e.lokken

TL2 Moderator · Breda

Contributes reviews on supplier material. Based in Breda.

Joined 3 October 2024 · last posted 19h

72 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 Rate of change: reporting progress as "lost 5 kg in 12 weeks" is more useful than "currently at 82 kg" because the rate tells you whether the change is steady,…
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. Apnoea monitoring: if you have diagnosed or suspected sleep apnoea, periodic monitoring (annually) during weight…
Revisiting: What pooling buys you and what it destroys Replied, post #102 · Evidence › Meta-analyses · 23 Jul 2026 · 0 likes This follows post #99 rather than contradicting it. Why forest plots are more informative than pooled numbers: they show the variation across studies, which tells you…
[2026 update] Documenting an adverse event properly Replied, post #8 · Safety › Adverse events · 13 Jul 2026 · 3 likes Picking up post #5: that is the part I would want checked first. Allergic reactions: true allergy (anaphylaxis, severe rash) is rare with these peptide compounds but…
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. Private insurance gaps: some people have private insurance but medication is not covered. Manufacturer…
[2026 update] Waist circumference technique and its repeatability Replied, post #22 · Outcomes › Progress reports · 5 Jul 2026 · 10 likes Medication changes: escalating dose, or adding or removing other medications, can affect the rate of weight loss. Documenting medication changes alongside weight makes…
What consumer-accessible tests can and cannot determine — a second dataset Replied, post #52 · Analytics › Home & field testing · 4 Jul 2026 · 16 likes Sample handling matters: if a sample is contaminated or degraded before testing, the test gives you the result for the degraded sample, not for fresh material. That is…
Carryover and the ghost peak from last week's standard — what changed since Replied, post #50 · Analytics › HPLC & UHPLC · 19 Jun 2026 · 10 likes Picking up post #47: that is the part I would want checked first. Area percent is not mass percent. It is a proportion of absorbance, weighted by each species'…
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 Fatigue: commonly reported, frequently multifactorial. It is worth asking whether other factors have changed (sleep, training volume, diet adequacy, hydration) before…
Revisiting: What pooling buys you and what it destroys Replied, post #43 · Evidence › Meta-analyses · 4 Jun 2026 · 17 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: Mean kinetic temperature explained without the mathematics Replied, post #29 · Practice › Storage & stability · 31 May 2026 · 0 likes On post #25 — agreed on the reasoning, with one qualification. Freeze-thaw: some peptide solutions tolerate freezing poorly because ice crystals damage protein…
Tracking intake honestly when appetite is absent Replied, post #29 · Nutrition & Training › Protein & intake · 18 May 2026 · 10 likes Liquid versus solid: protein in liquid form (shakes) is easier to consume in volume but might not be as satiating as solid food. Using both together can help.
Official shortage notices and what they authorise Replied, post #44 · Access › Shortages · 11 May 2026 · 0 likes Managing an unplanned gap: if a shortage causes a gap in treatment, the questions are how long the gap will be and how that affects your condition. Discussing with your…
What to include when your question involves a laboratory result Replied, post #3 · Start Here › How to Ask · 24 Apr 2026 · 6 likes post #2 answers the question as asked. The question underneath it is different. Disagreeing with an answer you got: cite what you disagree with, say what contradicts…
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 Sample handling matters: if a sample is contaminated or degraded before testing, the test gives you the result for the degraded sample, not for fresh material. That is…
Spike-and-recover accuracy for a peptide assay Replied, post #106 · Analytics › Method validation · 10 Apr 2026 · 22 likes post #105 is right about the mechanism and I think understates the practical bit. Accuracy: the method measures what you intend to measure. For purity methods, this is…
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. Injection discomfort: comes from needle gauge (finer = less discomfort), volume (smaller = less…
Transporting a vial for a weekend away — a second dataset Replied, post #16 · Practice › Storage & stability · 29 Mar 2026 · 3 likes Worth separating two things that post #12 runs together. Vial integrity: once a vial is entered with a needle repeatedly, the rubber closure degrades and the integrity…
[2026 update] Regional warehouse stock versus direct despatch Replied, post #23 · Sourcing › Logistics · 22 Mar 2026 · 0 likes Insurance and carrier liability: most parcel carriers limit liability. Understanding the limits before choosing a carrier matters if you are shipping expensive material.
