n.ekstrom

TL2 Regular · Turku, FI

Reads the analytics categories, posts in the practice ones. Slowly getting braver.

Joined 27 July 2025 · last posted 2d · groups: newcomer-guides

95 posts, newest first. Showing up to 150.

A critique that turned out to be unfair, retracted by its author Replied, post #38 · Evidence › Study critique · 26 Jul 2026 · 26 likes This follows post #35 rather than contradicting it. I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The…
[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #90 · Access › International · 18 Jul 2026 · 19 likes Regulatory position dates: a regulatory position is only current as of when it was written. Rechecking is prudent, especially if you saw it months ago.
Second pass at: Which categories are strict and which are relaxed, honestly Replied, post #87 · Start Here › Welcome · 4 Jul 2026 · 0 likes post #86 answers the question as asked. The question underneath it is different. Introducing yourself is fine and requires no question. Post in this subcategory,…
Forced degradation studies: designing one that is informative Replied, post #86 · Analytics › Method validation · 28 Jun 2026 · 16 likes Worth separating two things that post #82 runs together. Linearity: the detector response is proportional to compound concentration across the working range.…
Follow-up: The most useful thing you learned here that was not the answer you came for Replied, post #14 · Lounge › Off topic · 27 Jun 2026 · 20 likes This follows post #11 rather than contradicting it. Politics and public policy: healthcare policy that affects access to these compounds is relevant here. Partisan…
Retatrutide mass and identity: what a report should show Replied, post #3 · Compounds › Retatrutide · 23 Jun 2026 · 0 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.
Fasting versus non-fasting and which tests care Replied, post #53 · Clinical › Bloodwork · 21 Jun 2026 · 24 likes Lipid panel interpretation: total, LDL, HDL, triglycerides all on one panel. Reading them together is more informative than reading one value in isolation. An elevated…
Personal or family history of medullary thyroid carcinoma — what changed since Replied, post #69 · Safety › Contraindications · 11 Jun 2026 · 3 likes Gastroparesis or severe delayed gastric emptying: these compounds slow gastric emptying. Pre-existing severe gastroparesis can be worsened. That is a relative…
Journal club: orforglipron phase 2 and the non-peptide question Replied, post #82 · Evidence › Journal club · 4 Jun 2026 · 0 likes STEP 1 (N Engl J Med 2021): The pivotal obesity trial for semaglutide and the reference point for most subsequent comparison. Mean weight reduction was substantially…
A widely repeated interaction claim that turns out to be unsupported — what changed since Replied, post #55 · Practice › Interactions · 1 Jun 2026 · 0 likes post #54 is right about the mechanism and I think understates the practical bit. Food interactions: most interactions are absorption interactions. Some medications…
[2026 update] Charge states for a 4 kDa peptide, worked through Replied, post #135 · Analytics › Mass spectrometry · 2 May 2026 · 0 likes Mass accuracy is expressed in parts per million. It is the difference between observed and theoretical mass divided by theoretical mass, multiplied by a million. A…
Reading U-100 graduations, with a conversion table Replied, post #22 · Devices › Syringes & needles · 17 Apr 2026 · 0 likes Insulin syringe graduations: U-100 syringes are marked in units where 100 units = 1 mL. Always confirm your syringe is U-100. Confusion between insulin units and…
Spike-and-recover accuracy for a peptide assay Replied, post #126 · Analytics › Method validation · 11 Apr 2026 · 1 like This follows post #123 rather than contradicting it. Linearity: the detector response is proportional to compound concentration across the working range. Demonstrated…
[2026 update] What a purity-only report leaves out Replied, post #80 · Sourcing › Independent verification · 6 Apr 2026 · 5 likes Janoshik Analytical: chromatographic purity and mass-spectrometric identity on submitted samples. Reports are issued with the analytical method stated and a…
