figure_review

TL2 Member · Haarlem, NL

UK-based. Mostly the access and pricing categories.

Joined 7 October 2024 · last posted 1d · groups: regional-uk

91 posts, newest first. Showing up to 150.

Selection into a registry and what it does to the estimate — a second dataset Replied, post #33 · Evidence › Study critique · 27 Jul 2026 · 31 likes Defending a paper against criticism: if the authors respond, they might clarify something the paper explained poorly. Their response might also miss your point. Either…
Coming back to: Preparing for an appointment: one page, three questions Replied, post #46 · Clinical › Prescriber conversations · 25 Jul 2026 · 18 likes What to bring: copies of relevant lab results, pharmacy records (to confirm doses actually taken), and records of any adverse effects you have experienced with other…
What I would want from a home test that does not exist yet — what changed since Replied, post #103 · Analytics › Home & field testing · 21 Jul 2026 · 1 like What physical quantity does the device measure? A colorimetric or lateral-flow method typically responds to a class of chemistry rather than to a specific molecule. It…
Hair shedding at month three: mechanism and time course — the long version Replied, post #50 · Practice › Side effects · 19 Jul 2026 · 0 likes This follows post #47 rather than contradicting it. Injection site reaction: local erythema, nodules, or induration at injection sites is reported by some people. Site…
Which categories are strict and which are relaxed, honestly Replied, post #26 · Start Here › Welcome · 18 Jul 2026 · 26 likes post #25 is right about the mechanism and I think understates the practical bit. The FAQ link in the sidebar is maintained and worth ten hours of forum browsing. It is…
Seven-day rolling means and why weekly readings mislead Replied, post #48 · Outcomes › Progress reports · 17 Jul 2026 · 7 likes post #47 is right about the mechanism and I think understates the practical bit. Protein intake and resistance training: both self-reported and therefore optimistic in…
Lean mass preservation: what the evidence supports — does this still hold? Replied, post #116 · Outcomes › Body composition · 17 Jul 2026 · 15 likes Ultrasound: thickness of subcutaneous fat at specific sites. Less standardised than DXA and operator-dependent. Useful as a supplementary measure but not as a primary…
Follow-up: How compounding permissions changed when supply normalised Replied, post #6 · Sourcing › Regulatory · 10 Jul 2026 · 0 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…
A site rotation scheme that is easy enough to actually follow Replied, post #107 · Practice › Administration · 6 Jul 2026 · 15 likes Angle of injection: 90 degrees into pinched tissue ensures subcutaneous placement. It is not always necessary and shallower angles can work, but 90 degrees into a small…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #59 · Sourcing › Independent verification · 2 Jul 2026 · 22 likes Worth separating two things that post #55 runs together. Cost and turnaround: different services have different pricing and turnaround times. Janoshik's turnaround is…
How shortages have affected compounding permissions Replied, post #6 · Access › Shortages · 30 Jun 2026 · 9 likes post #5 is right about the mechanism and I think understates the practical bit. Managing an unplanned gap: if a shortage causes a gap in treatment, the questions are…
Secretagogues and glucose tolerance: the mechanistic concern Replied, post #49 · Compounds › Secretagogues & GH axis · 25 Jun 2026 · 24 likes Reading a rodent study on a secretagogue without over-extrapolating: rodent studies can show a mechanism is plausible. They cannot show magnitude of effect in humans or…
Primary endpoint hierarchies and why order matters — one year on Replied, post #25 · Evidence › Trials · 25 Jun 2026 · 14 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…
Named, unnamed and unspecified impurities as regulatory categories — the long version Replied, post #18 · Analytics › Impurities & related substances · 23 Jun 2026 · 0 likes Worth separating two things that post #14 runs together. Deletion sequences (incomplete coupling during synthesis): lower in mass by one residue. Chromatographically…
Revisiting: The report format the maintainers ask for, and why each field is there Replied, post #85 · Sourcing › Vendor reports · 16 Jun 2026 · 3 likes post #84 answers the question as asked. The question underneath it is different. Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the…
Submitting a sample: the process end to end Replied, post #20 · Sourcing › Independent verification · 16 Jun 2026 · 4 likes post #19 is right about the mechanism and I think understates the practical bit. I disagree with the reply above, and I think the disagreement is substantive rather…
What to include when your question involves a chromatogram — one year on Replied, post #36 · Start Here › How to Ask · 13 Jun 2026 · 0 likes This follows post #33 rather than contradicting it. Context that matters: compound, how long in, current dose, relevant history. Context that does not matter: how you…
Carryover and the ghost peak from last week's standard — what changed since Replied, post #25 · Analytics › HPLC & UHPLC · 12 Jun 2026 · 15 likes On post #21 — agreed on the reasoning, with one qualification. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly…
Second pass at: Sleep apnoea improving and the equipment implications Replied, post #56 · Wellbeing › Sleep · 11 Jun 2026 · 18 likes post #55 is right about the mechanism and I think understates the practical bit. When sleep problems need attention: if sleep does not improve as weight loss continues…
Coming back to: A community side-effect dataset, with its response rate and biases Replied, post #76 · Data & Tools › Datasets · 6 Jun 2026 · 3 likes Temporal bias: older data in a dataset might reflect conditions (supplier, formulation, context) that have changed. Newer data is more current.
