c.lundgren

TL2 · Bologna

Contributes reviews on supplier material. Based in Bologna.

Joined 26 July 2025 · last posted 1d

79 posts, newest first. Showing up to 150.

Type 1 diabetes: off-label use and the evidence gap Replied, post #3 · Clinical › Special populations · 27 Jul 2026 · 1 like Genetic and ancestry-related differences in response are asked about regularly and the published evidence is thin enough that the honest answer is short. That is the…
What consumer-accessible tests can and cannot determine — a second dataset Replied, post #122 · Analytics › Home & field testing · 25 Jul 2026 · 22 likes Post #120 describes the usual case. This is about the unusual one. A home refractometer is not measuring what people hope it is measuring in these preparations, and the…
Molecular mass of semaglutide and why the figure differs between sources Replied, post #109 · Compounds › Semaglutide · 25 Jul 2026 · 2 likes Building on post #106 rather than restating it. The oral formulation is a genuinely different pharmaceutical problem from the injectable and shares only the active…
Insurance and replacement policies, compared Replied, post #116 · Sourcing › Logistics · 25 Jul 2026 · 0 likes That is a fair summary of where the discussion has got to.
Peak-to-trough ratio at steady state for a weekly agent — the long version Replied, post #59 · Pharmacology › Pharmacokinetics · 23 Jul 2026 · 20 likes Agreed on all of that, and I have nothing to add to it.
Pooling trials with different estimands Replied, post #120 · Evidence › Meta-analyses · 22 Jul 2026 · 5 likes Post #116 put the caveat in the right place and I want to underline it. I have been on both sides of the pooling trials with different estimands argument in this…
An appeal that succeeded, with the letter structure Replied, post #16 · Access › Insurance & coverage · 22 Jul 2026 · 0 likes Narrowing post #15, because the general version has more than one answer. Appeal is well covered in the tag pages, and the older discussions are better than the recent…
Revisiting: Protein density versus volume when you cannot eat much Replied, post #79 · Nutrition & Training › Protein & intake · 18 Jul 2026 · 0 likes Post #76 answers the question as asked. The question underneath it is different. Published guidance on protein during weight loss is reasonably consistent and is easy…
A single out-of-range value on an otherwise normal panel Replied, post #73 · Clinical › Bloodwork · 15 Jul 2026 · 18 likes Understood. Thank you for being specific about the limits of it.
Completing a dose with a second syringe, and the dead-volume arithmetic Replied, post #67 · Practice › Administration · 8 Jul 2026 · 1 like Subcutaneous injection into abdominal tissue, thigh or upper arm is what the licensed labelling in this class describes, and the published comparisons found the…
Ultrasound and skinfolds: operator dependence in practice Replied, post #46 · Outcomes › Body composition · 6 Jul 2026 · 0 likes The arithmetic in post #45 is right; the assumption feeding it is the part to check. I changed my mind about ultrasound and skinfolds after someone here asked me for…
Pooling trials with different estimands Replied, post #72 · Evidence › Meta-analyses · 5 Jul 2026 · 2 likes Where the included trials share a sponsor and a protocol template, their errors correlate and pooling does not average them out.
Reference intervals: how they are constructed and why one in twenty flags — does this… Replied, post #10 · Clinical › Bloodwork · 28 Jun 2026 · 4 likes Time of day: some biomarkers vary across the day. Cortisol in the morning differs from cortisol in the evening. Comparing results from different times of day is…
Does dual agonism explain the effect size, or is it dose? Replied, post #49 · Compounds › Tirzepatide · 20 Jun 2026 · 1 like Post #47 put the caveat in the right place and I want to underline it. Titration schedules for tirzepatide have more dose steps than semaglutide partly because the…
A supplier who responds to a discrepancy with silence — what changed since Replied, post #64 · Sourcing › Red flags · 16 Jun 2026 · 2 likes Understood, and I withdraw the assumption I opened with.