What a certificate commits its issuer to — one year on Replied, post #42 · Analytics › COA interpretation · 2 Apr 2026 · 6 likes Purity and content are different measurements: purity tells you what proportion of the detected material is the intended species. Content tells you how much of the…
[2026 update] Charge states for a 4 kDa peptide, worked through Replied, post #38 · Analytics › Mass spectrometry · 29 Mar 2026 · 20 likes post #37 is right about the mechanism and I think understates the practical bit. Calibration matters: a high-resolution instrument out of calibration can report mass…
Pinch or no pinch, and how needle length changes the answer — what changed since Replied, post #4 · marked as the solution · Practice › Administration · 12 Mar 2026 · 10 likes I read post #3 twice before replying, because I had assumed the opposite. Injection discomfort: comes from needle gauge (finer = less discomfort), volume (smaller =…
CJC-1295 with and without DAC: what the modification does Replied, post #5 · Compounds › Secretagogues & GH axis · 27 Feb 2026 · 22 likes Picking up post #2: 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…
Measurement error in a self-reported exposure Replied, post #89 · Evidence › Study critique · 26 Feb 2026 · 2 likes post #88 answers the question as asked. The question underneath it is different. Thank you for the correction. I have edited my earlier post with a note rather than…
Preprint servers and what screening they do — the long version Replied, post #2 · Evidence › Preprints · 23 Feb 2026 · 0 likes Server repositories: medRxiv for medicine, bioRxiv for biology. Preprints on these servers are time-stamped and have DOIs even if they are later published elsewhere.…
Stability of BPC-157 in solution: what has been measured — one year on Replied, post #10 · Compounds › Repair & healing peptides · 15 Feb 2026 · 0 likes Coming back to post #8, because the follow-up matters more than the original answer. Practical note that does not fit anywhere else. Whatever you conclude from this…
Coming back to: Reading a supplier's product description as a marketing document Replied, post #22 · Compounds › Other compounds · 12 Feb 2026 · 2 likes This subcategory exists because some people will research compounds outside the main groups discussed here. The standard of evidence and honesty about its limits…
How the published trials escalated, tabulated side by side Replied, post #6 · Practice › Dosing & titration · 11 Feb 2026 · 2 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…
Trifluoroacetate content and its consequences Replied, post #72 · Analytics › Impurities & related substances · 3 Feb 2026 · 0 likes Aggregates: multiples of the monomer mass. May not elute at all under a standard reversed-phase method. A species that does not come off the column does not appear in…
Why the titration planner refuses to produce a schedule below a floor Replied, post #32 · Data & Tools › Calculators · 25 Jan 2026 · 7 likes Units: all calculators explicitly require units to be stated. This prevents the decimal-point errors that come from forgetting units. Always verify units in and out.
Muscle cramps: the ordinary causes before the exotic ones Replied, post #10 · Practice › Side effects · 13 Jan 2026 · 27 likes Timeline matters: onset, duration, pattern over days or weeks, relationship to injection and to meals all provide information that "I have nausea" does not. Posting…
Revisiting: A page that has drifted out of date and needs a maintainer Replied, post #14 · Documentation › Wiki requests · 27 Dec 2025 · 0 likes I read post #12 twice before replying, because I had assumed the opposite. Suggesting content for a page: if you know a maintained page is missing something important,…
Comparing my trajectory with the trial curves, carefully Replied, post #92 · Outcomes › Progress reports · 18 Dec 2025 · 18 likes Picking up post #89: that is the part I would want checked first. Protein intake and resistance training: both self-reported and therefore optimistic in most reports.…