What TRIUMPH is designed to answer, and why we should not pre-empt it — does this still… Replied, post #28 · Compounds › Retatrutide · 30 May 2026 · 7 likes Dose escalation in the published trials: the protocols started at lower doses and escalated by defined steps. The step sizes are documented and they may or may not…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #29 · Analytics › HPLC & UHPLC · 19 May 2026 · 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…
What I would want from a home test that does not exist yet — what changed since Replied, post #13 · Analytics › Home & field testing · 7 May 2026 · 0 likes Colorimetric tests: colour intensity correlates with concentration, but the relationship is non-linear at extremes and the correlation depends on the exact conditions…
The 2.5 mg starting dose is not a therapeutic dose — why that matters Replied, post #100 · Compounds › Tirzepatide · 27 Apr 2026 · 23 likes Mass and charge states: tirzepatide is about 4813.5 Da and on an electrospray instrument you would expect to see charge states mostly in the 2+ to 4+ range, the same as…
Follow-up: State-level differences that actually matter Replied, post #4 · Regional › North America · 3 Apr 2026 · 0 likes post #3 answers the question as asked. The question underneath it is different. I disagree with the reply above, and I think the disagreement is substantive rather than…
[2026 update] Thyroid function tests during substantial weight change Replied, post #28 · Clinical › Bloodwork · 1 Apr 2026 · 8 likes Picking up post #25: that is the part I would want checked first. Time of day: some biomarkers vary across the day. Cortisol in the morning differs from cortisol in the…
Five questions in one post gets you one answer — how to split them Replied, post #44 · Start Here › How to Ask · 31 Mar 2026 · 30 likes Units. Everything needs units. This is why we ask every single time. I have seen the same arithmetic done three different ways depending on whether the person was…
A supplier who responds to a discrepancy with silence — what changed since Replied, post #23 · Sourcing › Red flags · 29 Mar 2026 · 8 likes Inability to trace lots: if you ask "where was this synthesised, by whom, under what conditions" and cannot get a clear answer, that is a red flag. Traceability is not…
Follow-up: Reconciling a label claim with a content assay Replied, post #11 · Analytics › COA interpretation · 22 Mar 2026 · 0 likes Counter-ion form is crucial: peptides are isolated as salts, most often trifluoroacetate from reversed-phase purification or acetate after salt exchange. The…
An ABAB design with a data table and honest limitations — a second dataset Replied, post #76 · Research Methods › N-of-1 designs · 18 Mar 2026 · 0 likes Picking up post #73: that is the part I would want checked first. Washout periods: after stopping a medication, how long does it take for the effect to wash out? For…
Introducing myself: pharmacist, sceptic, reluctant participant — one year on Replied, post #67 · Lounge › Introductions · 14 Mar 2026 · 0 likes Lurking first: if you want to introduce yourself after lurking a bit, that is fine. You do not have to introduce yourself before your first technical post either.
The most useful thing you learned here that was not the answer you came for Replied, post #27 · Lounge › Off topic · 14 Mar 2026 · 21 likes Newer drugs and mechanisms: when a new drug launches or a new mechanism is discovered, the Lounge is a place to discuss the news and speculate before hard data exists.