A structured critique template this community uses — a second dataset Replied, post #9 · Evidence › Study critique · 13 Jun 2026 · 15 likes Agreed on structured critique template, with one qualification that I think matters. The reasoning holds for the case as described. Change the starting assumption and…
Micro-titration: a disputed topic, argued properly — one year on Replied, post #48 · Practice › Dosing & titration · 11 Jun 2026 · 21 likes Concentration and dose get conflated constantly in this subcategory. Changing how much diluent you add changes the volume you draw and changes nothing about the dose.
An 18-month record including the parts that went badly Replied, post #38 · Outcomes › Progress reports · 11 Jun 2026 · 2 likes Post #36 put the caveat in the right place and I want to underline it. A single scale used throughout beats a more accurate scale introduced halfway through.…
Insomnia at a dose step: reported experiences — the long version Replied, post #32 · Wellbeing › Sleep · 10 Jun 2026 · 12 likes Eating patterns shift substantially and late intake affects sleep independently of anything pharmacological.
Why we ask for units every single time, with three examples of what goes wrong Replied, post #14 · Start Here › How to Ask · 2 Jun 2026 · 0 likes Units. Everything needs units. This is why we ask every single time. I have seen the same arithmetic done three different ways depending on whether the person was…
Journal club: indirect comparison between two programmes, defended and attacked Replied, post #52 · Evidence › Journal club · 9 May 2026 · 24 likes Post #49 and I disagree about the size of the effect, not about the direction. What would change my mind on indirect comparison is a second dataset collected by someone…
Vomiting: when it is expected and when it is a reason to stop — one year on Replied, post #7 · Practice › Side effects · 6 May 2026 · 5 likes The published rates come from populations that were titrated on a defined schedule with clinical supervision. Rates from a forum are not comparable and are biased by…
Type 2 diabetes and the largest part of the evidence base Replied, post #81 · Clinical › Comorbidities · 24 Apr 2026 · 21 likes The bit of type 2 diabetes that nobody enjoys is that the answer changes depending on what you are trying to decide with it. Say what the decision is and the thread…
Spike-and-recover accuracy for a peptide assay Replied, post #74 · Analytics › Method validation · 9 Apr 2026 · 0 likes Adding a data point of agreement rather than a data point.
Revisiting: The report format the maintainers ask for, and why each field is there Replied, post #47 · Sourcing › Vendor reports · 7 Apr 2026 · 5 likes Reports of ordinary results are more valuable than reports of remarkable ones, precisely because only the remarkable ones get posted elsewhere. Happy to be the one who…
Coming back to: Washout: how long is long enough, and for what purpose Replied, post #96 · Pharmacology › Pharmacokinetics · 6 Apr 2026 · 2 likes The reason Washout keeps being re-asked is that the answer is conditional and people quote it without the condition. It is not that the answer is unknown.
Labelling requirements for research chemicals Replied, post #6 · Sourcing › Regulatory · 1 Apr 2026 · 27 likes Picking up post #4: that is the part I would want checked first. Labelling and intended use: a compound sold as "research-use-only" does not change its pharmacology if…
The 2.5 mg starting dose is not a therapeutic dose — why that matters Replied, post #59 · Compounds › Tirzepatide · 27 Mar 2026 · 14 likes I disagree with the framing of 2.5 mg starting dose above, and I think it is a substantive disagreement rather than a terminological one. Setting out why, so it can be…
Pregnancy and pregnancy planning: contraindication and washout Replied, post #87 · Clinical › Special populations · 26 Mar 2026 · 0 likes Summarising the pregnancy and pregnancy planning thread so far, since it is long and the answer is buried: the first reply has the method, the fourth has the correction…
Second pass at: Choosing a concentration on purpose rather than by accident Replied, post #39 · Practice › Reconstitution · 11 Mar 2026 · 0 likes This follows post #36 rather than contradicting it. Worth separating Choosing a concentration as a question about the compound from Choosing a concentration as a…
[2026 update] Publication patterns in the BPC-157 literature, examined Replied, post #15 · Compounds › Repair & healing peptides · 9 Mar 2026 · 13 likes BPC-157: the preclinical literature is extensive, mostly from a small number of research groups, and reports effects across a wide range of injury models. The breadth…
Contributing data without breaching anyone's privacy Replied, post #15 · Data & Tools › Datasets · 3 Mar 2026 · 8 likes Adding thanks rather than a view. I do not have a view worth the space.
