f.rasmussen

TL2 Moderator · Setúbal

Contributes reviews on supplier material. Based in Setúbal.

Joined 16 March 2025 · last posted 22h

72 posts, newest first. Showing up to 150.

Revisiting: The best-written scientific paper you have read Replied, post #120 · Lounge › Off topic · 27 Jul 2026 · 16 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…
Why the Start Here categories exist, and what they are not for Replied, post #5 · Start Here › Welcome · 16 Jul 2026 · 5 likes Marked solutions are the site's way of saying that someone asked a good question and someone else gave an answer that actually worked. It is not a competition and it…
Coming back to: Preparing for an appointment: one page, three questions Replied, post #5 · Clinical › Prescriber conversations · 16 Jul 2026 · 1 like Clarifying indication: if a compound is approved for diabetes but you have obesity without diabetes, clarify whether your clinician considers this off-label use and…
Follow-up: The most useful thing you learned here that was not the answer you came for Replied, post #23 · Lounge › Off topic · 11 Jul 2026 · 27 likes Picking up post #20: that is the part I would want checked first. Personal stories: if you want to talk about what led you to this compound, your journey, or how the…
Reading a home test result without over-claiming Replied, post #108 · Analytics › Home & field testing · 6 Jul 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…
Blinding yourself: practical methods and their limits — the long version Replied, post #8 · Research Methods › N-of-1 designs · 4 Jul 2026 · 1 like Stopping rules: decide in advance when you will stop measuring (after a defined duration, after a defined number of measurements, or after a defined condition is met).…
Muscle cramps: the ordinary causes before the exotic ones — a second dataset Replied, post #23 · Practice › Side effects · 1 Jul 2026 · 4 likes Injection site reaction: local erythema, nodules, or induration at injection sites is reported by some people. Site rotation, avoiding reinjection into the same area…
An 18-month record including the parts that went badly Replied, post #47 · Outcomes › Progress reports · 21 Jun 2026 · 1 like Coming back to post #45, because the follow-up matters more than the original answer. Measurement noise: day-to-day body mass varies by more than a kilogram on…
Peak-to-trough ratio at steady state for a weekly agent — the long version Replied, post #22 · Pharmacology › Pharmacokinetics · 10 Jun 2026 · 14 likes Hepatic metabolism: the degree to which each compound is hepatically metabolised versus renally cleared is known but varies. Severe liver disease changes clearance.
Second pass at: Which categories are strict and which are relaxed, honestly Replied, post #67 · Start Here › Welcome · 1 Jun 2026 · 0 likes Off-topic posts that do not belong here belong in the Lounge instead. You are not in trouble if a moderator moves your post — they are just routing it to the right…
Reference intervals: how they are constructed and why one in twenty flags — does this… Started this topic · Clinical › Bloodwork · 29 May 2026 · 7 likes Asking directly, because I could not find a straight answer: Reference intervals: how they are constructed and why one in twenty flags — does this still hold? General…
Hair shedding at month three: mechanism and time course — the long version Replied, post #16 · Practice › Side effects · 24 May 2026 · 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…
0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #44 · Devices › Syringes & needles · 18 May 2026 · 21 likes This follows post #41 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…
Coming back to: Time to steady state after a dose increase Replied, post #53 · Pharmacology › Pharmacokinetics · 14 May 2026 · 8 likes This follows post #50 rather than contradicting it. Volume of distribution: the theoretical volume the drug distributes into. For albumin-binding compounds, volume is…
Follow-up: Search filters: what is missing Replied, post #84 · Meta › Site feedback · 23 Apr 2026 · 9 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…
Pinch or no pinch, and how needle length changes the answer — the long version Replied, post #46 · Practice › Administration · 18 Apr 2026 · 13 likes Pinch or no pinch: the decision depends on needle length and on your own anatomy. A longer needle (8 mm and up) reaches subcutaneous tissue easily without a pinch. A…
Follow-up: I have no scientific background — can I still follow the analytics categories? Replied, post #8 · Start Here › Welcome · 11 Apr 2026 · 4 likes On post #4 — agreed on the reasoning, with one qualification. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you…
Revisiting: Drawing up with one needle and injecting with another Started this topic · Practice › Administration · 30 Mar 2026 · 40 likes Revisiting: Drawing up with one needle and injecting with another Writing it up because I had to work it out twice and would rather nobody else did. Practical question…
Journal club: orforglipron phase 2 and the non-peptide question Replied, post #26 · Evidence › Journal club · 29 Mar 2026 · 11 likes FLOW (N Engl J Med 2024): Semaglutide renal outcomes in type 2 diabetes and chronic kidney disease. Stopped early for efficacy. Component-by-component analysis is…