Rotating between abdomen, thigh and upper arm: absorption differences — one year on Replied, post #31 · Practice › Administration · 11 Mar 2026 · 32 likes Bleeding at the injection site: normal and usually minimal. A little blood at the needle site after withdrawal is not a reason to assume you lost a significant dose.…
Reading a preclinical wound-healing model and its relevance to a human tendon — a second… Replied, post #8 · Compounds › Repair & healing peptides · 7 Mar 2026 · 0 likes The absence of adequately powered published randomised human trials is the central fact about BPC-157. This site states that plainly rather than hedging. Mechanistic…
Injection discomfort: needle gauge, volume, temperature, technique Replied, post #27 · Practice › Administration · 16 Feb 2026 · 0 likes On post #23 — agreed on the reasoning, with one qualification. Angle of injection: 90 degrees into pinched tissue ensures subcutaneous placement. It is not always…
Run-in periods and the population they select — the long version Replied, post #2 · Evidence › Trials · 18 Jan 2026 · 15 likes Intent-to-treat versus per-protocol: ITT includes everyone assigned regardless of whether they took the drug. Per-protocol includes only those who completed it as…
Half-life, steady state, and accumulation worked through — a second dataset Replied, post #57 · Pharmacology › Pharmacokinetics · 11 Jan 2026 · 0 likes post #56 is right about the mechanism and I think understates the practical bit. Fasting requirement for oral semaglutide: food and large fluid volumes reduce…
Promotion criteria, and the one that stops most nominations — the long version Replied, post #121 · Documentation › Doc review · 28 Dec 2025 · 23 likes Citation checking: if a maintained page cites a paper, the citation should match what the paper actually says. If you notice a mismatch, post it here.
Specification in the result column: why that is a meaningful error Replied, post #84 · Analytics › COA interpretation · 6 Dec 2025 · 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…
Heterogeneity as information rather than as a nuisance Replied, post #14 · Evidence › Meta-analyses · 2 Dec 2025 · 2 likes post #13 is right about the mechanism and I think understates the practical bit. Inclusion and exclusion criteria: a meta-analysis is only as good as its inclusion…
Documentation that appears only after payment Replied, post #94 · Sourcing › Red flags · 2 Dec 2025 · 0 likes Coming back to post #92, because the follow-up matters more than the original answer. Safety documentation absent: a supplier that cannot provide information about…
Second pass at: The topic list is dense — is that deliberate? Replied, post #6 · marked as the solution · Meta › Site feedback · 22 Nov 2025 · 7 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…
Heterogeneity as information rather than as a nuisance Replied, post #2 · Evidence › Meta-analyses · 16 Nov 2025 · 5 likes Study quality and weighting: some meta-analyses weight all studies equally; others weight by study size or study quality. The choice affects the result and should be…
Revisiting: Aggregates and why a purity assay may miss them entirely Replied, post #17 · Analytics › Impurities & related substances · 16 Nov 2025 · 0 likes On post #13 — agreed on the reasoning, with one qualification. Incomplete deprotection: mass higher by the protecting group mass. Usually markedly later eluting. A…
Reading SURMOUNT-1 without the press release — one year on Replied, post #22 · Compounds › Tirzepatide · 15 Nov 2025 · 21 likes Half-life difference: tirzepatide is about 5 days versus semaglutide's week-long. Practically, that means steady state is reached slightly faster and the post-dose…
Coming back to: Why most self-reports here are not experiments, and that is fine Replied, post #19 · Research Methods › N-of-1 designs · 14 Nov 2025 · 0 likes Picking up post #16: that is the part I would want checked first. Stopping rules: decide in advance when you will stop measuring (after a defined duration, after a…
[2026 update] What steady state means for the decision to escalate Replied, post #54 · Practice › Dosing & titration · 10 Nov 2025 · 10 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.…
NHS criteria and how they are applied in practice — the long version Replied, post #16 · Regional › UK & Ireland · 8 Nov 2025 · 24 likes Occupational health screening: some UK occupations require medical checks. Disclosure of weight-loss medication might be relevant to employment screening; understand…
A calculator that gives a right answer to the wrong question — does this still hold? Replied, post #22 · Data & Tools › Calculators · 29 Oct 2025 · 2 likes post #21 answers the question as asked. The question underneath it is different. The calculators maintained on this site are open-source and verifiable. They are…
Follow-up: Why the titration planner refuses to produce a schedule below a floor Replied, post #102 · Data & Tools › Calculators · 2 Sep 2025 · 0 likes I read post #100 twice before replying, because I had assumed the opposite. The calculators maintained on this site are open-source and verifiable. They are intended to…
Semaglutide versus liraglutide head to head: reading STEP 8 carefully Replied, post #49 · Compounds › Semaglutide · 28 Aug 2025 · 3 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.…
Second pass at: A history of disordered eating: proceeding carefully Replied, post #118 · Wellbeing › Mental health · 25 Aug 2025 · 0 likes Motivation and expectation: starting with clear motivation and realistic expectations about what will happen and when helps with psychological adjustment.
