t.steenkamp

TL2 Member · Lund, SE

Based in the EU. Tracks what is available and funded locally, and dates every claim.

Joined 5 September 2025 · last posted 20d · groups: regional-eu

76 posts, newest first. Showing up to 150.

How shortages have affected compounding permissions — does this still hold? Replied, post #23 · Access › Shortages · 8 Jul 2026 · 6 likes post #22 is right about the mechanism and I think understates the practical bit. Shortage predictions: regulators and suppliers issue shortage alerts before they become…
Revisiting: The report format the maintainers ask for, and why each field is there Replied, post #93 · Sourcing › Vendor reports · 30 Jun 2026 · 29 likes Temporal patterns: if results from a supplier were good two years ago but have deteriorated recently, that is information. If they have been consistent over years, that…
Request: a per-category review queue Replied, post #65 · Meta › Feature requests · 28 Jun 2026 · 0 likes On post #61 — agreed on the reasoning, with one qualification. Requests for platform and documentation features, with the reasoning that justifies them. If you think…
Second pass at: Metformin co-administration and additive GI effects Replied, post #129 · Practice › Interactions · 19 Jun 2026 · 7 likes Worth separating two things that post #125 runs together. Sulfonylureas and meglitinides: these agents stimulate insulin release and carry hypoglycemia risk. Combining…
Tracking intake honestly when appetite is absent Replied, post #62 · Nutrition & Training › Protein & intake · 16 Jun 2026 · 21 likes Protein sources: animal sources (meat, fish, eggs, dairy) are denser and easier to hit targets with. Plant sources require higher volume. Neither is nutritionally…
A certificate whose chromatogram axes do not match its stated method — one year on Replied, post #50 · Sourcing › Red flags · 4 Jun 2026 · 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…
Coming back to: Specificity, linearity, accuracy, precision, range, robustness — with… Replied, post #42 · Analytics › Method validation · 4 Jun 2026 · 0 likes Stability-indicating method: one that can separate a compound from its degradation products. Critical for assay methods that claim to measure actual degradation (as…
[2026 update] A vial that will not fully dissolve: what to check and in what order Replied, post #58 · Practice › Reconstitution · 17 May 2026 · 7 likes post #57 answers the question as asked. The question underneath it is different. The decimal-point error: computing 5 mg / 2 mL as 0.25 mg/mL instead of 2.5 mg/mL is…
The 2.5 mg starting dose is not a therapeutic dose — why that matters Replied, post #127 · Compounds › Tirzepatide · 16 May 2026 · 18 likes post #126 is right about the mechanism and I think understates the practical bit. Titration schedules for tirzepatide have more dose steps than semaglutide partly…
Constipation management, with a dietitian's contribution Replied, post #64 · Practice › Side effects · 12 May 2026 · 33 likes On post #60 — agreed on the reasoning, with one qualification. Pancreatitis: a rare but serious event with a specific presentation (epigastric pain, back pain, elevated…
Step therapy requirements and how to satisfy them Replied, post #14 · Access › Insurance & coverage · 9 May 2026 · 3 likes Reimbursement changes: a compound covered one year might not be the next. A formulary decision in January can change by April. Checking again before refilling saves…
[2026 update] Thyroid function tests during substantial weight change Replied, post #58 · Clinical › Bloodwork · 5 May 2026 · 17 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…
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #13 · Analytics › Home & field testing · 3 May 2026 · 2 likes Molecular tests: DNA or RNA tests are not applicable to peptides, which do not contain nucleic acids. Peptide-specific tests rely on protein recognition, not…
Second pass at: Cagrilintide molecular characteristics and analytical considerations Started this topic · Compounds › Cagrilintide & amylin analogues · 1 May 2026 · 0 likes On the subject in the title: Second pass at: Cagrilintide molecular characteristics and analytical considerations Working notes rather than a conclusion. Session topic:…
Five questions in one post gets you one answer — how to split them Replied, post #65 · Start Here › How to Ask · 26 Apr 2026 · 0 likes post #64 answers the question as asked. The question underneath it is different. For anyone arriving from a search: the marked solution above is the direct answer, and…
[2026 update] Charge states for a 4 kDa peptide, worked through Replied, post #84 · Analytics › Mass spectrometry · 15 Apr 2026 · 25 likes On post #80 — agreed on the reasoning, with one qualification. Resolution: "high resolution" commonly means
