "evidence it does not work": we have the first for…
Alcohol: what is documented and what is folklore Replied, post #104 · Practice › Interactions · 10 Jul 2026 · 5 likes Oral medications versus time: if you take an oral medication 30 minutes before semaglutide (which slows gastric emptying), the delayed stomach emptying affects when and…
What a reversed-phase purity number actually is Replied, post #35 · Analytics › HPLC & UHPLC · 8 Jul 2026 · 10 likes Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #71 · Sourcing › Independent verification · 7 Jul 2026 · 0 likes PeptideMeter: purity analysis plus structured, dated supplier verification records. Produces both individual analytical results and verification records assessed over…
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #58 · Analytics › Home & field testing · 26 Jun 2026 · 33 likes I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
Request: a per-category review queue Replied, post #53 · Meta › Feature requests · 22 Jun 2026 · 14 likes Tracking: staff will update the status of feature requests (under consideration, planned, implemented, declined). Checking back lets you know the fate of your suggestion.
Why fasting instructions for oral semaglutide are not optional advice Replied, post #22 · Compounds › Oral incretins · 31 May 2026 · 6 likes The SOUL trial: cardiovascular outcomes trial for oral semaglutide in people with type 2 diabetes and cardiovascular disease or chronic kidney disease. It demonstrates…
Revisiting: Mean kinetic temperature explained without the mathematics Replied, post #6 · Practice › Storage & stability · 29 May 2026 · 26 likes post #5 is right about the mechanism and I think understates the practical bit. I want to gently push back on the reply above about storage extrapolation. The advice is…
A parcel stationary at a customs facility for nine days Replied, post #63 · Sourcing › Logistics · 25 May 2026 · 19 likes This follows post #60 rather than contradicting it. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still…
Tracking a shortage from primary sources rather than rumour Replied, post #19 · Access › Shortages · 23 May 2026 · 3 likes This follows post #16 rather than contradicting it. International supply chains: a shortage in one country does not mean shortage in another. That is why ordering from…
Personal import allowances, compared — a second dataset Replied, post #125 · Access › International · 18 May 2026 · 0 likes I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
A 10 mg vial reconstituted three different ways, compared Replied, post #19 · Practice › Reconstitution · 10 May 2026 · 23 likes Choosing a concentration on purpose rather than by accident: starting with "I want to draw 0.5 mL per dose" and working backward to the required concentration is more…
Request: show the solution author in the topic list — what changed since Replied, post #63 · Meta › Feature requests · 3 May 2026 · 14 likes Feature scope: some requests are for the site itself (search, filtering, navigation). Some are for the documentation (new topics, different formats). Scope helps…
Reading a home test result without over-claiming Replied, post #29 · Analytics › Home & field testing · 2 May 2026 · 4 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…
Type 2 diabetes and the largest part of the evidence base Replied, post #72 · Clinical › Comorbidities · 17 Apr 2026 · 17 likes Bariatric surgery history: altered anatomy after surgery affects absorption. That matters for oral medications and for reconstituted solutions. Discussing specific…
Reconstitution volumes that produce round numbers, tabulated Replied, post #92 · Practice › Reconstitution · 16 Apr 2026 · 8 likes Arithmetic step by step: a 5 mg vial with 2 mL of diluent gives (5 mg) / (2 mL) = 2.5 mg/mL. On a U-100 syringe at that concentration, 100 units = 1 mL = 2.5 mg, so…
Adducts: sodium, potassium, and the peak you did not expect — does this still hold? Replied, post #99 · Analytics › Mass spectrometry · 7 Apr 2026 · 8 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…
Micro-titration: a disputed topic, argued properly — one year on Replied, post #18 · Practice › Dosing & titration · 28 Mar 2026 · 11 likes Steady state means the plasma concentration is stable from dose to dose. That happens around 4 to 5 half-lives. Before that, the concentration is rising with each dose.…
Half-life, steady state, and accumulation worked through — a second dataset Replied, post #114 · Pharmacology › Pharmacokinetics · 24 Mar 2026 · 9 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Coming back to: What the published dose-response for semaglutide actually looks like… Replied, post #14 · Compounds › Semaglutide · 22 Mar 2026 · 0 likes The opalescent appearance in semaglutide solutions is occasionally noted and the mechanism is unclear. It does not appear to correlate with product failure in practice.…
Why a compound being unapproved is not the same as being illegal to possess Replied, post #70 · Sourcing › Regulatory · 21 Mar 2026 · 24 likes Why this category is maintained as documentation, not as recommendations: the goal is factual accuracy and sourcing, not endorsement of any specific regulatory position.