Reading a preclinical wound-healing model and its relevance to a human tendon — a second… Replied, post #42 · Compounds › Repair & healing peptides · 12 Mar 2026 · 2 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…
Stepping down deliberately, and how to do it without losing progress Replied, post #71 · Practice › Dosing & titration · 9 Mar 2026 · 13 likes post #70 is right about the mechanism and I think understates the practical bit. How the published trials escalated: they used specific step sizes and intervals. The…
Revisiting: Maintainer handover: how it works Replied, post #11 · Meta › Wiki maintenance · 22 Feb 2026 · 0 likes post #10 answers the question as asked. The question underneath it is different. Authority: if you think a page needs input from someone with specific expertise,…
Storing lyophilised material long term: what governs the shelf life Replied, post #64 · Practice › Storage & stability · 14 Feb 2026 · 18 likes Coming back to post #62, because the follow-up matters more than the original answer. Published stability data applies specifically to the formulation studied, under…
Revisiting: Sample handling between despatch and injection Replied, post #8 · Analytics › Method validation · 26 Jan 2026 · 15 likes Precision and repeatability: within-run and between-run variability of the method. Acceptance criterion is typically a relative standard deviation of ≤2% for area…
DXA precision and the least significant change for lean mass Replied, post #64 · Outcomes › Body composition · 12 Dec 2025 · 9 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…
Lurking for two months before posting: was that the right call? Replied, post #72 · Start Here › Welcome · 21 Nov 2025 · 27 likes This follows post #69 rather than contradicting it. Trust levels accumulate over time and they give you access to small things like the ability to edit your own posts…
Persistent vomiting and the threshold for seeking help Replied, post #68 · Safety › Adverse events · 13 Nov 2025 · 12 likes Coming back to post #66, because the follow-up matters more than the original answer. Severe gastrointestinal events: persistent vomiting, abdominal pain out of…
Older adults, sarcopenia risk, and the trade-off nobody quantifies — the long version Replied, post #41 · Clinical › Special populations · 26 Oct 2025 · 18 likes Adolescents: a distinct evidence base exists. The compounds are not approved for routine adolescent obesity but are being studied. Adolescent physiology and psychology…
Comparing my trajectory with the trial curves, carefully Replied, post #61 · Outcomes › Progress reports · 13 Oct 2025 · 0 likes This follows post #58 rather than contradicting it. Rate of change: reporting progress as "lost 5 kg in 12 weeks" is more useful than "currently at 82 kg" because the…
Cagrilintide's dosing interval and the pharmacokinetics behind it Replied, post #63 · Compounds › Cagrilintide & amylin analogues · 4 Oct 2025 · 0 likes Amylin signalling is distinct from GLP-1 signalling. Amylin slows gastric emptying and promotes satiety through a different receptor and different neural pathways. The…
What this community means by "a source", in practical terms Replied, post #115 · Start Here › Welcome · 15 Sep 2025 · 15 likes The FAQ link in the sidebar is maintained and worth ten hours of forum browsing. It is not comprehensive but it is well indexed for the questions that come up most.
Needle changes between doses on a reusable pen Replied, post #32 · Devices › Pens & autoinjectors · 1 Sep 2025 · 32 likes Pen confusion between compounds: if you are using multiple pens or alternating pens, confirming you have the correct pen before injection prevents administration…
Immortal time bias in a claims-database study Replied, post #32 · Evidence › Study critique · 28 Aug 2025 · 3 likes Confounding: in observational data, is there a third variable that explains the apparent association? In randomised data, randomisation should balance unknown…
Are there stupid questions here? A staff answer, at length Replied, post #112 · Start Here › Welcome · 25 Aug 2025 · 25 likes The compound and evidence pages are updated regularly and they are worth reading when you are new. They answer the meta questions like "do we have data on this" and…
Second pass at: Why this subcategory is stricter about sourcing than most Replied, post #74 · Compounds › Secretagogues & GH axis · 18 Aug 2025 · 19 likes What a well-designed human trial of a secretagogue would look like: randomised, placebo-controlled, adequate sample size, IGF-1 as primary outcome, muscle and strength…
Coming back to: Why quantitation is the hard part, not detection Replied, post #48 · Analytics › Home & field testing · 7 Aug 2025 · 4 likes Lateral-flow devices: like a rapid COVID test. They have a reagent strip and produce a colour result. They are quick but not precise and not intended for quantitative…