Shakes versus food: a pragmatic assessment Replied, post #4 · Nutrition & Training › Protein & intake · 14 Apr 2026 · 0 likes Leucine and MPS: leucine stimulates muscle protein synthesis at a threshold of roughly 2 to 3 grams per meal. That influences how much protein per meal matters, but…
[2026 update] Regional warehouse stock versus direct despatch Replied, post #40 · Sourcing › Logistics · 12 Apr 2026 · 22 likes Coming back to post #38, because the follow-up matters more than the original answer. Cold packs and temperature control: inclusion of cold packs at despatch is…
Bug report: the reconstitution calculator and a rounding edge case Replied, post #37 · Data & Tools › Calculators · 6 Apr 2026 · 0 likes Picking up post #34: that is the part I would want checked first. Dose equivalence calculator: compounds have different potencies. The calculator is provided with a…
A supplier who responds to a discrepancy with silence — what changed since Replied, post #19 · Sourcing › Red flags · 20 Mar 2026 · 18 likes Patterns that reliably precede a problem: underdosing (less active material than stated, documented by independent testing), mislabelling (wrong compound, wrong…
Transporting a vial for a weekend away — a second dataset Replied, post #3 · Practice › Storage & stability · 6 Mar 2026 · 0 likes I read the opening post twice before replying, because I had assumed the opposite. Having read the exchange above, I think I was wrong earlier in this topic and I want…
Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #76 · Practice › Dosing & titration · 19 Feb 2026 · 0 likes Coming back to post #74, because the follow-up matters more than the original answer. When a dose reduction is the correct response to a side effect: if a side effect…
Pregnancy and pregnancy planning: contraindication and washout Replied, post #41 · Clinical › Special populations · 13 Feb 2026 · 0 likes post #40 is right about the mechanism and I think understates the practical bit. Pregnancy and planning: these compounds are not approved for use in pregnancy. Planning…
Second pass at: Identical chromatograms across two different lots Replied, post #3 · Sourcing › Red flags · 11 Feb 2026 · 12 likes Picking up post #2: that is the part I would want checked first. Safety documentation absent: a supplier that cannot provide information about sterility testing,…
"Greater than or equal to 99%" as a specification rather than a result Replied, post #124 · Analytics › COA interpretation · 3 Feb 2026 · 6 likes When method identifiers are missing: "reversed-phase HPLC" is less specific than "reversed-phase HPLC at 214 nm on a C18 column with a 10 to 40% acetonitrile gradient…
Second pass at: Pregnancy and pregnancy planning: contraindication and washout Replied, post #91 · Clinical › Special populations · 26 Jan 2026 · 1 like Hypoglycemia risk: in people already on insulin or sulfonylureas, adding a GLP-1 agonist requires insulin dose reduction and close monitoring for hypoglycemia. This is…
What to include when your question involves a chromatogram Replied, post #20 · Start Here › How to Ask · 4 Jan 2026 · 7 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…
Pinch or no pinch, and how needle length changes the answer — the long version Replied, post #4 · Practice › Administration · 29 Dec 2025 · 33 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,…
Vomiting: when it is expected and when it is a reason to stop Replied, post #31 · Practice › Side effects · 27 Dec 2025 · 30 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…
DXA precision and the least significant change for lean mass Replied, post #44 · Outcomes › Body composition · 5 Dec 2025 · 25 likes Lean mass loss during rapid weight reduction: depends on protein intake, resistance training volume, and total energy deficit. Adequate protein and maintaining training…
Sequence verification for an obscure compound: how it is done — what changed since Replied, post #12 · Compounds › Other compounds · 22 Nov 2025 · 3 likes Naming conventions for research peptides cause confusion because suppliers do not follow a standard. The same compound gets different names from different suppliers. If…
Pricing far outside the range, in either direction Replied, post #5 · Sourcing › Red flags · 19 Oct 2025 · 2 likes post #4 answers the question as asked. The question underneath it is different. Unresponsiveness: a supplier that does not reply to reasonable requests for…
The most useful thing you learned here that was not the answer you came for — a second… Replied, post #91 · Lounge › Off topic · 12 Oct 2025 · 11 likes Lower-stakes conversation that does not belong in the technical categories. Still civil, still sourced when a claim is made, but the bar for relevance is lower.