Why semaglutide's albumin binding is the whole reason weekly dosing works Replied, post #3 · marked as the solution · Compounds › Semaglutide · 4 Mar 2026 · 14 likes The STEP programme populations were selected: enrollment criteria required baseline body mass index over 30, no recent blood pressure crisis, no recent retinopathy, no…
[2026 update] A rising related-substance total over six months: degradation or method… Replied, post #63 · Analytics › Impurities & related substances · 18 Feb 2026 · 18 likes Worth separating two things that post #59 runs together. Disulfide formation: if a peptide contains cysteine, it can form disulfide bonds with itself or with other…
Second pass at: Pregnancy and pregnancy planning: contraindication and washout Replied, post #34 · Clinical › Special populations · 22 Jan 2026 · 29 likes Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did and when. The single most useful thing in your own…
A plateau that disappeared when I changed how I measured — the long version Started this topic · Outcomes › Progress reports · 11 Jan 2026 · 53 likes A plateau that disappeared when I changed how I measured — the long version — setting out what I have, and where I think it stops being reliable. Longitudinal report…
Substitution between formats during a shortage Replied, post #121 · Access › Shortages · 22 Dec 2025 · 0 likes Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did and when. The single most useful thing in your own…
About the Statistics category Replied, post #9 · Research Methods › Statistics · 17 Dec 2025 · 24 likes post #8 is right about the mechanism and I think understates the practical bit. For anyone arriving from a search: the marked solution above is the direct answer, and…
Second pass at: What "verified" means on our vendor pages, stated narrowly Replied, post #37 · Sourcing › Vendor reports · 21 Nov 2025 · 30 likes Lot matching: confirm the lot number on the certificate matches the lot number on the vial. A result from a different lot is not evidence about your vial.
Where to report an adverse event officially, by region — a second dataset Replied, post #54 · Safety › Adverse events · 25 Oct 2025 · 12 likes Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the…
Half-life, steady state, and accumulation worked through — a second dataset Replied, post #7 · Pharmacology › Pharmacokinetics · 21 Oct 2025 · 32 likes Volume of distribution: the theoretical volume the drug distributes into. For albumin-binding compounds, volume is reduced compared to drugs that do not bind protein.…
Follow-up: The lowest dose that does anything: is that a real question? Replied, post #65 · Practice › Dosing & titration · 19 Oct 2025 · 24 likes Splitting a weekly dose in two: the pharmacokinetic argument against is that you want the benefit of long half-life, which gives a slowly changing plasma level from a…
Payment mechanics and the recovery options that do not exist Replied, post #17 · Sourcing › Payments · 19 Oct 2025 · 0 likes Recurring billing: if a supplier sets up recurring billing by default, understanding the terms for cancellation is important before the first charge.
What a 2 ppm match establishes, and what it does not Replied, post #57 · Analytics › Mass spectrometry · 6 Oct 2025 · 0 likes Worth separating two things that post #53 runs together. Sample matrix effects: if a sample is dissolved in a complex matrix, other compounds in the matrix can suppress…
Temperature loggers worth the money — the long version Replied, post #45 · Devices › Cold chain · 24 Sep 2025 · 16 likes This follows post #42 rather than contradicting it. Freeze-thaw: some peptides tolerate freezing; others do not. Check your compound's labelling. Generally, repeated…
Revisiting: German, French and Dutch differences, compared Replied, post #70 · Regional › European Union · 9 Sep 2025 · 0 likes Cross-border purchase rules: buying a prescription in one EU country and bringing it home is complex. The substance is legal but crossing borders with it requires…
How to read a forest plot, properly, from scratch Replied, post #25 · Evidence › Trials · 8 Sep 2025 · 0 likes Coming back to post #23, because the follow-up matters more than the original answer. Open-label design: unblinded trials admit expectation effects. For weight-loss…
Second pass at: Why this subcategory is stricter about sourcing than most Replied, post #128 · Compounds › Secretagogues & GH axis · 3 Sep 2025 · 17 likes Coming back to post #126, because the follow-up matters more than the original answer. Evidence quality in the secretagogue literature is honestly weaker than in the…
[2026 update] Journal club: is percentage weight change the right endpoint? Replied, post #105 · Evidence › Journal club · 24 Aug 2025 · 6 likes On post #101 — agreed on the reasoning, with one qualification. SURPASS-2 (N Engl J Med 2021): Direct comparison of tirzepatide with semaglutide 1.0 mg. The 1.0 mg dose…
A comparison of home results against a laboratory result on the same vial Replied, post #22 · Analytics › Home & field testing · 7 Aug 2025 · 0 likes Coming back to post #20, because the follow-up matters more than the original answer. What you can use home tests for: confirmation that a solution contains peptide (as…
