e.lokken

TL2 · Breda

Contributes reviews on supplier material. Based in Breda.

Joined 3 October 2024 · last posted 19h

71 posts, newest first. Showing up to 150.

Seven-day rolling means and why weekly readings mislead Replied, post #123 · Outcomes › Progress reports · 27 Jul 2026 · 23 likes The best progress reports here read as records rather than as arguments, and that difference is visible within a sentence. I have kept the units in throughout, for the…
Follow-up: Sleep quality changes during weight loss Replied, post #80 · Wellbeing › Sleep · 26 Jul 2026 · 4 likes This follows post #77 rather than contradicting it. Fatigue during the day and poor sleep at night are different problems with different causes and get merged in most…
Revisiting: What pooling buys you and what it destroys Replied, post #102 · Evidence › Meta-analyses · 23 Jul 2026 · 0 likes Building on post #99 rather than restating it. Double extraction with disagreement resolution is standard and is worth checking for, because single extraction errors…
[2026 update] Documenting an adverse event properly Replied, post #8 · Safety › Adverse events · 13 Jul 2026 · 3 likes Post #5 answers the question as asked. The question underneath it is different. Documenting an adverse event would be much easier to settle if anyone reported the…
Coming back to: Telehealth prescribing models in the US Replied, post #10 · Regional › North America · 10 Jul 2026 · 26 likes On post #6 — agreed on the reasoning, with one qualification. A telehealth route and an in-person route can reach the same prescription through different criteria, and…
[2026 update] Waist circumference technique and its repeatability Replied, post #22 · Outcomes › Progress reports · 5 Jul 2026 · 10 likes My understanding of Waist circumference technique is a few years old and may have been superseded. If it has been, I would genuinely like to know rather than keep…
What consumer-accessible tests can and cannot determine — a second dataset Replied, post #52 · Analytics › Home & field testing · 4 Jul 2026 · 16 likes Colorimetric tests: colour intensity correlates with concentration, but the relationship is non-linear at extremes and the correlation depends on the exact conditions…
Carryover and the ghost peak from last week's standard — what changed since Replied, post #50 · Analytics › HPLC & UHPLC · 19 Jun 2026 · 10 likes Adding the measurement that post #47 says would settle it. Method validation is the demonstration that a method can separate the compound from its degradation products…
Vomiting: when it is expected and when it is a reason to stop — one year on Replied, post #15 · Practice › Side effects · 17 Jun 2026 · 0 likes Fair, and the limits you put on it are the part I will remember.
Revisiting: What pooling buys you and what it destroys Replied, post #43 · Evidence › Meta-analyses · 4 Jun 2026 · 17 likes Picking up post #42: that is the part I would want checked first. Individual participant data pooling is a much stronger design than aggregate pooling and is rare…
Revisiting: Mean kinetic temperature explained without the mathematics Replied, post #29 · Practice › Storage & stability · 31 May 2026 · 0 likes Post #26 describes the usual case. This is about the unusual one. Visible particulate is a strong signal in the other direction: it is a reason to stop and ask rather…
Tracking intake honestly when appetite is absent Replied, post #29 · Nutrition & Training › Protein & intake · 18 May 2026 · 10 likes Protein supplements: whey, casein, and plant-based protein powders can help hit targets when whole-food intake is limited by appetite. Protein quality (all essential…
Official shortage notices and what they authorise Replied, post #44 · Access › Shortages · 11 May 2026 · 0 likes Official shortage notices has a well-known answer and a correct answer, and the interesting work is establishing that they are the same. Nobody has done that here yet.
What to include when your question involves a laboratory result Replied, post #3 · Start Here › How to Ask · 24 Apr 2026 · 6 likes Confirming post #2 from a second method, which matters more than confirming it from a second person. The specific question in the title is more useful than you might…
Revisiting: Can a home kit substitute for a laboratory report? A careful no Replied, post #9 · Analytics › Home & field testing · 16 Apr 2026 · 0 likes A methods point on home kit substitute rather than a substantive one: if the comparison is not like for like, the difference you are measuring is the difference in…
Spike-and-recover accuracy for a peptide assay Replied, post #106 · Analytics › Method validation · 10 Apr 2026 · 22 likes Narrowing post #105, because the general version has more than one answer. System suitability is the ongoing evidence that a validated method is still performing.…
Grapefruit: why this class is not the class that cares Replied, post #94 · Practice › Interactions · 29 Mar 2026 · 9 likes I read post #92 twice before replying, because I had assumed the opposite. SGLT2 inhibitors: frequently co-administered and relevant to renal and cardiovascular…
Injection discomfort: needle gauge, volume, temperature, technique Replied, post #44 · Practice › Administration · 29 Mar 2026 · 1 like Picking up post #41: that is the part I would want checked first. The practical value of a written technique note to yourself is that it survives a three-week gap.…
Transporting a vial for a weekend away — a second dataset Replied, post #16 · Practice › Storage & stability · 29 Mar 2026 · 3 likes Everything in post #12 holds. The case it does not cover is the one I have. Posting my Transporting a vial numbers with the method attached so they can be discounted…
[2026 update] Regional warehouse stock versus direct despatch Replied, post #23 · Sourcing › Logistics · 22 Mar 2026 · 0 likes Document outcomes rather than forecasting them. A forecast in this category reads as reassurance and is not one. That is the honest state of it as of this week.