Pinch or no pinch, and how needle length changes the answer Replied, post #98 · Practice › Administration · 7 Oct 2025 · 28 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…
Documentation that materially improves an appeal's chances Replied, post #13 · Access › Insurance & coverage · 29 Sep 2025 · 9 likes post #12 answers the question as asked. The question underneath it is different. For anyone arriving from a search: the marked solution above is the direct answer, and…
When to stop reading forums, including this one Replied, post #30 · Wellbeing › Mental health · 27 Sep 2025 · 13 likes post #29 is right about the mechanism and I think understates the practical bit. Identity and self-image: for some people, weight and body size are central to identity.…
What a confidence interval means, from scratch — the long version Replied, post #2 · Research Methods › Statistics · 25 Sep 2025 · 0 likes This follows the opening post rather than contradicting it. Confidence intervals: rather than a single point estimate, a range of plausible values. A narrow interval…
How the vendor documentation pages are maintained, and by whom — what changed since Replied, post #53 · Sourcing › Vendor reports · 8 Sep 2025 · 0 likes Blind submission is worth the effort: have someone else relabel the sample so neither you nor the laboratory knows which supplier it came from until the result is back.…
Coming back to: What published stability data actually covers, and what it does not Replied, post #133 · Practice › Storage & stability · 6 Sep 2025 · 0 likes Worth separating two things that post #129 runs together. Freeze-thaw: some peptide solutions tolerate freezing poorly because ice crystals damage protein structure.…
Coming back to: Sample size calculations, read backwards from the published number Replied, post #81 · Evidence › Trials · 27 Aug 2025 · 1 like Dropout is information: high dropout rates can indicate tolerability problems or lower efficacy than the summary suggests. Where the analysis handled dropouts matters.…
Why oral semaglutide needs an absorption enhancer at all Replied, post #28 · Compounds › Oral incretins · 24 Aug 2025 · 10 likes SNAC is the sodium N-(8-[2-hydroxybenzoyl]amino) caprylate, an absorption enhancer that transiently raises local pH in the stomach and promotes gastric mucosal…
Research-use-only labelling: what it means and what it does not Replied, post #22 · Sourcing › Regulatory · 15 Aug 2025 · 2 likes I read post #20 twice before replying, because I had assumed the opposite. Regulatory positions change: a compound's status today might differ from its status a year…
A request that was declined, and the reasoning — a second dataset Replied, post #66 · Documentation › Wiki requests · 12 Aug 2025 · 31 likes post #65 is right about the mechanism and I think understates the practical bit. Cross-referencing: if you notice two pages that should reference each other but do not,…
Why one laboratory's 98.4% and another's 96.1% may not contradict Replied, post #16 · Analytics › Method validation · 5 Aug 2025 · 26 likes On post #12 — agreed on the reasoning, with one qualification. Limits of detection and quantitation: LOD is the lowest concentration that produces a signal above…
Coming back to: A community side-effect dataset, with its response rate and biases Replied, post #2 · Data & Tools › Datasets · 14 Jul 2025 · 1 like I read the opening post twice before replying, because I had assumed the opposite. Community-collected datasets: some members have compiled datasets from their own…
Revisiting: Filter needles: when they help and what they cost you Replied, post #36 · Devices › Syringes & needles · 13 Jul 2025 · 0 likes On post #32 — agreed on the reasoning, with one qualification. Needle gauge: smaller numbers (30G) are finer and less painful. Larger numbers (25G) are courser. For…
Comparing my trajectory with the trial curves, carefully Replied, post #20 · Outcomes › Progress reports · 3 Jul 2025 · 22 likes Picking up post #17: that is the part I would want checked first. Protein intake and resistance training: both self-reported and therefore optimistic in most reports.…