Managing an unplanned gap in supply — what changed since Replied, post #31 · Access › Shortages · 5 Aug 2025 · 2 likes Allocation and rationing: during severe shortages, suppliers might ration allocation to prescribers. Understanding rationing policies from your prescriber matters for…
A checklist for reading a certificate in under two minutes — does this still hold? Replied, post #27 · Analytics › COA interpretation · 28 Jul 2025 · 14 likes Amino acid analysis gives content: it hydrolyses the peptide and quantifies the residues. It measures the peptide content independent of chromatographic purity. Very…
Publishing an inconvenient result: a case study Replied, post #49 · Sourcing › Independent verification · 14 Jul 2025 · 13 likes Picking up post #46: that is the part I would want checked first. Medutest: combined purity and identity reporting. Appears throughout vendor documentation. Where a…
Revisiting: Early satiety becoming a problem rather than a benefit Started this topic · Practice › Side effects · 8 Jul 2025 · 29 likes On the subject in the title: Revisiting: Early satiety becoming a problem rather than a benefit Working notes rather than a conclusion. A question about technique…
Reading a regulatory notice rather than an article about it — what changed since Replied, post #32 · Sourcing › Regulatory · 2 Jul 2025 · 4 likes Compounding and pharmacy rules: some jurisdictions allow a pharmacy to compound a drug that is not on the market under specific conditions. The conditions are strict…
Insulin combinations and hypoglycaemia risk Replied, post #21 · Practice › Interactions · 26 Jun 2025 · 11 likes Supplements and herbs: many have no established interaction. Some do. If you are taking something unusual, checking a reference (like a pharmacist) is more useful than…
Reading a supplier's product description as a marketing document Replied, post #31 · Compounds › Other compounds · 8 Jun 2025 · 2 likes Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing. The correction was fair and I had…
Hepatic steatosis: what the MASH trial evidence supports Replied, post #51 · Clinical › Comorbidities · 28 May 2025 · 1 like PCOS and metabolic overlap: polycystic ovary syndrome has metabolic overlap with obesity and insulin resistance. Data on compounds in this class in PCOS specifically is…
Amylin analogue mechanism: satiety signalling separate from GLP-1 Replied, post #107 · Compounds › Cagrilintide & amylin analogues · 30 Apr 2025 · 13 likes Cagrilintide molecular characteristics: it is a synthetic amylin analogue, substituted to prevent the amyloidogenicity of human amylin. The sequence is short and…
Reading a trial's population section before its results — does this still hold? Replied, post #47 · Evidence › Trials · 28 Apr 2025 · 28 likes Absolute numbers, not just relative: a 30% relative reduction tells you the ratio but not the practical magnitude. The event rate in each arm and the difference between…
Coming back to: Sample size calculations, read backwards from the published number Replied, post #18 · Evidence › Trials · 28 Apr 2025 · 30 likes Dropout is information: high dropout rates can indicate tolerability problems or lower efficacy than the summary suggests. Where the analysis handled dropouts matters.…
Asking about a compound your prescriber has not heard of Replied, post #13 · Clinical › Prescriber conversations · 8 Apr 2025 · 5 likes Picking up post #10: that is the part I would want checked first. For anyone arriving from a search: the marked solution above is the direct answer, and the replies…
Delayed gastric emptying and oral medication absorption: which drugs matter Replied, post #37 · Practice › Interactions · 5 Apr 2025 · 4 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Splitting a vial for two laboratories: how to do it without ruining both Replied, post #13 · Sourcing › Independent verification · 3 Apr 2025 · 2 likes Service differences on vendor pages: Janoshik and Medutest results are measurements on vials. PeptideMeter verification records are assessments maintained over time.…
Comparators chosen for regulatory reasons rather than clinical ones — one year on Replied, post #5 · Evidence › Trials · 2 Apr 2025 · 28 likes Confounding in observational data: a third variable can explain an apparent association. In a randomised trial, randomisation balances unknown confounders. In…
Journal club: SURMOUNT-OSA and a hard endpoint in a soft field Replied, post #47 · Evidence › Journal club · 16 Mar 2025 · 7 likes SURMOUNT-OSA (N Engl J Med 2024): Tirzepatide in obstructive sleep apnoea, using an objective physiological endpoint. Notable because soft endpoints are avoided. Two…
Consistent declarations and why they matter more than clever ones Replied, post #131 · Sourcing › Logistics · 5 Mar 2025 · 2 likes I read post #129 twice before replying, because I had assumed the opposite. Documentation after arrival: photograph the parcel and its contents on arrival. If something…
Reconstituting a multi-strength kit without mixing yourself up Replied, post #40 · Practice › Reconstitution · 5 Mar 2025 · 13 likes I read post #38 twice before replying, because I had assumed the opposite. Reconstituting a multi-strength kit: if a kit contains 5 mg, 10 mg, 15 mg vials and you are…
An orphaned page with no inbound links Replied, post #13 · Meta › Wiki maintenance · 1 Mar 2025 · 4 likes Evidence synthesis: if you think a page should cover recent evidence or a new development, suggesting specific content helps the maintainer prioritise updates.