[2026 update] Thyroid function tests during substantial weight change Replied, post #7 · Clinical › Bloodwork · 2 Mar 2026 · 0 likes This settles it for me, at least until somebody posts a reason it should not.
The lowest dose that does anything: is that a real question? Replied, post #23 · Practice › Dosing & titration · 2 Mar 2026 · 4 likes Escalating before steady state means you are judging a dose you have not yet fully experienced. That is the whole argument against compressing the schedule and it is a…
Measurement error in a self-reported exposure Replied, post #44 · Evidence › Study critique · 24 Feb 2026 · 25 likes Everything in post #42 holds. The case it does not cover is the one I have. Small methodological point on measurement error: repeating a measurement is cheap and…
Journal club: STEP 3 and the intensive behavioural therapy floor Replied, post #5 · Evidence › Journal club · 16 Feb 2026 · 27 likes The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions. The general…
Coming back to: Training through a dose escalation week Replied, post #18 · Nutrition & Training › Resistance training · 30 Jan 2026 · 6 likes Distinguishing three things in the Training through a dose escalation discussion that keep getting used interchangeably: the observation, the proposed mechanism, and…
Second pass at: Pregnancy and pregnancy planning: contraindication and washout Replied, post #57 · Clinical › Special populations · 24 Jan 2026 · 1 like Post #54 answers the question as asked. The question underneath it is different. Reporting rather than recommending, on Pregnancy and pregnancy planning. What happened…
Non-inferiority margins: how they are chosen and how they are abused Replied, post #22 · Evidence › Trials · 8 Dec 2025 · 0 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…
Why an oral GLP-1 agonist is a formulation achievement more than a chemistry one Replied, post #24 · Compounds › Oral incretins · 31 Oct 2025 · 30 likes Picking up post #21: that is the part I would want checked first. Oral semaglutide's bioavailability is low and variable, which is why the dose numbers are an order of…
Follow-up: Why appetite effects are mostly central Replied, post #80 · Pharmacology › Receptor biology · 28 Oct 2025 · 2 likes Endogenous versus pharmacological receptor engagement differ in magnitude and in duration by orders of magnitude. Arguments from "it is a natural hormone" do not…
Temperature loggers worth the money Replied, post #44 · Devices › Cold chain · 20 Oct 2025 · 3 likes Answering the temperature loggers worth the money question as asked, then the question I think is meant. As asked: yes, with the qualification below. As meant: it…
Bleeding at the injection site: normal, and what to do about it Replied, post #2 · Practice › Administration · 11 Oct 2025 · 5 likes Site reactions that appear immediately and settle within a day are described commonly here. Ones that appear a day later and spread are a different observation and…
Column chemistry choices for a 40-residue peptide Replied, post #38 · Analytics › HPLC & UHPLC · 16 Sep 2025 · 9 likes Adding the boring version of column chemistry choices, because the interesting version keeps getting posted and the boring one is usually right. Check the ordinary…
Request: a diff view for wiki revisions — the long version Replied, post #42 · Meta › Feature requests · 13 Sep 2025 · 20 likes Request that would help newcomers more than regulars: show the subcategory description on hover in the category list. The names are terse and the descriptions are good.…
Liver enzymes drifting down and what that usually means Replied, post #9 · Clinical › Bloodwork · 5 Sep 2025 · 22 likes I read the earlier replies on liver enzymes drifting twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was…
When a preprint is the best available evidence and we say so Replied, post #125 · Evidence › Preprints · 1 Sep 2025 · 8 likes Post #124 and I disagree about the size of the effect, not about the direction. Where a preprint contradicts a published trial, the prior should favour the trial. Where…
Second pass at: Why this subcategory is stricter about sourcing than most Replied, post #118 · Compounds › Secretagogues & GH axis · 31 Aug 2025 · 12 likes Confirming post #116 from a second method, which matters more than confirming it from a second person. Evidence quality in the secretagogue literature is honestly…
High-resolution MS on aggregates and what it can see Replied, post #42 · Analytics › Mass spectrometry · 12 Aug 2025 · 30 likes On high-resolution: the maintained page in the documentation commons covers the general case with citations and a review date, which is more reliable than any reply…
Substitution between formats during a shortage Replied, post #36 · Access › Shortages · 9 Aug 2025 · 23 likes Second-hand on substitution between formats, so weight it accordingly — someone whose method I trust told me this and I have not verified it myself.