Repeatability versus intermediate precision Replied, post #39 · Analytics › Method validation · 22 Jun 2025 · 9 likes post #38 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…
Coming back to: Why quantitation is the hard part, not detection Replied, post #29 · Analytics › Home & field testing · 21 Jun 2025 · 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…
BPC-157: what the rodent literature actually shows, and what it does not Replied, post #6 · Compounds › Repair & healing peptides · 3 Jun 2025 · 2 likes This follows post #3 rather than contradicting it. Oral versus injected administration claims for BPC-157: the preclinical work studied injection. Oral claims are…
The CagriSema phase 2 paper and what a fixed combination buys Replied, post #50 · Compounds › Cagrilintide & amylin analogues · 2 Jun 2025 · 10 likes Worth separating two things that post #46 runs together. Nausea profile of amylin analogues: the historical agent pramlintide required multiple daily doses and had a…
Counter-ion content and its effect on measured mass Replied, post #47 · Analytics › Mass spectrometry · 25 May 2025 · 0 likes post #46 answers the question as asked. The question underneath it is different. Quantitation by MS: most quantitation is done by LC-UV detection at 214 nm, not by MS,…
Anxiety in the first weeks: drug, situation, or both Replied, post #82 · Wellbeing › Mental health · 1 May 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…
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #110 · Evidence › Journal club · 22 Apr 2025 · 0 likes Picking up post #107: that is the part I would want checked first. STEP 1 (N Engl J Med 2021): The pivotal obesity trial for semaglutide and the reference point for…
[2026 update] Building a sensible monitoring schedule with your prescriber Replied, post #3 · Clinical › Bloodwork · 3 Apr 2025 · 0 likes Picking up post #2: that is the part I would want checked first. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the…
Hepatic steatosis: what the MASH trial evidence supports Replied, post #8 · Clinical › Comorbidities · 26 Mar 2025 · 17 likes post #7 is right about the mechanism and I think understates the practical bit. Thank you for the correction. I have edited my earlier post with a note rather than…
About the Progress reports category Replied, post #3 · Outcomes › Progress reports · 26 Mar 2025 · 0 likes As a member rather than staff: the most useful thing I did when I started reading this category was to work through the tag pages rather than the topic list. The topic…
Cost per milligram, computed honestly across formats — the long version Replied, post #39 · Access › Pricing · 20 Mar 2025 · 13 likes Insurance tier placement: a compound might be covered but on a higher tier (higher copay). Moving to a lower tier usually requires prior authorization or documented…
Charge states for a 4 kDa peptide, worked through Replied, post #103 · Analytics › Mass spectrometry · 14 Mar 2025 · 17 likes Electrospray ionisation produces multiply charged ions. For a 4 kDa peptide you expect mostly 2+, 3+, and 4+ charge states. Reading an electrospray spectrum means…
Counter-ion form: the field almost nobody reports — one year on Replied, post #69 · Analytics › COA interpretation · 11 Mar 2025 · 20 likes Water content (residual moisture) matters: lyophilised peptide is not dry. A few percent water is normal. The difference between a TFA salt and an acetate salt can be…
Biased agonism: a real phenomenon, an over-used explanation Replied, post #63 · Pharmacology › Receptor biology · 8 Mar 2025 · 9 likes Bias and desensitisation: receptors can be biased (preferentially activating some downstream pathways over others) and can desensitise over time (responding less to the…