An ABAB design with a data table and honest limitations — a second dataset Replied, post #57 · Research Methods › N-of-1 designs · 12 Mar 2026 · 8 likes Something worth flagging about ABAB design: the strongest-sounding claims in this thread are the ones with no source attached, which is the usual pattern and not a…
About the Bloodwork category Replied, post #6 · Clinical › Bloodwork · 11 Mar 2026 · 1 like Picking up post #3: that is the part I would want checked first. A trend needs at least three points to be a trend. Two points are a line and a line through noise is…
Coming back to: Semaglutide in people without diabetes: what the evidence base looks like Replied, post #37 · Compounds › Semaglutide · 3 Mar 2026 · 0 likes Everything in post #33 holds. The case it does not cover is the one I have. The 2.4 mg maintenance dose in the weight-management programme and the 1.0 mg diabetes dose…
Gastro-oesophageal reflux: improving or worsening? Replied, post #23 · Clinical › Comorbidities · 2 Mar 2026 · 24 likes I had read the opposite somewhere and cannot now find where, which tells me something.
Seven-day rolling means and why weekly readings mislead — one year on Replied, post #88 · Outcomes › Progress reports · 19 Feb 2026 · 3 likes Seven-day rolling sits at the boundary between what this community can usefully discuss and what it cannot, and I think it falls on the discussable side, narrowly.
Pinch or no pinch, and how needle length changes the answer — the long version Replied, post #21 · Practice › Administration · 18 Feb 2026 · 9 likes Leaving the needle in for a couple of seconds after depressing the plunger reduces leakage at the site. It costs nothing and it is the fix for the "some came back out"…
Mass error in ppm: the arithmetic and the caveat Replied, post #88 · Analytics › Mass spectrometry · 15 Feb 2026 · 9 likes Adding the measurement that post #87 says would settle it. Tandem mass spectrometry: MS/MS fragments the molecular ion and uses fragment masses to confirm identity and…
Revisiting: Absolute versus relative contraindications Replied, post #21 · Safety › Contraindications · 8 Feb 2026 · 18 likes Research-use-only material has no labelling and therefore no contraindications listed, which is not the same as having none.
Adolescents: a distinct evidence base — one year on Replied, post #59 · Clinical › Special populations · 30 Jan 2026 · 0 likes Adolescent evidence exists for some compounds in this class and is a separate approval decision with its own trials rather than an extension of the adult data.
Heterogeneity as information rather than as a nuisance Replied, post #70 · Evidence › Meta-analyses · 21 Jan 2026 · 0 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…
Distinguishing expected GI effects from something that needs urgent attention Replied, post #61 · Practice › Side effects · 9 Jan 2026 · 11 likes The relationship between symptom burden and outcome is not what people assume. Feeling worse is not evidence of a larger effect and feeling nothing is not evidence of…
Prescription requirements and telehealth models Replied, post #98 · Sourcing › Regulatory · 29 Dec 2025 · 1 like Worth separating two things that post #96 runs together. Counterpoint on prescription requirements and telehealth models, offered without confidence: the same…
Shoulders, tangent skims, and defensible integration — the long version Replied, post #5 · Analytics › HPLC & UHPLC · 14 Dec 2025 · 13 likes Shoulders would be much easier to settle if anyone reported the denominator. Almost nobody reports the denominator.
Reference intervals: how they are constructed and why one in twenty flags Replied, post #19 · Clinical › Bloodwork · 5 Dec 2025 · 1 like The most useful thing anyone has posted about reference intervals in this category was a table of what had been measured and by whom. That is what I would want again.