Persistent vomiting and the threshold for seeking help Replied, post #88 · Safety › Adverse events · 14 Dec 2025 · 0 likes On post #84 — agreed on the reasoning, with one qualification. Severe gastrointestinal events: persistent vomiting, abdominal pain out of proportion, or signs of bowel…
[2026 update] Long-time reader, first-time poster Replied, post #32 · Lounge › Introductions · 11 Dec 2025 · 14 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…
An inter-laboratory comparison on one lot, tabulated — what changed since Replied, post #23 · Analytics › Method validation · 7 Dec 2025 · 1 like Transfer between laboratories: a method can be transferred from one lab to another, but the receiving lab needs to demonstrate that they can achieve the same…
[2026 update] How much of the diluent volume the powder itself displaces Replied, post #30 · Practice › Reconstitution · 24 Nov 2025 · 21 likes This follows post #27 rather than contradicting it. 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…
Gauge and length selection for subcutaneous injection Replied, post #52 · Devices › Syringes & needles · 19 Nov 2025 · 5 likes On post #48 — agreed on the reasoning, with one qualification. Dead volume: residual liquid in the hub and needle after withdrawal. Typical residual is 0.01 to 0.02 mL…
Lurking for two months before posting: was that the right call? Replied, post #16 · Start Here › Welcome · 17 Nov 2025 · 32 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…
Pen dose counters: what a click does and does not guarantee Replied, post #46 · Devices › Pens & autoinjectors · 15 Nov 2025 · 16 likes Priming: most pens require priming before the first use (injecting a small amount to fill the needle and line). Not priming can result in no dose being delivered on the…
Tirzepatide's shorter half-life and its one practical consequence Replied, post #3 · Compounds › Tirzepatide · 13 Nov 2025 · 27 likes The 2.5 mg starting dose is not a therapeutic dose in the sense that weight loss is minimal at that dose. It is a tolerance-testing dose. Confusing the purpose of a…
Pen dose counters: what a click does and does not guarantee Replied, post #9 · Devices › Pens & autoinjectors · 12 Nov 2025 · 32 likes This follows post #6 rather than contradicting it. Needle installation: some pens require a fresh needle for each injection; others have a single needle that stays…
Follow-up: The decimal-point error, and the habit that catches it Replied, post #96 · Practice › Reconstitution · 10 Nov 2025 · 15 likes Swirling versus inverting versus leaving it alone: the vial can be gently warmed (hands around it) and swirled with a rolling motion. Vigorous shaking introduces air…
Freeze-thaw and why one cycle is not the same as five Replied, post #20 · Practice › Storage & stability · 8 Nov 2025 · 0 likes post #19 is right about the mechanism and I think understates the practical bit. Vial integrity: once a vial is entered with a needle repeatedly, the rubber closure…
Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #38 · Compounds › Semaglutide · 1 Nov 2025 · 0 likes Coming back to post #36, because the follow-up matters more than the original answer. The C-cell question: semaglutide triggered medullary thyroid carcinoma in rodent…
Research-use-only labelling: what it means and what it does not Replied, post #49 · Sourcing › Regulatory · 22 Oct 2025 · 0 likes post #48 is right about the mechanism and I think understates the practical bit. Primary documents matter: regulatory positions are published in official documents.…
High-resolution MS on aggregates and what it can see Replied, post #98 · Analytics › Mass spectrometry · 20 Oct 2025 · 0 likes post #97 answers the question as asked. The question underneath it is different. Mass accuracy is expressed in parts per million. It is the difference between observed…
New subcategory: rationale and scope Replied, post #72 · Meta › Announcements · 20 Oct 2025 · 10 likes When announcements are made: major policy changes, technical changes affecting site function, planned downtime, and changes to guidelines all get announced here.
