sleep_log

TL2 Regular · Tromsø, NO

Sleep, apnoea, and the overlap with metabolic health.

Joined 24 October 2024 · last posted 15h

90 posts, newest first. Showing up to 150.

Reading a rodent study on a secretagogue without over-extrapolating — the long version Replied, post #66 · Compounds › Secretagogues & GH axis · 27 Jul 2026 · 18 likes CJC-1295 with and without DAC: the version with a drug affinity complex binds albumin covalently and persists for days. The version without it does not persist.…
Hair shedding at month three: mechanism and time course — the long version Replied, post #48 · Practice › Side effects · 16 Jul 2026 · 21 likes post #47 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…
Revisiting: Theoretical plates: useful number or ritual? Replied, post #19 · Analytics › HPLC & UHPLC · 13 Jul 2026 · 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…
[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #34 · Practice › Interactions · 11 Jul 2026 · 12 likes post #33 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…
Molecular mass of semaglutide and why the figure differs between sources Replied, post #98 · Compounds › Semaglutide · 11 Jul 2026 · 1 like On post #94 — agreed on the reasoning, with one qualification. The 165 to 184 hour range: that is roughly 7 to 7.6 days, which is why the weekly schedule works. Below 4…
Reference intervals: how they are constructed and why one in twenty flags — does this… Replied, post #13 · Clinical › Bloodwork · 5 Jul 2026 · 28 likes Biological variation: the person-to-person variation in a biomarker for a healthy person is larger than most people realize. Comparing your result to the reference…
Coming back to: Specificity, linearity, accuracy, precision, range, robustness — with… Replied, post #78 · Analytics › Method validation · 5 Jul 2026 · 25 likes 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…
What a reversed-phase purity number actually is Replied, post #18 · Analytics › HPLC & UHPLC · 2 Jul 2026 · 0 likes On post #14 — agreed on the reasoning, with one qualification. Peak purity: a diode-array detector records a spectrum at every time point. If a peak contains two…
Personal or family history of medullary thyroid carcinoma Replied, post #15 · Safety › Contraindications · 25 Jun 2026 · 6 likes post #14 answers the question as asked. The question underneath it is different. Gastroparesis or severe delayed gastric emptying: these compounds slow gastric…
Why we ask for units every single time, with three examples of what goes wrong Replied, post #54 · Start Here › How to Ask · 19 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.
Heart failure with preserved ejection fraction: symptom endpoints Replied, post #6 · Clinical › Comorbidities · 19 Jun 2026 · 9 likes Obstructive sleep apnoea: SURMOUNT-OSA used an objective endpoint, the apnoea-hypopnoea index. Reduction was substantial. Whether the benefit is weight loss or a direct…
Follow-up: Reading an interaction checker output critically Replied, post #8 · Practice › Interactions · 16 Jun 2026 · 9 likes Thyroid medications: semaglutide is associated with a slowing of gastric emptying, which might affect thyroid medication absorption if they are taken very close…
[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #15 · Access › International · 14 Jun 2026 · 0 likes post #14 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…
Does a peptide degrade silently, with no visual change? Replied, post #46 · Practice › Storage & stability · 12 Jun 2026 · 1 like I want to gently push back on the reply above about storage extrapolation. The advice is sound and the confidence is not. We are extrapolating from stability data on a…
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ — does this still hold? Replied, post #25 · Sourcing › Independent verification · 10 Jun 2026 · 31 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…
Coming back to: Why a preprint's supplementary material is often the best part Replied, post #75 · Evidence › Preprints · 10 Jun 2026 · 15 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…
A certificate whose chromatogram axes do not match its stated method — one year on Replied, post #58 · Sourcing › Red flags · 5 Jun 2026 · 13 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…
Blind submission and why it changes minds — the long version Replied, post #103 · Sourcing › Independent verification · 28 May 2026 · 28 likes When results are inconclusive: if a testing service reports "insufficient to verify" on a documentation review, that is not a negative finding about the product. It…
Rewriting my first post: a before-and-after, with commentary — what changed since Started this topic · Start Here › How to Ask · 14 May 2026 · 0 likes Posting this under the heading it deserves: Rewriting my first post: a before-and-after, with commentary — what changed since Everything below is what sits behind that.…
[2026 update] A vial that will not fully dissolve: what to check and in what order Replied, post #47 · Practice › Reconstitution · 10 May 2026 · 0 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…
Constipation management, with a dietitian's contribution Replied, post #52 · Practice › Side effects · 13 Apr 2026 · 0 likes Hair shedding: telogen effluvium associated with rapid weight loss is reported. The timing usually correlates with the speed of weight change rather than the compound…
Measurement error in home scales, with a worked standard deviation — the long version Replied, post #76 · Research Methods › Statistics · 12 Apr 2026 · 6 likes Picking up post #73: 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…
