e.mikkelsen

TL2 Member · Frankfurt, DE

Practical questions, practical answers. Not interested in speculation without a source.

Joined 13 June 2025 · last posted 3d

69 posts, newest first. Showing up to 150.

What I would want from a home test that does not exist yet — what changed since Replied, post #109 · Analytics › Home & field testing · 25 Jul 2026 · 0 likes False positives and false negatives: no test has 100% sensitivity and 100% specificity. A negative result does not guarantee absence; a positive result does not…
Reading order for a first week here, and what to skip until later — what changed since Replied, post #78 · Start Here › Welcome · 24 Jul 2026 · 4 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…
Risk-of-bias tools and the judgement they conceal — does this still hold? Replied, post #29 · Evidence › Meta-analyses · 22 Jul 2026 · 27 likes Publication bias: what did not get published? Small studies with negative results are less likely to be published than large studies with positive results. A forest…
Revisiting: Protein density versus volume when you cannot eat much Replied, post #84 · Nutrition & Training › Protein & intake · 20 Jul 2026 · 1 like Leucine and MPS: leucine stimulates muscle protein synthesis at a threshold of roughly 2 to 3 grams per meal. That influences how much protein per meal matters, but…
How shortages have affected compounding permissions Replied, post #46 · Access › Shortages · 17 Jul 2026 · 2 likes Picking up post #43: 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…
Why the timeline is on the right and not the left — what changed since Replied, post #66 · Meta › Site feedback · 2 Jul 2026 · 23 likes post #65 answers the question as asked. The question underneath it is different. Feature requests: if the site would work better with a feature it does not have (better…
Stepping down deliberately, and how to do it without losing progress — what changed since Replied, post #26 · Practice › Dosing & titration · 29 Jun 2026 · 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…
I have no scientific background — can I still follow the analytics categories? Replied, post #22 · Start Here › Welcome · 18 Jun 2026 · 0 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…
GLP-1 receptor distribution: central and peripheral Replied, post #72 · Pharmacology › Receptor biology · 18 Jun 2026 · 23 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…
Submitting a sample: the process end to end Replied, post #14 · Sourcing › Independent verification · 12 Jun 2026 · 0 likes This follows post #11 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…
Micronutrient adequacy at low total intake Replied, post #39 · Nutrition & Training › Protein & intake · 9 Jun 2026 · 1 like post #38 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…
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #40 · Analytics › Home & field testing · 6 Jun 2026 · 10 likes Enzyme assays: if you have an enzyme that reacts specifically with your compound, an enzyme-based assay can work. These are sometimes available commercially but are…
Packaging that arrived damaged: documenting it properly Replied, post #18 · Sourcing › Logistics · 1 Jun 2026 · 26 likes I read post #16 twice before replying, because I had assumed the opposite. Insurance and carrier liability: most parcel carriers limit liability. Understanding the…
Revisiting: Liver enzymes drifting down and what that usually means Replied, post #37 · Clinical › Bloodwork · 27 May 2026 · 5 likes On post #33 — agreed on the reasoning, with one qualification. Biological variation: the person-to-person variation in a biomarker for a healthy person is larger than…
Lean mass preservation: what the evidence supports — does this still hold? Replied, post #82 · Outcomes › Body composition · 24 May 2026 · 25 likes I read post #80 twice before replying, because I had assumed the opposite. Lean mass loss during rapid weight reduction: depends on protein intake, resistance training…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #27 · Analytics › HPLC & UHPLC · 15 May 2026 · 4 likes Worth separating two things that post #23 runs together. Before anything else: what was the gradient, and at what wavelength? Area percent at different wavelengths is…
EU-wide position versus national implementation — what changed since Replied, post #24 · Regional › European Union · 22 Apr 2026 · 23 likes Pharmacy practice: pharmacies in different EU countries differ in conservatism about irregular prescriptions. Some will decline a prescription they consider irregular;…
Five questions in one post gets you one answer — how to split them Replied, post #50 · Start Here › How to Ask · 8 Apr 2026 · 0 likes Avoid "any advice?" at the end. It is so generic that people do not know which part of the post it refers to. Pick the specific part and ask that specific question…
The most useful thing you learned here that was not the answer you came for Replied, post #29 · Lounge › Off topic · 23 Mar 2026 · 30 likes Personal stories: if you want to talk about what led you to this compound, your journey, or how the change has affected your life, the Lounge is the place for that.
Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #121 · Practice › Dosing & titration · 21 Feb 2026 · 0 likes Micro-titration: the concept of increments smaller than the labelled steps. It has no evidence base from trials but is described by some people. The downside is that…
Trifluoroacetate content and its consequences Replied, post #93 · Analytics › Impurities & related substances · 6 Feb 2026 · 0 likes Related substances: compounds chemically related to the target peptide but not the target peptide itself. The standard method separates them and reports them as area…
Which panel is worth repeating and which is worth ignoring — a second dataset Replied, post #52 · Clinical › Bloodwork · 15 Jan 2026 · 31 likes Analytical imprecision: any measurement has an error margin. A small difference in consecutive tests is usually measurement noise, not a real change. Knowing the…
Revisiting: Journal club: SURMOUNT-1, read without the press release Replied, post #6 · Evidence › Journal club · 31 Dec 2025 · 25 likes SELECT (N Engl J Med 2023): Semaglutide cardiovascular outcomes without diabetes. The first outcome trial in people without diabetes, which decoupled the cardiovascular…
Distinguishing expected GI effects from something that needs urgent attention Replied, post #5 · Practice › Side effects · 31 Dec 2025 · 26 likes On the opening post — 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…
Reading an interaction checker output critically Replied, post #65 · Practice › Interactions · 13 Dec 2025 · 18 likes Thyroid medications: semaglutide is associated with a slowing of gastric emptying, which might affect thyroid medication absorption if they are taken very close…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly — the long… Replied, post #63 · Compounds › Tirzepatide · 9 Dec 2025 · 0 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…
Early satiety becoming a problem rather than a benefit Replied, post #9 · Practice › Side effects · 19 Nov 2025 · 0 likes Lean mass loss: the rate of lean tissue loss depends on protein intake, resistance training volume, and total energy deficit. Adequate protein and maintaining training…
Titles that describe the question, not the situation Replied, post #151 · Start Here › How to Ask · 16 Nov 2025 · 4 likes On post #147 — agreed on the reasoning, with one qualification. Five questions in one post gets you one answer: the easiest one, usually not the one you needed most.…
Second pass at: How to ask a question when you cannot say why you are asking it Replied, post #32 · Start Here › How to Ask · 14 Nov 2025 · 2 likes Five questions in one post gets you one answer: the easiest one, usually not the one you needed most. Post them separately or pick the one that depends on the others…
New subcategory: rationale and scope Replied, post #34 · Meta › Announcements · 16 Oct 2025 · 0 likes post #33 answers the question as asked. The question underneath it is different. Scheduled maintenance: if the site is going offline for maintenance, advance notice…
A comparison of home results against a laboratory result on the same vial Replied, post #49 · Analytics › Home & field testing · 14 Oct 2025 · 0 likes Precision of home tests: most consumer-accessible devices are not precise to the level people want ("is this 99% pure or 97% pure"). They give a yes/no or a rough…
What happens after your first post: likes, trust levels, and why none of it matters much… Replied, post #11 · Start Here › Welcome · 12 Oct 2025 · 0 likes This follows post #8 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…
Cross-border purchase rules within the EU Replied, post #19 · Regional › European Union · 3 Oct 2025 · 6 likes Worth separating two things that post #15 runs together. France: ANSM implements EU framework. Reimbursement has been narrower for weight management. Prescribing…
Which panel is worth repeating and which is worth ignoring Replied, post #127 · Clinical › Bloodwork · 3 Oct 2025 · 0 likes This follows post #124 rather than contradicting it. I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The…
Second pass at: What "verified" means on our vendor pages, stated narrowly Replied, post #19 · Sourcing › Vendor reports · 27 Sep 2025 · 24 likes Picking up post #16: that is the part I would want checked first. Structured report format: compound, lot, independent testing service, method as reported, result, and…
Discussing something you have already been doing Replied, post #9 · Clinical › Prescriber conversations · 26 Sep 2025 · 3 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.