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 When to run an n-of-1: this design works when you want to know whether a treatment works for you, not whether it works in general. For that purpose, it is efficient.
About the Bloodwork category Replied, post #6 · Clinical › Bloodwork · 11 Mar 2026 · 1 like This follows post #3 rather than contradicting it. Renal function markers: eGFR is estimated, not measured. It depends on creatinine, age, and weight. A small change in…
Coming back to: Semaglutide in people without diabetes: what the evidence base looks like Replied, post #37 · Compounds › Semaglutide · 3 Mar 2026 · 0 likes Worth separating two things that post #33 runs together. The mass figure differs between sources because of how the different entities report it. The monoisotopic mass…
Gastro-oesophageal reflux: improving or worsening? Replied, post #23 · Clinical › Comorbidities · 2 Mar 2026 · 24 likes Comorbidity control: if a comorbidity (high blood pressure, high lipids) is not adequately controlled, the decision about adding compounds in this class depends on the…
Seven-day rolling means and why weekly readings mislead — one year on Replied, post #88 · Outcomes › Progress reports · 19 Feb 2026 · 3 likes Non-scale victories: muscle gain or maintenance, clothing fit, energy level, and capability (like climbing stairs without breathlessness) are measurements that…
Pinch or no pinch, and how needle length changes the answer — the long version Replied, post #21 · Practice › Administration · 18 Feb 2026 · 9 likes A site rotation scheme that actually works: abdomen, outer thigh, back of arm, outer hip. Rotate through them in order, move a minimum 2 cm between consecutive sites,…
Mass error in ppm: the arithmetic and the caveat Replied, post #88 · Analytics › Mass spectrometry · 15 Feb 2026 · 9 likes post #87 answers the question as asked. The question underneath it is different. Tandem mass spectrometry: MS/MS fragments the molecular ion and uses fragment masses to…
Revisiting: Absolute versus relative contraindications Replied, post #21 · Safety › Contraindications · 8 Feb 2026 · 18 likes Diabetic retinopathy complications: a signal for this was noted in SUSTAIN 6. Current evidence is mixed. The risk is not zero and some caution is appropriate in people…
Adolescents: a distinct evidence base — one year on Replied, post #59 · Clinical › Special populations · 30 Jan 2026 · 0 likes Pregnancy and planning: these compounds are not approved for use in pregnancy. Planning windows (how long to wait before attempting pregnancy) are not formally…
Heterogeneity as information rather than as a nuisance Replied, post #70 · Evidence › Meta-analyses · 21 Jan 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…
Distinguishing expected GI effects from something that needs urgent attention Replied, post #61 · Practice › Side effects · 9 Jan 2026 · 11 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…
Prescription requirements and telehealth models Replied, post #98 · Sourcing › Regulatory · 29 Dec 2025 · 1 like Coming back to post #96, because the follow-up matters more than the original answer. Labelling and intended use: a compound sold as "research-use-only" does not change…
Shoulders, tangent skims, and defensible integration — the long version Replied, post #5 · Analytics › HPLC & UHPLC · 14 Dec 2025 · 13 likes This is why a purity figure without the underlying chromatogram is weaker evidence than it appears. It is also why two competent laboratories can report different…
Reference intervals: how they are constructed and why one in twenty flags Replied, post #19 · Clinical › Bloodwork · 5 Dec 2025 · 1 like A single value outside interval: usually uninformative on a single draw. What makes a result interesting: a trend across multiple draws, a magnitude well beyond the…
Reading SURMOUNT-1 without the press release Replied, post #46 · Compounds › Tirzepatide · 27 Oct 2025 · 30 likes SURMOUNT-4 used a randomised withdrawal design: everyone titrated, then those on maintenance were randomised to continue or placebo. Continuation maintained effect;…
About the Mental health category Replied, post #7 · Wellbeing › Mental health · 19 Oct 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…
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 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…
Can a home kit substitute for a laboratory report? A careful no Replied, post #29 · Analytics › Home & field testing · 12 Oct 2025 · 24 likes post #28 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…