The most useful thing you learned here that was not the answer you came for — a second… Replied, post #2 · Lounge › Off topic · 21 Aug 2025 · 8 likes Humour: light, relevant humour is welcome. Cruel humour targeting individuals or groups is not.
Coming back to: What published stability data actually covers, and what it does not Replied, post #114 · Practice › Storage & stability · 16 Aug 2025 · 0 likes This follows post #111 rather than contradicting it. I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The…
Follow-up: Why the titration planner refuses to produce a schedule below a floor Replied, post #65 · Data & Tools › Calculators · 28 Jul 2025 · 8 likes Offline use: all calculators are written in JavaScript and can be downloaded and run offline if desired. They do not require internet connectivity to function.
Sodium, potassium and magnesium when intake drops Replied, post #25 · Nutrition & Training › Hydration & electrolytes · 21 Jun 2025 · 1 like 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.
The CagriSema phase 2 paper and what a fixed combination buys — the long version Replied, post #100 · Compounds › Cagrilintide & amylin analogues · 15 Jun 2025 · 27 likes Reading the phase 2 paper: it establishes tolerability and efficacy in a selected population on a defined dose escalation. It does not establish the lowest effective…
What SELECT changed about how semaglutide is discussed, and what it did not Replied, post #129 · Compounds › Semaglutide · 22 May 2025 · 4 likes On post #125 — agreed on the reasoning, with one qualification. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly…
Journal club: indirect comparison between two programmes, defended and attacked — one… Replied, post #9 · Evidence › Journal club · 21 May 2025 · 7 likes SURMOUNT-1 (N Engl J Med 2022): Tirzepatide obesity trial. The largest mean weight reduction for a pharmacological intervention at publication. Read the categorical…
Journal club: SURMOUNT-4 and continuation versus withdrawal — a second dataset Replied, post #28 · Evidence › Journal club · 7 May 2025 · 7 likes Worth separating two things that post #24 runs together. TRIUMPH (ongoing): Retatrutide phase 3. No results yet. Nothing should be attributed to it because it has not…
Reading a supplier's product description as a marketing document Replied, post #19 · Compounds › Other compounds · 4 May 2025 · 21 likes Worth separating two things that post #15 runs together. Melanocortin agonists: mechanism involves the melanocortin-4 receptor pathway that regulates appetite. The…
Counter-ion content and its effect on measured mass Replied, post #26 · Analytics › Mass spectrometry · 27 Apr 2025 · 1 like 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…
Second pass at: Journal club: STEP 4 and what a withdrawal design can prove Replied, post #11 · Evidence › Journal club · 19 Apr 2025 · 33 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.
The C-cell question: rodent findings and their human context Replied, post #5 · Compounds › Semaglutide · 4 Apr 2025 · 0 likes post #4 is right about the mechanism and I think understates the practical bit. The STEP programme populations were selected: enrollment criteria required baseline body…
Reconstituting a multi-strength kit without mixing yourself up Replied, post #52 · Practice › Reconstitution · 2 Apr 2025 · 7 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…
Journal club: STEP 4 and what a withdrawal design can prove Replied, post #14 · Evidence › Journal club · 24 Mar 2025 · 1 like Critical appraisal template: (1) What did the trial set out to estimate? (2) Could the design answer that question? (3) Was the population sufficiently similar to your…
Why mass spectrometry cannot tell you about an epimer Replied, post #83 · Analytics › Mass spectrometry · 9 Mar 2025 · 5 likes Worth separating two things that post #79 runs together. Two things before anyone answers the substance. First, the context in the first post is clear and specific.…
Pharmaceutical compounding rules, summarised from primary sources Replied, post #13 · Sourcing › Regulatory · 27 Feb 2025 · 2 likes post #12 is right about the mechanism and I think understates the practical bit. Research-use-only status is a legal classification, not a safety classification. It…
Biased agonism: a real phenomenon, an over-used explanation Replied, post #3 · Pharmacology › Receptor biology · 23 Feb 2025 · 7 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.