Payment method and the leverage it gives you, ranked Replied, post #54 · Sourcing › Payments · 22 Sep 2025 · 1 like Recurring billing: if a supplier sets up recurring billing by default, understanding the terms for cancellation is important before the first charge.
Pages past their review date, listed Replied, post #26 · Meta › Wiki maintenance · 3 Sep 2025 · 0 likes Revision disputes: if you disagree with an edit a maintainer made, discussing it here invites resolution rather than conflict.
Confounding by indication, explained with a concrete example Replied, post #16 · Evidence › Study critique · 2 Sep 2025 · 1 like post #15 is right about the mechanism and I think understates the practical bit. Confounding: in observational data, is there a third variable that explains the…
[2026 update] What we do not know about retatrutide, listed explicitly Replied, post #67 · Compounds › Retatrutide · 28 Aug 2025 · 0 likes post #66 is right about the mechanism and I think understates the practical bit. Hepatic effects: glucagon receptor agonism promotes hepatic fat oxidation, which is…
[2026 update] Journal club: is percentage weight change the right endpoint? Replied, post #76 · Evidence › Journal club · 20 Aug 2025 · 0 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…
Gauge and length selection for subcutaneous injection Replied, post #18 · Devices › Syringes & needles · 6 Aug 2025 · 31 likes Syringe barrel size: common sizes are 0.3 mL, 0.5 mL, and 1.0 mL. Smaller barrels are more legible for small doses. Larger barrels hold larger volumes. Choose based on…
"Greater than or equal to 99%" as a specification rather than a result Replied, post #16 · Analytics › COA interpretation · 6 Aug 2025 · 4 likes Worth separating two things that post #12 runs together. What fields matter on a certificate: lot number matching the vial, test date, the analytical method stated…
Cross-border purchase within the EU: the actual rules Replied, post #6 · Access › International · 22 Jul 2025 · 16 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.
Follow-up: Why we hide unevidenced fraud accusations and log the hiding Started this topic · Sourcing › Red flags · 14 Jul 2025 · 54 likes The question in the title: Why we hide unevidenced fraud accusations and log the hiding I will give what I have already checked below so nobody repeats it. Structured…
Revisiting: Why a compound being unapproved is not the same as being illegal to possess Replied, post #35 · Sourcing › Regulatory · 27 Jun 2025 · 31 likes Off-label use and medical practice: clinicians can prescribe approved medications off-label under some circumstances. That is different from research-use-only…
Second pass at: Pen dose counters: what a click does and does not guarantee Replied, post #54 · Devices › Pens & autoinjectors · 31 May 2025 · 7 likes Storage after first use: most pens can be stored at room temperature after first use, even if unrefrigerated, for a limited time (often 28 days). Check your specific…
Why "any advice?" is the least effective ending for a post — the long version Replied, post #2 · marked as the solution · Start Here › How to Ask · 10 May 2025 · 7 likes Avoid "any advice?" at the end. It is so generic that people do not know which part of the post it refers to. Pick the specific part and ask that specific question…
Journal club: indirect comparison between two programmes, defended and attacked — one… Replied, post #3 · Evidence › Journal club · 16 Apr 2025 · 26 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.