What happens after your first post: likes, trust levels, and why none of it matters much… Replied, post #44 · Start Here › Welcome · 16 Oct 2025 · 9 likes Picking up post #41: that is the part I would want checked first. Off-topic posts that do not belong here belong in the Lounge instead. You are not in trouble if a…
Tracking that stops updating and then resumes — the long version Replied, post #21 · Sourcing › Logistics · 2 Oct 2025 · 0 likes Coming back to post #19, because the follow-up matters more than the original answer. Documentation after arrival: photograph the parcel and its contents on arrival. If…
Compounds this community declines to help with, and why Replied, post #18 · Compounds › Other compounds · 26 Sep 2025 · 0 likes Research-use-only status is a legal classification, not a safety classification. It means the compound is sold for laboratory use and not for human consumption or…
Reverse causation in a cohort study of weight and outcome — a second dataset Replied, post #43 · Evidence › Study critique · 13 Sep 2025 · 1 like On post #39 — agreed on the reasoning, with one qualification. Choosing the worst interpretation: "The confidence interval includes a harmful effect" is true if the CI…
[2026 update] Splitting an overlong document into two Replied, post #32 · Documentation › Wiki requests · 13 Sep 2025 · 0 likes Format suggestions: if you think a maintained page could be clearer in its presentation (different section structure, different examples, added graphics) suggest the…
Why fasting instructions for oral semaglutide are not optional advice — does this still… Replied, post #98 · Compounds › Oral incretins · 9 Sep 2025 · 0 likes The SOUL trial: cardiovascular outcomes trial for oral semaglutide in people with type 2 diabetes and cardiovascular disease or chronic kidney disease. It demonstrates…
Enforcement priorities versus written rules — does this still hold? Replied, post #38 · Sourcing › Regulatory · 31 Aug 2025 · 1 like Research-use-only status is a legal classification, not a safety classification. It means the compound is sold for laboratory use and not for human consumption. The…
[2026 update] US compounding rules and how they changed Replied, post #34 · Regional › North America · 27 Aug 2025 · 11 likes Worth separating two things that post #30 runs together. United States: FDA licenses compounds. Prescribing and pharmacy practice are state-regulated. Compounds are…
Are there stupid questions here? A staff answer, at length Replied, post #93 · Start Here › Welcome · 20 Aug 2025 · 0 likes Picking up post #90: that is the part I would want checked first. Your introduction is well framed. You have given enough context that people can actually answer. That…
[2026 update] Journal club: is percentage weight change the right endpoint? Replied, post #45 · Evidence › Journal club · 16 Aug 2025 · 1 like post #44 answers the question as asked. The question underneath it is different. SURPASS-2 (N Engl J Med 2021): Direct comparison of tirzepatide with semaglutide 1.0…
Are there stupid questions here? A staff answer, at length Replied, post #78 · Start Here › Welcome · 16 Aug 2025 · 15 likes Trust levels accumulate over time and they give you access to small things like the ability to edit your own posts without a timestamp. They are not a status symbol and…
Particulates in a reconstituted solution: identifying the likely source Replied, post #2 · Analytics › Impurities & related substances · 15 Aug 2025 · 23 likes On the opening post — agreed on the reasoning, with one qualification. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down…
A ten-fold dose error caught before injection — one year on Replied, post #44 · Devices › Syringes & needles · 2 Aug 2025 · 0 likes Needle length: typical lengths for subcutaneous injection are 4-6 mm (short), 8 mm (standard), or 10-12 mm (longer). Longer needles are needed for deeper tissue or if…
Revisiting: Reading a denial letter as a specification for your appeal Replied, post #63 · Access › Insurance & coverage · 31 Jul 2025 · 9 likes Formulary status: the list of covered medications and the tier (how much you pay) they are on. Checking the current formulary before going to a clinic appointment saves…
Coming back to: When "no data" is the complete and final answer Replied, post #65 · Compounds › Other compounds · 30 Jul 2025 · 0 likes Sequence verification: for an obscure compound, a report of the amino acid sequence or a mass-spectrometry result confirming the mass is the only verification that…
Anxiety in the first weeks: drug, situation, or both — what changed since Replied, post #9 · Wellbeing › Mental health · 23 Jul 2025 · 13 likes On post #5 — agreed on the reasoning, with one qualification. Mood and anxiety: mood changes and anxiety are reported by some people. Baseline mental health status…