A ten-fold dose error caught before injection — one year on Replied, post #110 · Devices › Syringes & needles · 4 Aug 2025 · 1 like Taking post #108 at face value and following it one step further. Needle length: typical lengths for subcutaneous injection are 4-6 mm (short), 8 mm (standard), or…
Interim analyses and stopping rules — does this still hold? Replied, post #34 · Evidence › Trials · 5 Jul 2025 · 0 likes Adding the measurement that post #31 says would settle it. Practical experience of Interim analyses and stopping rules, offered as one case with the conditions stated,…
Revisiting: German, French and Dutch differences, compared Replied, post #41 · Regional › European Union · 4 Jul 2025 · 30 likes Building on post #40 rather than restating it. Genuine question rather than a rhetorical one: has anyone here actually observed German, as opposed to read about it? The…
Coming back to: Sample size calculations, read backwards from the published number Replied, post #48 · Evidence › Trials · 29 Jun 2025 · 11 likes Post #44 describes the usual case. This is about the unusual one. Where the Sample size calculations reasoning breaks down for me is the step from the group result to…
Specification in the result column: why that is a meaningful error Replied, post #12 · Analytics › COA interpretation · 25 Jun 2025 · 5 likes A document that puts the specification in the result column has told you the release criterion rather than the measurement. Those are different claims and the…
Semaglutide versus liraglutide head to head: reading STEP 8 carefully Replied, post #10 · Compounds › Semaglutide · 4 Jun 2025 · 0 likes Saving this. It is the version I will quote when the question comes round again.
Coming back to: What published stability data actually covers, and what it does not Replied, post #36 · Practice › Storage & stability · 7 May 2025 · 0 likes Post #32 describes the usual case. This is about the unusual one. Clarity is a weak test. A solution can lose a significant fraction of its active content to…
Talking to a therapist about this specifically — does this still hold? Replied, post #57 · Wellbeing › Mental health · 7 May 2025 · 4 likes Confirming post #56 from a second method, which matters more than confirming it from a second person. The social side of this — how other people respond to visible…
Second pass at: Journal club: STEP 4 and what a withdrawal design can prove Replied, post #7 · Evidence › Journal club · 4 Apr 2025 · 4 likes This settles it for me, at least until somebody posts a reason it should not.
Pancreatitis history and the risk calculus — a second dataset Replied, post #28 · Safety › Contraindications · 23 Mar 2025 · 7 likes The number people quote for Pancreatitis history is a central estimate presented without its interval, and the interval is wide enough that the estimate is nearly…
A ten-fold dose error caught before injection Replied, post #11 · Devices › Syringes & needles · 20 Mar 2025 · 21 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…
Coming back to: How to tell whether your question is already answered on a maintained page Replied, post #3 · Start Here › Welcome · 1 Mar 2025 · 0 likes Right — I had this wrong and I am glad to have read it before it mattered.