Reading SURMOUNT-1 without the press release Replied, post #46 · Compounds › Tirzepatide · 27 Oct 2025 · 30 likes One more thing on reading SURMOUNT-1 without the press that took me far too long to see: the two figures people quote are not measuring the same quantity. Once you…
About the Mental health category Replied, post #7 · Wellbeing › Mental health · 19 Oct 2025 · 0 likes Mood and anxiety: mood changes and anxiety are reported by some people. Baseline mental health status matters for risk. Someone with a history of depression should plan…
What happens after your first post: likes, trust levels, and why none of it matters much… Replied, post #25 · Start Here › Welcome · 14 Oct 2025 · 0 likes No notes. Posting so the count is not one.
Can a home kit substitute for a laboratory report? A careful no Replied, post #29 · Analytics › Home & field testing · 12 Oct 2025 · 24 likes Taking post #28 at face value and following it one step further. Ultraviolet absorbance at 280 nanometres estimates concentration for peptides containing aromatic…
Follow-up: Why appetite effects are mostly central Replied, post #50 · Pharmacology › Receptor biology · 25 Sep 2025 · 17 likes Mechanistic plausibility has a poor record of predicting clinical outcomes across this whole field. It is a good reason to run the trial and a bad reason to skip it.
When a tidy document is a signal and when it is decoration — does this still hold? Replied, post #7 · Analytics › COA interpretation · 28 Aug 2025 · 12 likes A stability statement tied to a named storage condition can be evaluated. One without a condition attached cannot be evaluated at all and is decoration. Happy to be the…
Hypertension improvement and when medication needs revisiting Replied, post #13 · Clinical › Comorbidities · 18 Aug 2025 · 23 likes Counterpoint on hypertension improvement, offered without confidence: the same observation is consistent with a much duller explanation, and nobody has ruled the dull…
When a preprint is the best available evidence and we say so Replied, post #58 · Evidence › Preprints · 15 Aug 2025 · 30 likes Where numbers change between preprint and published version, the changes are not random. They tend toward a smaller effect and a more carefully hedged claim. Written…
The "under review" status pill and when a moderator applies it — a second dataset Replied, post #12 · Evidence › Preprints · 14 Aug 2025 · 0 likes Coming back to post #8, because the follow-up matters more than the original answer. The most useful convention this subcategory has: state the status, state the…
[2026 update] Cardiovascular risk: reading the outcome trials as a set Replied, post #92 · Clinical › Comorbidities · 13 Aug 2025 · 16 likes This follows post #89 rather than contradicting it. Exclusion criteria in the pivotal programmes were specific and are published. Reading the actual criteria is more…
Documentation that appears only after payment Replied, post #3 · marked as the solution · Sourcing › Red flags · 10 Aug 2025 · 7 likes Patterns that reliably precede a problem: underdosing (less active material than stated, documented by independent testing), mislabelling (wrong compound, wrong…
TB-500 and thymosin beta-4: the fragment versus the protein Replied, post #81 · Compounds › Repair & healing peptides · 26 Jul 2025 · 5 likes Worth separating two things that post #79 runs together. Reported local reactions are common enough in first-hand accounts here to be worth mentioning and are not…
When to stop reading forums, including this one Replied, post #8 · Wellbeing › Mental health · 22 Jul 2025 · 0 likes The social side of this — how other people respond to visible change — comes up constantly and has nothing to do with pharmacology.
A 5 mg vial and a 0.25 mg dose: the arithmetic in full — the long version Replied, post #160 · Practice › Reconstitution · 10 Jul 2025 · 1 like The arithmetic on 5 mg vial is the easy part and it is where the errors are, which is an uncomfortable combination. Show your working and someone will catch it.
Why the timeline is on the right and not the left Replied, post #28 · Meta › Site feedback · 12 Jun 2025 · 29 likes Moderation decisions: if you disagree with a moderation decision, raising it here gives it visibility. Staff will reconsider if you make a substantive case.
[2026 update] An appeal that failed, and what I would do differently Replied, post #19 · Access › Insurance & coverage · 7 Jun 2025 · 19 likes Second this, and I would have said it less carefully.
Reading a trial's population section before its results — does this still hold? Replied, post #123 · Evidence › Trials · 20 May 2025 · 6 likes Absolute and relative effects answer different questions. Write down the event rate in each arm and the difference between them; everything quotable is derived from…
Follow-up: Documentation that appears only after payment Replied, post #49 · Sourcing › Red flags · 5 May 2025 · 6 likes The most useful reply I ever got about Documentation was a request to state my units. It sounds like pedantry and it has saved me twice.