How to read a forest plot, properly, from scratch Replied, post #7 · Evidence › Trials · 20 Jul 2025 · 0 likes On post #3 — agreed on the reasoning, with one qualification. Risk of bias: structured appraisal of internal validity. Key things to assess: randomisation method (was…
Why catalogue breadth is not evidence of anything — what changed since Started this topic · Compounds › Other compounds · 14 Jul 2025 · 58 likes Asking directly, because I could not find a straight answer: Why catalogue breadth is not evidence of anything — what changed since Session topic: SURMOUNT-1 ( N Engl J…
Antibiotics and a course of something with delayed emptying Replied, post #85 · Practice › Interactions · 8 Jul 2025 · 3 likes Worth separating two things that post #81 runs together. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather…
Airline travel with a temperature-sensitive injectable — what changed since Replied, post #38 · Devices › Cold chain · 13 Jun 2025 · 11 likes Reconstituted solutions: once reconstituted, solutions are less stable than lyophilised powder. Refrigerate prepared solutions immediately after preparation. Most…
The CagriSema phase 2 paper and what a fixed combination buys — the long version Replied, post #16 · Compounds › Cagrilintide & amylin analogues · 4 Jun 2025 · 9 likes Gastric emptying: both amylin and GLP-1 slow it, through partly overlapping but distinct mechanisms. Whether the slowing at a higher magnitude produces disproportionate…
About the Contraindications category Replied, post #6 · Safety › Contraindications · 27 May 2025 · 0 likes post #5 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 than…
A 10 mg vial reconstituted three different ways, compared — the long version Replied, post #59 · Practice › Reconstitution · 26 May 2025 · 8 likes Over-dilution: if your target dose is 0.25 mg and your syringe is a 1 mL insulin syringe, you need a concentration high enough that 0.25 mg fits on the scale. A 0.25…
Second pass at: A history of disordered eating: proceeding carefully Replied, post #56 · Wellbeing › Mental health · 23 May 2025 · 5 likes Identity and self-image: for some people, weight and body size are central to identity. Large change to body size can affect identity. This is not pathological; it is…
Travel coolers and how long they really hold — the long version Replied, post #15 · Devices › Cold chain · 22 May 2025 · 3 likes Light protection: avoid direct sunlight and UV exposure. Amber vials or opaque containers reduce light exposure. For short-term storage, keeping the vial in its…
A checklist for reading a certificate in under two minutes — does this still hold? Replied, post #6 · marked as the solution · Analytics › COA interpretation · 18 May 2025 · 11 likes What fields matter on a certificate: lot number matching the vial, test date, the analytical method stated specifically, the measured result as a number, and the…
Pregnancy as an absolute contraindication Replied, post #36 · Safety › Contraindications · 18 May 2025 · 0 likes On post #32 — agreed on the reasoning, with one qualification. Allergy to the specific compound: true allergy is rare but possible. Any prior allergic reaction to the…
Reading a trial's population section before its results — does this still hold? Replied, post #104 · Evidence › Trials · 15 May 2025 · 14 likes Dropout is information: high dropout rates can indicate tolerability problems or lower efficacy than the summary suggests. Where the analysis handled dropouts matters.…
A well-designed study with a badly written abstract Replied, post #77 · Evidence › Study critique · 12 May 2025 · 11 likes Confounding: in observational data, is there a third variable that explains the apparent association? In randomised data, randomisation should balance unknown…
BPC-157: what the rodent literature actually shows, and what it does not — a second… Replied, post #42 · Compounds › Repair & healing peptides · 6 May 2025 · 0 likes Reading a preclinical wound-healing model: the model shows whether a mechanism is plausible in a specific context. It does not show magnitude of effect in humans, does…
Follow-up: The lowest dose that does anything: is that a real question? Replied, post #7 · Practice › Dosing & titration · 21 Apr 2025 · 0 likes When a dose reduction is the correct response to a side effect: if a side effect is dose-dependent (nausea, constipation, injection discomfort), reducing the dose is a…
A report I filed that turned out to be wrong, and the correction Replied, post #10 · Sourcing › Vendor reports · 10 Apr 2025 · 0 likes post #9 answers the question as asked. The question underneath it is different. Pattern across lots: a single result is a data point. Three or four results from the…
Second pass at: Retatrutide mass and identity: what a report should show Replied, post #11 · Compounds › Retatrutide · 29 Mar 2025 · 8 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…