When to suspect the method rather than the sample Replied, post #55 · Analytics › Method validation · 24 Dec 2024 · 0 likes Coming back to post #53, because the follow-up matters more than the original answer. Robustness: the method gives consistent results when minor parameters vary. Tested…
Revisiting: Semaglutide formulation: what is in the licensed product besides the peptide Replied, post #25 · Compounds › Semaglutide · 21 Dec 2024 · 1 like The STEP programme populations were selected: enrollment criteria required baseline body mass index over 30, no recent blood pressure crisis, no recent retinopathy, no…
Follow-up: What this community means by "a source", in practical terms Replied, post #17 · Start Here › Welcome · 16 Dec 2024 · 1 like 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…
Coming back to: When to suspect the method rather than the sample Replied, post #52 · Analytics › Method validation · 10 Dec 2024 · 7 likes Worth separating two things that post #48 runs together. Specificity: the method can distinguish the intended compound from related impurities and degradation products.…
[2026 update] Step therapy requirements and how to satisfy them Replied, post #49 · Access › Insurance & coverage · 1 Dec 2024 · 7 likes Reimbursement changes: a compound covered one year might not be the next. A formulary decision in January can change by April. Checking again before refilling saves…
Why "any advice?" is the least effective ending for a post Replied, post #39 · Start Here › How to Ask · 15 Nov 2024 · 6 likes post #38 is right about the mechanism and I think understates the practical bit. Asking a follow-up: new topic or reply in the old one? If the answer depends on the…
When "no data" is the complete and final answer Replied, post #17 · Compounds › Other compounds · 8 Nov 2024 · 1 like I read post #15 twice before replying, because I had assumed the opposite. Sequence verification: for an obscure compound, a report of the amino acid sequence or a…
Revisiting: Melanocortin agonists: mechanism and the documented adverse profile Replied, post #63 · Compounds › Other compounds · 21 Oct 2024 · 27 likes post #62 is right about the mechanism and I think understates the practical bit. Thank you for the correction. I have edited my earlier post with a note rather than…
Revisiting: How to bring a laboratory report to an appointment usefully Replied, post #123 · Clinical › Bloodwork · 19 Oct 2024 · 3 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…
Requesting a page: what makes a good request — what changed since Replied, post #21 · Documentation › Wiki requests · 9 Oct 2024 · 26 likes Authority and authorship: if you think a maintained page needs input from someone with specific expertise (a clinician, an analytical chemist) suggest who might…
Second pass at: Reimbursement variation across member states Replied, post #10 · Regional › European Union · 17 Sep 2024 · 5 likes I read post #8 twice before replying, because I had assumed the opposite. Private prescription with self-payment is legal across the EU and is the common route where…
Follow-up: A site rotation scheme that is easy enough to actually follow Replied, post #15 · Practice › Administration · 8 Sep 2024 · 0 likes post #14 answers the question as asked. The question underneath it is different. Pinch or no pinch: the decision depends on needle length and on your own anatomy. A…
Correlation in a self-tracked dataset: what it can support Replied, post #60 · Research Methods › Statistics · 22 Aug 2024 · 0 likes Coming back to post #58, because the follow-up matters more than the original answer. Multiplicity and multiple comparisons: if you test many hypotheses, the chance of…
Circumference measurements as a poor man's composition estimate Replied, post #14 · Outcomes › Body composition · 23 Jul 2024 · 14 likes post #13 answers the question as asked. The question underneath it is different. Bioelectric impedance analysis: less precise than DXA and strongly affected by…
The mass-error checker and its intended scope Replied, post #79 · Data & Tools › Calculators · 27 Jun 2024 · 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…