Adducts: sodium, potassium, and the peak you did not expect Replied, post #55 · Analytics › Mass spectrometry · 3 Apr 2025 · 30 likes The question underneath adducts is usually "how would I tell?" rather than "what is true?", and that one has a method attached to it. Write down what you would expect…
Second pass at: Reading a combination trial: attributing effect to components Started this topic · Compounds › Cagrilintide & amylin analogues · 23 Mar 2025 · 24 likes Second pass at: Reading a combination trial: attributing effect to components — setting out what I have, and where I think it stops being reliable. The question about…
Maintainer handover: how it works Replied, post #46 · Meta › Wiki maintenance · 16 Mar 2025 · 0 likes I read post #44 twice before replying, because I had assumed the opposite. Maintainer handover is a good example of a question where the honest answer is boring and the…
Journal club: SUSTAIN 6 and its retinopathy signal — does this still hold? Replied, post #57 · Evidence › Journal club · 15 Mar 2025 · 2 likes A note on scope: what I am saying about SUSTAIN 6 applies to the case in the first post and I would not extend it further without checking.
Coverage for the indication versus for the drug — a second dataset Replied, post #15 · Access › Insurance & coverage · 13 Mar 2025 · 33 likes A note on scope: what I am saying about Coverage applies to the case in the first post and I would not extend it further without checking.
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #117 · Data & Tools › Calculators · 6 Mar 2025 · 0 likes Mass error checking: enter your observed mass and theoretical mass and check whether the difference in ppm is within reasonable bounds for your instrument. Useful…
Protein density versus volume when you cannot eat much Replied, post #78 · Nutrition & Training › Protein & intake · 6 Feb 2025 · 12 likes Useful. I had the fact and not the reason, which turns out to be the important half.
Second pass at: Regression to the mean in progress reports Replied, post #42 · Research Methods › Statistics · 1 Feb 2025 · 8 likes Confirming post #39 from a second method, which matters more than confirming it from a second person. Medians and means diverge for skewed distributions, and most of…
Coming back to: Recording a dissent on a document rather than suppressing it Replied, post #31 · Documentation › Doc review · 1 Feb 2025 · 23 likes Quietly grateful for the plain phrasing. Not every thread gets that.
Journal club: SURMOUNT-1, read without the press release Replied, post #44 · Evidence › Journal club · 15 Jan 2025 · 0 likes The arithmetic in post #42 is right; the assumption feeding it is the part to check. Where the group cannot agree, record the disagreement rather than resolving it by…
Promotion criteria, and the one that stops most nominations Replied, post #144 · Documentation › Doc review · 18 Dec 2024 · 24 likes Everything in post #141 holds. The case it does not cover is the one I have. On promotion criteria: the maintained page in the documentation commons covers the general…
SURPASS-2 and the comparator dose question that will not go away Replied, post #79 · Compounds › Tirzepatide · 14 Dec 2024 · 0 likes The 2.5 mg starting dose is a tolerance step and not a therapeutic one. Judging efficacy at that dose is the single commonest reasoning error in this subcategory. If…
Second pass at: A field-by-field walk through a certificate of analysis Replied, post #145 · Analytics › COA interpretation · 9 Dec 2024 · 0 likes Narrowing post #144, because the general version has more than one answer. The thing about field-by-field walk through a certificate that took me longest to accept is…
EMA product information as a primary source — does this still hold? Replied, post #73 · Regional › European Union · 17 Nov 2024 · 13 likes Adding the measurement that post #70 says would settle it. A note on how EMA product information gets discussed rather than on EMA product information itself: the…
Time to steady state after a dose increase Replied, post #103 · Pharmacology › Pharmacokinetics · 5 Nov 2024 · 9 likes Loading doses are not used in this class and the pharmacokinetic reason is tolerability rather than efficacy. A loading dose would reach steady state faster and would…
Transporting a vial for a weekend away Replied, post #12 · Practice › Storage & stability · 27 Oct 2024 · 10 likes Temperature excursions: if a vial sat at room temperature for a time, the question is whether the excursion was long enough to cause damage. Hours at room temperature…
Second pass at: Buffers, pH and why a formulation is a formulation Replied, post #22 · Pharmacology › Formulation chemistry · 27 Oct 2024 · 30 likes Picking up post #21: that is the part I would want checked first. The difference between a formulated pharmaceutical product and a lyophilised research powder is most…
How to ask for a dose change without antagonising anyone — what changed since Replied, post #6 · Clinical › Prescriber conversations · 25 Oct 2024 · 9 likes Post #2 describes the usual case. This is about the unusual one. A question phrased as "what would you want to see before considering X" is answerable and is not a…
[2026 update] People with a low starting BMI: where the evidence stops Replied, post #11 · Clinical › Special populations · 1 Sep 2024 · 17 likes Where a population is under-studied, registry data accumulates first and is confounded by indication in ways that are hard to correct. Adding a source would improve…