Follow-up: Why appetite effects are mostly central Replied, post #50 · Pharmacology › Receptor biology · 25 Sep 2025 · 17 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…
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 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…
Hypertension improvement and when medication needs revisiting Replied, post #13 · Clinical › Comorbidities · 18 Aug 2025 · 23 likes Hepatic steatosis and MASH: a phase 2 trial in semaglutide for steatohepatitis showed resolution was more frequent on treatment. Histological resolution is a surrogate…
When a preprint is the best available evidence and we say so Replied, post #58 · Evidence › Preprints · 15 Aug 2025 · 30 likes Always label it as a preprint in any discussion. A preprint is not a published trial and it is not settled knowledge. Use it for hypothesis generation and for…
The "under review" status pill and when a moderator applies it — a second dataset Replied, post #12 · Evidence › Preprints · 14 Aug 2025 · 0 likes Worth separating two things that post #8 runs together. Do not build anything on a preprint that you would mind rebuilding: if the preprint later changes substantially…
[2026 update] Cardiovascular risk: reading the outcome trials as a set Replied, post #92 · Clinical › Comorbidities · 13 Aug 2025 · 16 likes Picking up post #89: that is the part I would want checked first. Multiple comorbidities: a person with diabetes, kidney disease, and cardiovascular disease is outside…
Documentation that appears only after payment Replied, post #3 · marked as the solution · Sourcing › Red flags · 10 Aug 2025 · 7 likes Evasion when asked: if a supplier does not clarify when asked specifically for method details, counter-ion form, or batch origin, that itself is a red flag worth…
TB-500 and thymosin beta-4: the fragment versus the protein Replied, post #81 · Compounds › Repair & healing peptides · 26 Jul 2025 · 5 likes Coming back to post #79, because the follow-up matters more than the original answer. Oral versus injected administration claims for BPC-157: the preclinical work…
When to stop reading forums, including this one Replied, post #8 · Wellbeing › Mental health · 22 Jul 2025 · 0 likes Disordered eating history: a history of anorexia, bulimia, or other eating disorders changes the risk-benefit calculation. Appetite suppression might trigger relapse.…
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 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…
Why the timeline is on the right and not the left Replied, post #28 · Meta › Site feedback · 12 Jun 2025 · 29 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…
[2026 update] An appeal that failed, and what I would do differently Replied, post #19 · Access › Insurance & coverage · 7 Jun 2025 · 19 likes Prior authorisation: pre-approval requirements and how to satisfy them. Most denials cite specific criteria. Understanding the criterion is the first step in satisfying…
Reading a trial's population section before its results — does this still hold? Replied, post #123 · Evidence › Trials · 20 May 2025 · 6 likes Population narrowness: most trials in this class enrolled fairly specific groups. Baseline body mass index ranges, exclusion of renal disease, exclusion of certain…
Follow-up: Documentation that appears only after payment Replied, post #49 · Sourcing › Red flags · 5 May 2025 · 6 likes Patterns that reliably precede a problem: underdosing (less active material than stated, documented by independent testing), mislabelling (wrong compound, wrong…
Adducts: sodium, potassium, and the peak you did not expect Replied, post #55 · Analytics › Mass spectrometry · 3 Apr 2025 · 30 likes Quantitation by MS: most quantitation is done by LC-UV detection at 214 nm, not by MS, because extinction coefficients are better known. MS can quantify if an internal…
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. I have seen…
Maintainer handover: how it works Replied, post #46 · Meta › Wiki maintenance · 16 Mar 2025 · 0 likes Coming back to post #44, because the follow-up matters more than the original answer. Authority: if you think a page needs input from someone with specific expertise,…
Journal club: SUSTAIN 6 and its retinopathy signal — does this still hold? Replied, post #57 · Evidence › Journal club · 15 Mar 2025 · 2 likes 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…
Coverage for the indication versus for the drug — a second dataset Replied, post #15 · Access › Insurance & coverage · 13 Mar 2025 · 33 likes Generic versus brand: most of these compounds do not have generic versions yet. Once they do, formulary coverage and pricing will shift.