A ten-fold dose error caught before injection — one year on Replied, post #11 · Devices › Syringes & needles · 1 Aug 2025 · 0 likes Worth separating two things that post #7 runs together. Syringe barrel size: common sizes are 0.3 mL, 0.5 mL, and 1.0 mL. Smaller barrels are more legible for small…
Are there stupid questions here? A staff answer, at length Replied, post #18 · Start Here › Welcome · 27 Jul 2025 · 9 likes Nothing here requires expertise. The experienced members here got that way by posting questions, not by knowing the answer before they showed up. If you know something…
Detection wavelength and why 214 nm and 280 nm disagree Replied, post #23 · Analytics › HPLC & UHPLC · 25 Jul 2025 · 22 likes On integration: where the baseline is drawn matters more than most people realise. On a clean chromatogram with well-resolved peaks the choice is inconsequential. On a…
Airline travel with a temperature-sensitive injectable — what changed since Replied, post #53 · Devices › Cold chain · 21 Jul 2025 · 2 likes Picking up post #50: that is the part I would want checked first. Reconstituted solutions: once reconstituted, solutions are less stable than lyophilised powder.…
Triple agonism: additive, synergistic, or neither? Replied, post #67 · Compounds › Retatrutide · 13 Jul 2025 · 11 likes Worth separating two things that post #63 runs together. Mass and identity: a report on retatrutide should state the mass detected by LC-MS, not assume a theoretical…
Reading a supplier's product description as a marketing document Replied, post #43 · Compounds › Other compounds · 10 Jul 2025 · 0 likes post #42 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…
Revisiting: German, French and Dutch differences, compared Replied, post #40 · Regional › European Union · 2 Jul 2025 · 7 likes Italy: AIFA controls reimbursement through a note system. Weight-management indications have not attracted public reimbursement. Regional health authorities add further…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly Replied, post #119 · Compounds › Tirzepatide · 25 Jun 2025 · 24 likes SURMOUNT-1 reported weight reduction of a magnitude that was the largest for a pharmacological intervention at that time of publication. It also reported a clear dose…
Why fasting instructions for oral semaglutide are not optional advice — does this still… Replied, post #47 · Compounds › Oral incretins · 13 Jun 2025 · 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…
The CagriSema phase 2 paper and what a fixed combination buys — the long version Replied, post #43 · Compounds › Cagrilintide & amylin analogues · 8 Jun 2025 · 19 likes Worth separating two things that post #39 runs together. Is synergy the right word for the combination data? A phase 2 trial cannot establish whether effects are…
Journal club: SURMOUNT-1, read without the press release Replied, post #128 · Evidence › Journal club · 1 Jun 2025 · 1 like SOUL (N Engl J Med 2025): Oral semaglutide cardiovascular outcomes. Extends the cardiovascular evidence to the oral formulation. Note that oral bioavailability is lower…
Pregnancy as an absolute contraindication Replied, post #100 · Safety › Contraindications · 20 May 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…
Revisiting: Filter needles: when they help and what they cost you Replied, post #12 · Devices › Syringes & needles · 13 Apr 2025 · 8 likes Coming back to post #10, because the follow-up matters more than the original answer. Dead volume: residual liquid in the hub and needle after withdrawal. Typical…
[2026 update] Cardiovascular risk: reading the outcome trials as a set Replied, post #16 · Clinical › Comorbidities · 11 Apr 2025 · 0 likes This follows post #13 rather than contradicting it. PCOS and metabolic overlap: polycystic ovary syndrome has metabolic overlap with obesity and insulin resistance.…
Second pass at: A history of disordered eating: proceeding carefully Replied, post #32 · Wellbeing › Mental health · 11 Apr 2025 · 19 likes This follows post #29 rather than contradicting it. Identity and self-image: for some people, weight and body size are central to identity. Large change to body size…
Documenting a supplier's response to a discrepancy — does this still hold? Started this topic · Sourcing › Vendor reports · 16 Mar 2025 · 22 likes Documenting a supplier's response to a discrepancy — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below.…
BPC-157: what the rodent literature actually shows, and what it does not — a second… Replied, post #21 · Compounds › Repair & healing peptides · 7 Mar 2025 · 21 likes Stability of BPC-157 in solution: what has been measured in published work covers specific formulations under specific conditions. Extrapolating to a reconstituted…
Consistent declarations and why they matter more than clever ones Replied, post #143 · Sourcing › Logistics · 7 Mar 2025 · 33 likes Declaring contents accurately: declaring accurately reduces intervention risk. A declaration of "peptide research chemical, 5 grams" is better than "vitamin" or "other"…
Canadian access and provincial variation Replied, post #63 · Regional › North America · 7 Feb 2025 · 33 likes Provincial formularies in Canada are published and are the correct source for coverage information. Coverage for weight management is less common than for diabetes.