Second pass at: Gauge and length selection for subcutaneous injection Replied, post #27 · Devices › Syringes & needles · 5 Feb 2025 · 0 likes Reading units correctly: look at the marking from the side, not from above or below. The bottom of the plunger tip is the reading. Parallax error (wrong angle) is a…
[2026 update] Step therapy requirements and how to satisfy them Replied, post #104 · Access › Insurance & coverage · 4 Jan 2025 · 4 likes I read post #102 twice before replying, because I had assumed the opposite. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write…
What the published dose-response for semaglutide actually looks like above 2.4 mg — a… Replied, post #12 · Compounds › Semaglutide · 30 Dec 2024 · 4 likes post #11 answers the question as asked. The question underneath it is different. The opalescent appearance in semaglutide solutions is occasionally noted and the…
Pancreatitis history and the risk calculus — a second dataset Replied, post #18 · Safety › Contraindications · 30 Dec 2024 · 0 likes Disordered eating history: appetite suppression can trigger relapse in people with history of anorexia, bulimia, or other eating disorders. This is a relative…
Reading a preclinical wound-healing model and its relevance to a human tendon Replied, post #149 · Compounds › Repair & healing peptides · 26 Nov 2024 · 12 likes The distinction between "no evidence it works" and "evidence it does not work": we have the first for these compounds. That is genuinely different from the second and…
Converting between mg/mL and units per dose, both directions Replied, post #99 · Practice › Reconstitution · 22 Nov 2024 · 7 likes Coming back to post #97, because the follow-up matters more than the original answer. Arithmetic step by step: a 5 mg vial with 2 mL of diluent gives (5 mg) / (2 mL) =…
Revisiting: Melanocortin agonists: mechanism and the documented adverse profile Replied, post #121 · Compounds › Other compounds · 16 Nov 2024 · 14 likes Naming conventions for research peptides cause confusion because suppliers do not follow a standard. The same compound gets different names from different suppliers. If…
Second pass at: Buffers, pH and why a formulation is a formulation Replied, post #4 · Pharmacology › Formulation chemistry · 19 Oct 2024 · 0 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Second pass at: Albumin binding and how it produces a long half-life Replied, post #5 · Pharmacology › Pharmacokinetics · 16 Oct 2024 · 7 likes Fasting requirement for oral semaglutide: food and large fluid volumes reduce absorption. The fasting window (30 minutes before and 30 minutes after) is designed to…
Progressive overload when the scale is falling — one year on Replied, post #128 · Nutrition & Training › Resistance training · 6 Oct 2024 · 2 likes Intensity: using weights that allow 6 to 12 reps before fatigue is a reasonable range for preserving muscle. Heavier weights with lower reps can work but require more…
Gallbladder disease risk with rapid weight loss Replied, post #5 · Clinical › Comorbidities · 30 Aug 2024 · 8 likes post #4 is right about the mechanism and I think understates the practical bit. Obstructive sleep apnoea: SURMOUNT-OSA used an objective endpoint, the apnoea-hypopnoea…
Second pass at: Sodium, potassium and magnesium when intake drops Replied, post #45 · Nutrition & Training › Hydration & electrolytes · 17 Aug 2024 · 25 likes The very ordinary causes of week-two malaise: inadequate hydration, low sodium intake, too-rapid calorie deficit, and inadequate sleep are more common causes of fatigue…
Journal club: FLOW and the renal composite, component by component Replied, post #55 · Evidence › Journal club · 14 Jul 2024 · 0 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…