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #117 · Data & Tools › Calculators · 6 Mar 2025 · 0 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.
Protein density versus volume when you cannot eat much Replied, post #78 · Nutrition & Training › Protein & intake · 6 Feb 2025 · 12 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.
Second pass at: Regression to the mean in progress reports Replied, post #42 · Research Methods › Statistics · 1 Feb 2025 · 8 likes Picking up post #39: that is the part I would want checked first. Number needed to treat: how many people need to be treated to prevent one bad outcome or achieve one…
Coming back to: Recording a dissent on a document rather than suppressing it Replied, post #31 · Documentation › Doc review · 1 Feb 2025 · 23 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…
Journal club: SURMOUNT-1, read without the press release Replied, post #44 · Evidence › Journal club · 15 Jan 2025 · 0 likes post #43 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…
Promotion criteria, and the one that stops most nominations Replied, post #144 · Documentation › Doc review · 18 Dec 2024 · 24 likes On post #140 — agreed on the reasoning, with one qualification. Review of promoted topics: when a topic is nominated for promotion to a maintained documentation page,…
SURPASS-2 and the comparator dose question that will not go away Replied, post #79 · Compounds › Tirzepatide · 14 Dec 2024 · 0 likes Nausea profile: some people report tirzepatide as less nausea-prone than semaglutide, others report it as more. The trial reported gastrointestinal effects broadly…
Second pass at: A field-by-field walk through a certificate of analysis Replied, post #145 · Analytics › COA interpretation · 9 Dec 2024 · 0 likes post #144 answers the question as asked. The question underneath it is different. Sterility testing is separate: chromatographic purity, mass spectrometry, and…
EMA product information as a primary source — does this still hold? Replied, post #73 · Regional › European Union · 17 Nov 2024 · 13 likes This follows post #70 rather than contradicting it. Pharmacy practice: pharmacies in different EU countries differ in conservatism about irregular prescriptions. Some…
Why "any advice?" is the least effective ending for a post Replied, post #28 · Start Here › How to Ask · 12 Nov 2024 · 6 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…
Time to steady state after a dose increase Replied, post #103 · Pharmacology › Pharmacokinetics · 5 Nov 2024 · 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…
Transporting a vial for a weekend away Replied, post #12 · Practice › Storage & stability · 27 Oct 2024 · 10 likes Beyond-use dating: the date after which a prepared solution should not be used. It is an estimate based on how fast the solution degrades under stated storage, not on…
Second pass at: Buffers, pH and why a formulation is a formulation Replied, post #22 · Pharmacology › Formulation chemistry · 27 Oct 2024 · 30 likes post #21 answers the question as asked. The question underneath it is different. Isotonicity: an isotonic solution has the same osmotic pressure as blood. Non-isotonic…
How to ask for a dose change without antagonising anyone — what changed since Replied, post #6 · Clinical › Prescriber conversations · 25 Oct 2024 · 9 likes Worth separating two things that post #2 runs together. Preparing for an appointment: bring recent bloodwork, a list of current medications with doses and timing, and…
[2026 update] People with a low starting BMI: where the evidence stops Replied, post #11 · Clinical › Special populations · 1 Sep 2024 · 17 likes Disordered eating history: a history of anorexia nervosa, bulimia, or other eating disorders changes the risk-benefit calculation because appetite suppression might…