Canadian access and provincial variation Replied, post #2 · Regional › North America · 18 Jan 2025 · 19 likes I had written a reply contradicting the opening post and deleted it. Here is what survived. Two claims get bundled together under canadian access and provincial…
Follow-up: Tirzepatide's shorter half-life and its one practical consequence Replied, post #129 · Compounds › Tirzepatide · 4 Jan 2025 · 3 likes Post #126 answers the question as asked. The question underneath it is different. Research-use-only tirzepatide is not approved for human use and is not made to…
Escalating every six weeks instead of four: what I observed over eight months Replied, post #3 · Practice › Dosing & titration · 31 Dec 2024 · 15 likes The confident answers on escalating every six weeks instead and the well-sourced answers are not the same answers, which is the most useful thing I have learned reading…
Fixed versus detachable needles: the trade-offs Replied, post #75 · Devices › Syringes & needles · 27 Dec 2024 · 12 likes Post #71 describes the usual case. This is about the unusual one. Marking my uncertainty on fixed versus detachable needles explicitly. I am confident about the…
Molecular mass of semaglutide and why the figure differs between sources — does this… Replied, post #60 · Compounds › Semaglutide · 22 Dec 2024 · 1 like The C-cell question: semaglutide triggered medullary thyroid carcinoma in rodent toxicology studies. A signal in rodents does not automatically appear in humans, but it…
Washout with a one-week half-life: the arithmetic Replied, post #67 · Research Methods › N-of-1 designs · 4 Dec 2024 · 7 likes Having read the whole washout thread before replying: the question in the first post has not actually been answered yet, and three of us have answered a nearby one…
Reading a preclinical wound-healing model and its relevance to a human tendon Replied, post #122 · Compounds › Repair & healing peptides · 23 Nov 2024 · 5 likes Picking up post #121: that is the part I would want checked first. A note on scope: what I am saying about reading a preclinical wound-healing model applies to the case…
Follow-up: Recovery when intake is low: what to cut first Replied, post #3 · Nutrition & Training › Resistance training · 1 Nov 2024 · 29 likes Intensity: using weights that allow 6 to 12 reps before fatigue is a reasonable range for preserving muscle. Heavier weights with lower reps can work but require more…
Second pass at: Food noise reducing and the disorientation that can follow Replied, post #58 · Wellbeing › Mental health · 29 Oct 2024 · 1 like The confident answers on Food noise and the well-sourced answers are not the same answers, which is the most useful thing I have learned reading this category.
Requesting a page: what makes a good request — what changed since Replied, post #51 · Documentation › Wiki requests · 11 Oct 2024 · 0 likes Grateful for the specificity. Vague answers to this question are what sent me looking.
Revisiting: Melanocortin agonists: mechanism and the documented adverse profile Replied, post #13 · Compounds › Other compounds · 22 Sep 2024 · 0 likes Post #9 put the caveat in the right place and I want to underline it. On analysis: unusual or modified sequences are exactly where a default reversed-phase method is…
Second pass at: Sodium, potassium and magnesium when intake drops Replied, post #66 · Nutrition & Training › Hydration & electrolytes · 30 Aug 2024 · 13 likes Baseline measurements before a substantial change in intake give you something to compare against, and almost nobody has them. I have changed my mind on this once…
Orforglipron as a non-peptide: what changes when the molecule is small Replied, post #19 · Compounds › Oral incretins · 29 Aug 2024 · 31 likes Answering the question post #15 raises rather than the one it answers. PIONEER 6 was a cardiovascular safety trial for oral semaglutide, not an efficacy trial.…
Coming back to: Purity assay versus content assay: two different numbers Replied, post #38 · Analytics › COA interpretation · 11 Aug 2024 · 28 likes That matches what I have seen, for whatever a single anecdote is worth.
Coming back to: Preparing for an appointment: one page, three questions Replied, post #32 · Clinical › Prescriber conversations · 5 Aug 2024 · 0 likes Prescription logistics: confirm whether it will be filled locally, requires mail order, or will be prescribed off-label and needs a compounding pharmacy. Different…
Assessing a warm arrival: the decision process — one year on Replied, post #77 · Sourcing › Logistics · 31 May 2024 · 32 likes Adding the measurement that post #76 says would settle it. Cold packs and temperature control: inclusion of cold packs at despatch is standard. Whether they maintain…
Assessing a warm arrival: the decision process — one year on Replied, post #5 · Sourcing › Logistics · 28 May 2024 · 16 likes Agreed on Assessing a warm arrival, with one qualification that I think matters. The reasoning holds for the case as described. Change the starting assumption and it…