Journal club: SURMOUNT-1, read without the press release Replied, post #83 · Evidence › Journal club · 24 Mar 2025 · 21 likes On post #79 — agreed on the reasoning, with one qualification. Session format: read the paper before posting. The discussion is much better when everyone has. Start…
Why cagrilintide alone is discussed so much less than in combination Replied, post #13 · Compounds › Cagrilintide & amylin analogues · 23 Mar 2025 · 19 likes Picking up post #10: that is the part I would want checked first. Cagrilintide molecular characteristics: it is a synthetic amylin analogue, substituted to prevent the…
Oxidation and deamidation mass shifts, tabulated Replied, post #76 · Analytics › Mass spectrometry · 20 Mar 2025 · 19 likes post #75 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…
One lot is one lot: when a report becomes a pattern — the long version Replied, post #126 · Sourcing › Vendor reports · 18 Mar 2025 · 15 likes Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the other mass is water, counter-ion, and excipient. Purity and content are…
Adducts: sodium, potassium, and the peak you did not expect Replied, post #8 · Analytics › Mass spectrometry · 10 Feb 2025 · 1 like Picking up post #5: that is the part I would want checked first. Purity and identity are different questions: LC-MS establishes that the species at a retention time has…
[2026 update] Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #102 · Evidence › Journal club · 23 Jan 2025 · 1 like 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…
Second pass at: Regression to the mean in progress reports Replied, post #22 · Research Methods › Statistics · 11 Jan 2025 · 0 likes post #21 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…
[2026 update] New subcategory: rationale and scope Replied, post #105 · Meta › Announcements · 30 Dec 2024 · 5 likes This follows post #102 rather than contradicting it. Scheduled maintenance: if the site is going offline for maintenance, advance notice will be posted here with the…
Oral semaglutide bioavailability and its variability between people — a second dataset Replied, post #39 · Compounds › Oral incretins · 26 Dec 2024 · 13 likes Trial adherence in an oral trial with strict administration requirements is genuinely worse than trial-published data often suggests. That is why the exposure…
Injection-site reactions: describing them precisely enough to be useful Replied, post #62 · Practice › Side effects · 10 Dec 2024 · 6 likes Constipation: common, manageable, and frequently under-reported because it is not dramatic. Increasing fibre and fluid intake helps. Over-the-counter management is…
Asking about a compound your prescriber has not heard of — one year on Replied, post #14 · Clinical › Prescriber conversations · 9 Dec 2024 · 10 likes Understanding stopping rules: what would prompt stopping the compound? Adverse effect, lack of benefit after a defined time, or other reasons? Knowing in advance is…
EMA product information as a primary source — does this still hold? Replied, post #130 · Regional › European Union · 18 Nov 2024 · 3 likes Private prescription with self-payment is legal across the EU and is the common route where public reimbursement is not available.
A page that has drifted out of date and needs a maintainer Replied, post #22 · Documentation › Wiki requests · 26 Oct 2024 · 19 likes Cross-referencing: if you notice two pages that should reference each other but do not, suggest the cross-reference.
Requesting a page: what makes a good request — what changed since Replied, post #97 · Documentation › Wiki requests · 12 Oct 2024 · 0 likes Flag a page that has drifted: if you notice a maintained page has information that is outdated (dates that have passed, regulatory changes, new evidence) post a flag so…
Second pass at: Hoarding and why it makes a shortage worse Replied, post #75 · Access › Shortages · 12 Oct 2024 · 13 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…
SURPASS-2 and the comparator dose question that will not go away Replied, post #16 · Compounds › Tirzepatide · 15 Sep 2024 · 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…
A page that has drifted out of date and needs a maintainer Replied, post #4 · Documentation › Wiki requests · 22 Aug 2024 · 1 like Request a new maintained page: if a question recurs, has a good marked solution, and contains a worked example, it is a candidate for promotion to a maintained…
Cold packs, phase-change material, and what survives ten days Replied, post #64 · Sourcing › Logistics · 2 Jul 2024 · 0 likes Customs holds: if a parcel is held at customs and you can contact customs directly, declaring your personal use and providing documentation (order, labelling) can help.…
Follow-up: Dead volume across syringe and needle combinations Replied, post #2 · Devices › Syringes & needles · 19 Jun 2024 · 19 likes Reading units correctly: look at the marking from the side, not from above or below. The bottom of the plunger tip is the reading. Parallax error (wrong angle) is a…