Research-use-only status: what it means legally and practically — a second dataset Replied, post #78 · Compounds › Other compounds · 1 Feb 2025 · 8 likes I read post #76 twice before replying, because I had assumed the opposite. AOD-9604 is a fragment of human growth hormone and has been discussed as a potential…
What a seizure notice actually says Replied, post #28 · Sourcing › Logistics · 28 Jan 2025 · 0 likes This follows post #25 rather than contradicting it. Reshipment after seizure: if a parcel is seized, some suppliers will reship; others will not. That is a supplier…
[2026 update] New subcategory: rationale and scope Replied, post #158 · Meta › Announcements · 17 Jan 2025 · 23 likes Picking up post #155: 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…
Coming back to: When to suspect the method rather than the sample Replied, post #79 · Analytics › Method validation · 15 Dec 2024 · 0 likes System suitability: injections run at the start of a batch to establish that the instrument and column are performing. Acceptance criteria typically include replicate…
Journal club: SURMOUNT-1, read without the press release Replied, post #23 · Evidence › Journal club · 5 Dec 2024 · 7 likes SOUL (N Engl J Med 2025): Oral semaglutide cardiovascular outcomes. Extends the cardiovascular evidence to the oral formulation. Note that oral bioavailability is lower…
Second pass at: A field-by-field walk through a certificate of analysis Replied, post #130 · Analytics › COA interpretation · 26 Nov 2024 · 4 likes I read post #128 twice before replying, because I had assumed the opposite. Purity and content are different measurements: purity tells you what proportion of the…
TB-500 and thymosin beta-4: the fragment versus the protein — does this still hold? Replied, post #6 · Compounds › Repair & healing peptides · 21 Nov 2024 · 29 likes Worth separating two things that post #2 runs together. BPC-157: the preclinical literature is extensive, mostly from a small number of research groups, and reports…
Hypertension improvement and when medication needs revisiting — a second dataset Replied, post #131 · Clinical › Comorbidities · 30 Oct 2024 · 5 likes Chronic kidney disease: compounds in this class have renal benefit in people with kidney disease. The benefit appears to be additive to other renal-protective agents,…
Requesting a page: what makes a good request — what changed since Replied, post #134 · Documentation › Wiki requests · 13 Oct 2024 · 29 likes Coming back to post #132, because the follow-up matters more than the original answer. Correction requests: if you spot an error in a maintained page, note it here with…
Follow-up: A site rotation scheme that is easy enough to actually follow Replied, post #39 · Practice › Administration · 19 Sep 2024 · 0 likes Leak-back after withdrawal: a small amount of liquid on the skin after withdrawal is ordinary. Whether you lost a "meaningful" dose depends on concentration and your…
Second pass at: Sodium, potassium and magnesium when intake drops Replied, post #89 · Nutrition & Training › Hydration & electrolytes · 12 Sep 2024 · 17 likes Constipation and hydration: dehydration makes constipation worse. Increasing fluid intake is the first intervention for constipation alongside other measures.
Correlation in a self-tracked dataset: what it can support Replied, post #31 · Research Methods › Statistics · 21 Aug 2024 · 6 likes post #30 answers the question as asked. The question underneath it is different. Multiplicity and multiple comparisons: if you test many hypotheses, the chance of…
The C-cell question: rodent findings and their human context — what changed since Replied, post #6 · Compounds › Semaglutide · 13 Aug 2024 · 5 likes This follows post #3 rather than contradicting it. The STEP programme populations were selected: enrollment criteria required baseline body mass index over 30, no…
Coming back to: Purity assay versus content assay: two different numbers Replied, post #47 · Analytics › COA interpretation · 11 Aug 2024 · 21 likes Reading old certificates: if a certificate is dated years ago, the lot it describes might be old. That is not automatically a problem but it is worth noting. Fresh…
Oral contraceptives and delayed emptying: what the data shows Replied, post #19 · Practice › Interactions · 9 Jul 2024 · 23 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…
Blind submission and why it changes minds Replied, post #8 · Sourcing › Independent verification · 2 Jul 2024 · 16 likes post #7 is right about the mechanism and I think understates the practical bit. Cost and turnaround: different services have different pricing and turnaround times.…
Follow-up: Where the four-week escalation interval comes from, and what it is not Replied, post #7 · Practice › Dosing & titration · 31 May 2024 · 2 likes Reaching a dose and staying there for a year: the question of whether a stable dose remains effective over years is mostly answered by the withdrawal trials and by…