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pieter_maas

Member for 2.4 yearsMember since 2 Mar 2024Last seen 31 days agoFrom Tallinn, EE

I have made most of the reconstitution mistakes so you do not have to.

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30 answers · 4 accepted · highest score 97

97Does hair thinning at week eight of survodutide usually resolve without a dose change?accepted · answered 24 Sept 2025 · hair-loss, titration, survodutide 69Does aspartimide formation of oral semaglutide at room temperature show up as a loss of content or of purity?answered 22 Dec 2024 · peptide-stability, content-assay, purity 56What did the placebo arm of SURMOUNT-OSA report for hair thinning?accepted · answered 11 Mar 2026 · clinical-trials, hair-loss 56What is the thermal exposure on a Xi’an to Poland lane in summer?answered 22 Dec 2025 · cold-chain, international-shipping, storage 47What did the placebo arm of SURMOUNT-5 report for injection-site erythema?answered 17 Aug 2024 · clinical-trials, injection-site-reaction 47What is the reported incidence of hair thinning on oral semaglutide in PIONEER-1?answered 15 Sept 2024 · hair-loss, clinical-trials, oral-glp1 40Does cystatin C tell me anything about hepatic fat on survodutide?answered 8 Apr 2025 · liver-enzymes, mash, bloodwork 39Is hair thinning on oral semaglutide dose-dependent or dose-rate dependent?accepted · answered 20 Jun 2026 · hair-loss, titration, oral-glp1 38Does hydrolysis dominate for orforglipron held at 25 °C?answered 13 Feb 2025 · peptide-stability, storage, hplc 36Does vomiting at week nine of cagrilintide usually resolve without a dose change?answered 9 Jun 2026 · vomiting, titration, amylin 36What does REDEFINE-1 tell me about injection-site erythema at the 2.4 mg dose?accepted · answered 19 Jun 2025 · clinical-trials, injection-site-reaction, titration 35Is a rising lipase without symptoms actionable?answered 24 Feb 2026 · pancreatitis, bloodwork, harm-reduction 35What did the placebo arm of STEP 1 report for hair thinning?answered 20 Oct 2024 · clinical-trials, hair-loss 34What is the reported incidence of injection-site erythema on retatrutide in TRIUMPH-1?answered 7 Apr 2025 · injection-site-reaction, clinical-trials, retatrutide 32Would you re-test oral semaglutide after three weeks at 40 °C, or accept the original certificate?answered 25 Oct 2025 · batch-testing, peptide-stability, coa 31Does holding at 5 mg for six weeks before escalating reduce injection-site erythema?answered 7 Sept 2025 · titration, injection-site-reaction, dose-escalation 27At what point does upper abdominal pain warrant urgent assessment?answered 3 Dec 2024 · pancreatitis, gi-side-effects, harm-reduction 25Does site rotation actually have evidence behind it, and what kind of reaction warrants stopping?answered 14 Jul 2026 · injection-site-reaction, injection-technique, subcutaneous 23What differentiates an injection-site nodule from an infection?answered 1 Jul 2025 · injection-site-reaction, subcutaneous, harm-reduction 21Does holding at 0.5 mg for three weeks before escalating reduce injection-site erythema?answered 15 Feb 2026 · titration, injection-site-reaction, dose-escalation 21What did the placebo arm of SURMOUNT-OSA report for injection-site erythema?answered 30 Jun 2024 · clinical-trials, injection-site-reaction 18What did the placebo arm of ATTAIN-1 report for hair thinning?answered 13 Jan 2025 · clinical-trials, hair-loss 18Why does racemisation accelerate at 40 °C rather than proceeding linearly?answered 4 Mar 2025 · peptide-stability, storage, hplc 15What did the placebo arm of SURPASS-3 report for hair thinning?answered 28 Apr 2025 · clinical-trials, hair-loss 14Does hair thinning at week six of dulaglutide usually resolve without a dose change?answered 29 Aug 2025 · hair-loss, titration, dulaglutide 14Does holding at 5 mg for six weeks before escalating reduce injection-site erythema?answered 2 Nov 2025 · titration, injection-site-reaction, dose-escalation 14What did the placebo arm of PIONEER-1 report for injection-site erythema?answered 28 Feb 2025 · clinical-trials, injection-site-reaction 9Is lipase worth drawing at baseline before starting cagrilintide?answered 30 May 2026 · bloodwork, harm-reduction, a1c 6What is the dead-space loss per draw with a 31G needle at 4 mg/mL?answered 11 Feb 2026 · dead-space, insulin-syringe, dosing-math 3Is injection-site erythema on survodutide dose-dependent or dose-rate dependent?answered 4 Sept 2024 · injection-site-reaction, titration, survodutide

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titration12 posts injection-site-reaction12 posts clinical-trials11 posts hair-loss9 posts harm-reduction8 posts bloodwork7 posts peptide-stability6 posts oral-glp15 posts

Sigma-Aldrich

Certified reference materials with traceable certificates for analytical work.

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Tags

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Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questionsnutrition100

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Eating on a suppressed appetite: hitting nutritional targets inside a small energy budget, micronutrient risk, meal structure, and what the trial…

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Gauge and length selection, the trade-off between draw time and tissue trauma, coring risk with larger-bore needles, and why a fixed-needle…

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Certified reference materials and in-house standards: traceability, the certificate of the standard itself, system suitability, and why every…

185 questionssterility142

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142 questionsshelf-life327

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How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

327 questionsdiluent-volume295

diluent-volume

Choosing how much diluent to add, which is really a question about what you want your measurement resolution to be. Larger volumes buy you…

295 questionspeptide-stability908

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The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questionsmazdutide237

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A GLP-1 and glucagon receptor dual agonist developed primarily in China, with a distinct dose range and a fast-moving publication record.…

237 questionsclinical-trials745

clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

745 questionscold-chain578

cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

578 questionsliraglutide235

liraglutide

A once-daily GLP-1 receptor agonist and the compound that established the class. Still relevant for its shorter half-life, its paediatric and…

235 questionsinsulin-syringe244

insulin-syringe

U-100 and U-40 insulin syringes as measuring instruments. A U-100 syringe is graduated in insulin units where 100 units equals 1 mL, so one unit…

244 questionsmedutest126

medutest

Medutest, one of four independent testing and verification services referenced throughout this site. Use this tag for its methods, its report…

126 questionssurvodutide225

survodutide

A GLP-1 and glucagon receptor dual agonist with a substantial published MASH dataset. Use this tag for its hepatic endpoints, its dose ladder, and…

225 questionspeptidemeter107

peptidemeter

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107 questionspeptide-mapping103

peptide-mapping

Enzymatic digestion followed by LC-MS/MS to confirm sequence rather than just mass. The method that catches a scrambled sequence or a D-amino-acid…

103 questionsorforglipron219

orforglipron

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219 questionsharm-reduction472

harm-reduction

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472 questionsvendor-investigate113

vendor-investigate

VendorInvestigate, an independent vendor review and verification service. Use this tag for questions about its verification criteria, what a…

113 questionstirzepatide370

tirzepatide

A dual GIP and GLP-1 receptor agonist. Questions here cover the SURPASS and SURMOUNT programmes, the practical differences from a pure GLP-1…

370 questionsresearch-use-only95

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What "for research use only" means as a legal and practical designation: not approved for human use, no pharmacopoeial release testing, no…

95 questionscustoms196

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196 questionstitration456

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Stepwise dose increases over weeks, why the label schedules exist at all, and what tolerability-driven deviation from a schedule looks like in…

456 questionsjanoshik139

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139 questionsbloodwork296

bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

296 questions

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Questions5.2k

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