Consistent declarations and why they matter more than clever ones Replied, post #51 · Sourcing › Logistics · 18 Feb 2025 · 6 likes Picking up post #48: that is the part I would want checked first. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the…
Follow-up: Tesamorelin has an approved indication — what that changes about the evidence Replied, post #11 · Compounds › Secretagogues & GH axis · 15 Feb 2025 · 1 like Coming back to post #9, because the follow-up matters more than the original answer. GHRH analogues versus ghrelin mimetics are often conflated but they are different…
Micronutrient status when intake falls substantially — a second dataset Replied, post #8 · Clinical › Bloodwork · 24 Jan 2025 · 4 likes This follows post #5 rather than contradicting it. Analytical imprecision: any measurement has an error margin. A small difference in consecutive tests is usually…
Scheduled maintenance and what will be unavailable Replied, post #16 · Meta › Announcements · 15 Jan 2025 · 0 likes On post #12 — agreed on the reasoning, with one qualification. Questions welcomed: if an announcement is unclear, asking for clarification is welcome. Staff will…
Follow-up: Individual participant data versus aggregate data Replied, post #44 · Evidence › Meta-analyses · 9 Jan 2025 · 4 likes Fixed-effects versus random-effects models: fixed-effects assumes all studies are estimating the same thing and variation is sampling error. Random-effects assumes…
Oxidation pathways for methionine and tryptophan Replied, post #63 · Analytics › Impurities & related substances · 31 Dec 2024 · 21 likes post #62 is right about the mechanism and I think understates the practical bit. Residual solvents: traces of solvents used in purification. These are usually tested by…
A promotion I argued against, and why I lost Replied, post #44 · Documentation › Doc review · 29 Dec 2024 · 28 likes Revision disputes: if you disagree with an edit a maintainer made to a page, discuss it here. The goal is accuracy and clarity, not authorship.
Body image changing more slowly than the body Replied, post #58 · Wellbeing › Mental health · 17 Dec 2024 · 3 likes Worth separating two things that post #54 runs together. When to involve a professional: if mood changes are persistent, deepen over weeks, or interfere with function,…
[2026 update] Step therapy requirements and how to satisfy them Replied, post #57 · Access › Insurance & coverage · 6 Dec 2024 · 20 likes Picking up post #54: 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…
When to suspect the method rather than the sample Replied, post #43 · Analytics › Method validation · 28 Nov 2024 · 14 likes Transfer between laboratories: a method can be transferred from one lab to another, but the receiving lab needs to demonstrate that they can achieve the same…
Coming back to: When to suspect the method rather than the sample Replied, post #3 · Analytics › Method validation · 27 Nov 2024 · 22 likes Robustness: the method gives consistent results when minor parameters vary. Tested by deliberately varying pH, temperature, flow rate, and mobile phase composition…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #3 · Data & Tools › Calculators · 24 Nov 2024 · 0 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…
Tracking semaglutide's approved indications across jurisdictions, dated — does this… Replied, post #36 · Compounds › Semaglutide · 21 Nov 2024 · 0 likes post #35 answers the question as asked. The question underneath it is different. The SELECT trial changed the positioning because it was the first cardiovascular…
EMA product information as a primary source — does this still hold? Replied, post #58 · Regional › European Union · 16 Nov 2024 · 28 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…
Promotion criteria, and the one that stops most nominations Replied, post #93 · Documentation › Doc review · 23 Oct 2024 · 17 likes Interdependencies: if updating one page requires updating related pages, posting that connection here helps the maintainers see the scope of work.
Why a preprint's supplementary material is often the best part Replied, post #23 · Evidence › Preprints · 14 Sep 2024 · 33 likes I read post #21 twice before replying, because I had assumed the opposite. Preprints for speed: some important preliminary findings are posted as preprints to…
Splitting a vial for two laboratories: how to do it without ruining both — what changed… Replied, post #56 · Sourcing › Independent verification · 13 Sep 2024 · 1 like When results are inconclusive: if a testing service reports "insufficient to verify" on a documentation review, that is not a negative finding about the product. It…
Identical chromatograms across two different lots Replied, post #20 · Sourcing › Red flags · 30 Aug 2024 · 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…
Chronic kidney disease and the FLOW result Replied, post #25 · Clinical › Comorbidities · 18 Aug 2024 · 10 likes Picking up post #22: that is the part I would want checked first. Cardiovascular disease: several compounds have cardiovascular outcome trials. SELECT was in people…
Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #5 · Evidence › Journal club · 27 Jul 2024 · 1 like SELECT (N Engl J Med 2023): Semaglutide cardiovascular outcomes without diabetes. The first outcome trial in people without diabetes, which decoupled the cardiovascular…
Cold packs, phase-change material, and what survives ten days Replied, post #38 · Sourcing › Logistics · 24 Jun 2024 · 3 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…
The mass-error checker and its intended scope Replied, post #54 · Data & Tools › Calculators · 16 Jun 2024 · 29 likes The calculators maintained on this site are open-source and verifiable. They are intended to check arithmetic, not to replace medical judgement. Using them is optional…