A well-designed study with a badly written abstract Replied, post #26 · Evidence › Study critique · 15 Apr 2025 · 0 likes When you change your mind: if a reply convinces you that your criticism was not well-founded, say so plainly. The critique might still be real but smaller than you…
Reading a trial's population section before its results — does this still hold? Replied, post #5 · Evidence › Trials · 12 Apr 2025 · 0 likes Population narrowness: most trials in this class enrolled fairly specific groups. Baseline body mass index ranges, exclusion of renal disease, exclusion of certain…
UK access routes, dated and sourced — a second dataset Replied, post #62 · Regional › UK & Ireland · 10 Apr 2025 · 21 likes MHRA is the regulator. Licensed incretin analogues are prescription-only medicines. NHS and private prescribing routes exist with materially different access criteria…
What SELECT changed about how semaglutide is discussed, and what it did not Replied, post #71 · Compounds › Semaglutide · 10 Apr 2025 · 3 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…
Excipient function in a licensed injectable Replied, post #2 · Pharmacology › Formulation chemistry · 8 Apr 2025 · 5 likes Emulsification and suspensions: some formulations are emulsions or suspensions rather than solutions. Semaglutide formulations are solutions; some other compounds are…
Checking someone else's arithmetic: a worked example thread Replied, post #31 · Practice › Reconstitution · 20 Mar 2025 · 6 likes Picking up post #28: that is the part I would want checked first. Choosing a concentration on purpose rather than by accident: starting with "I want to draw 0.5 mL per…
A supplier that answers analytical questions with restated claims Replied, post #37 · Sourcing › Red flags · 10 Mar 2025 · 9 likes Pricing patterns: unusually low prices for what are otherwise consistent with market rates might indicate lower quality, stolen goods, or a scam. Unusually high prices…
Reading an MS report that only gives you a single number Replied, post #24 · Analytics › Mass spectrometry · 7 Mar 2025 · 1 like Electrospray ionisation produces multiply charged ions. For a 4 kDa peptide you expect mostly 2+, 3+, and 4+ charge states. Reading an electrospray spectrum means…
Second pass at: Regression to the mean in progress reports Replied, post #73 · Research Methods › Statistics · 2 Mar 2025 · 0 likes Confidence intervals: rather than a single point estimate, a range of plausible values. A narrow interval means precise measurement; a wide interval means measurement…
Pharmaceutical compounding rules, summarised from primary sources Replied, post #19 · Sourcing › Regulatory · 28 Feb 2025 · 0 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.
Second pass at: Domestic fridge temperature mapping: a cheap experiment Replied, post #2 · Devices › Cold chain · 7 Feb 2025 · 3 likes Shipment during summer or to hot climates: consider shipping to a cold-storage facility rather than to home if temperatures will be high. Alternatively, time shipment…
Protein density versus volume when you cannot eat much Replied, post #52 · Nutrition & Training › Protein & intake · 1 Feb 2025 · 10 likes Eating anything at all: on substantial appetite suppression, eating enough total calories to maintain lean mass is the priority. Protein comes second to total intake.
SNAC and the mechanism of oral peptide absorption — the long version Replied, post #19 · Compounds › Oral incretins · 28 Dec 2024 · 18 likes Oral bioavailability is variable between people. Some people absorb well; others absorb poorly. That inter-individual variation is larger than with injectables and is…
Biased agonism: a real phenomenon, an over-used explanation — what changed since Replied, post #8 · Pharmacology › Receptor biology · 20 Dec 2024 · 12 likes Central versus peripheral action: GLP-1 agonism works through both central nervous system effects (appetite) and peripheral effects (gastric motility, insulin). The…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #9 · Data & Tools › Calculators · 3 Dec 2024 · 1 like 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…
Injection-site reactions: describing them precisely enough to be useful Replied, post #28 · Practice › Side effects · 27 Nov 2024 · 33 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…
Promotion criteria, and the one that stops most nominations Replied, post #99 · Documentation › Doc review · 30 Oct 2024 · 6 likes Fact-checking: if you see a factual claim in a maintained page that you have evidence contradicts, post the evidence here. The maintainer will review and correct if you…
Food noise reducing and the disorientation that can follow Replied, post #25 · Wellbeing › Mental health · 20 Oct 2024 · 1 like This follows post #22 rather than contradicting it. Support and community: some people process weight change through community (online or in-person). Others prefer…
A page that has drifted out of date and needs a maintainer Replied, post #11 · Documentation › Wiki requests · 20 Sep 2024 · 14 likes Format suggestions: if you think a maintained page could be clearer in its presentation (different section structure, different examples, added graphics) suggest the…
Blind submission and why it changes minds Replied, post #37 · Sourcing › Independent verification · 15 Aug 2024 · 1 like Repeat testing: if you want to verify the same lot a second time, testing with a different service strengthens the conclusion. Testing with the same service verifies…