Second pass at: What pooling buys you and what it destroys Replied, post #31 · Evidence › Meta-analyses · 26 Mar 2026 · 32 likes On post #27 — agreed on the reasoning, with one qualification. Sensitivity analysis: the authors re-run the meta-analysis excluding studies one at a time, or by…
[2026 update] Thyroid function tests during substantial weight change Replied, post #22 · Clinical › Bloodwork · 24 Mar 2026 · 0 likes 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…
Second pass at: Metformin co-administration and additive GI effects Replied, post #72 · Practice › Interactions · 24 Mar 2026 · 32 likes Anticoagulants: no direct interaction with the compounds in this class. Weight loss and body composition changes might affect the clearance or effect of warfarin if you…
An ABAB design with a data table and honest limitations — a second dataset Replied, post #97 · Research Methods › N-of-1 designs · 24 Mar 2026 · 8 likes Blinding: blinding yourself (not knowing which condition you are in) removes expectation bias. This is hard to do with these compounds (the appetite suppression is hard…
Coming back to: A community side-effect dataset, with its response rate and biases Replied, post #41 · Data & Tools › Datasets · 22 Mar 2026 · 8 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…
An ABAB design with a data table and honest limitations — a second dataset Replied, post #74 · Research Methods › N-of-1 designs · 17 Mar 2026 · 10 likes post #73 is right about the mechanism and I think understates the practical bit. Statistical analysis of n-of-1 data: comparing before versus after with a t-test or…
Journal club: orforglipron phase 2 and the non-peptide question Replied, post #18 · Evidence › Journal club · 17 Mar 2026 · 23 likes I read post #16 twice before replying, because I had assumed the opposite. TRIUMPH (ongoing): Retatrutide phase 3. No results yet. Nothing should be attributed to it…
Splitting an overlong document into two Replied, post #8 · Documentation › Wiki requests · 17 Mar 2026 · 3 likes I read post #6 twice before replying, because I had assumed the opposite. Request a new maintained page: if a question recurs, has a good marked solution, and contains…
Interpreting a result that disagrees with the supplier's certificate Replied, post #135 · Sourcing › Independent verification · 23 Feb 2026 · 13 likes Blind sampling: submitting without the laboratory or seller knowing the source removes the two easiest ways for a result to be shaped: selective submission and…
Why "dose equivalence" between different incretin analogues is a weak concept Replied, post #44 · Practice › Dosing & titration · 17 Feb 2026 · 5 likes How the published trials escalated: they used specific step sizes and intervals. The STEP programme used a particular cadence; the SURPASS and SURMOUNT programmes used…
Journal club: semaglutide in MASH, and surrogate endpoints Replied, post #7 · Evidence › Journal club · 8 Feb 2026 · 0 likes SURPASS-2 (N Engl J Med 2021): Direct comparison of tirzepatide with semaglutide 1.0 mg. The 1.0 mg dose is not the highest available, which is the central and…
Seven-day rolling means and why weekly readings mislead — one year on Started this topic · Outcomes › Progress reports · 3 Feb 2026 · 7 likes On the subject in the title: Seven-day rolling means and why weekly readings mislead — one year on Working notes rather than a conclusion. Longitudinal report with the…
Dizziness on standing and the electrolyte explanation — does this still hold? Replied, post #36 · Practice › Side effects · 17 Jan 2026 · 0 likes Recognition and grading: nausea ranges from "noticeable" to "limiting". Constipation ranges from mild to severe. Having language to describe the magnitude helps you…
"Greater than or equal to 99%" as a specification rather than a result Replied, post #112 · Analytics › COA interpretation · 17 Jan 2026 · 4 likes Picking up post #109: that is the part I would want checked first. Purity and content are different measurements: purity tells you what proportion of the detected…
Vomiting: when it is expected and when it is a reason to stop Replied, post #21 · Practice › Side effects · 26 Dec 2025 · 0 likes Constipation: common, manageable, and frequently under-reported because it is not dramatic. Increasing fibre and fluid intake helps. Over-the-counter management is…
Heterogeneity as information rather than as a nuisance Replied, post #20 · Evidence › Meta-analyses · 9 Dec 2025 · 10 likes This follows post #17 rather than contradicting it. Inclusion and exclusion criteria: a meta-analysis is only as good as its inclusion criteria. If the criteria are too…
Coming back to: Over-dilution: when your dose falls below one readable graduation Replied, post #85 · Practice › Reconstitution · 22 Nov 2025 · 6 likes How much of the diluent volume the powder itself displaces: for a small peptide vial, the powder volume is negligible. For a larger vial or a kit with multiple…
Prescription requirements and telehealth models Replied, post #10 · Sourcing › Regulatory · 11 Nov 2025 · 2 likes Import restrictions vary by compound and by jurisdiction: what is a controlled substance in one place is legal to purchase in another. What you can import for personal…
Revisiting: Why tirzepatide titration schedules have more steps than semaglutide's Replied, post #28 · Compounds › Tirzepatide · 9 Nov 2025 · 0 likes Picking up post #25: that is the part I would want checked first. Titration schedules for tirzepatide have more dose steps than semaglutide partly because the compound…
Sleep quality changes during weight loss — what changed since Replied, post #49 · Wellbeing › Sleep · 3 Nov 2025 · 3 likes I read post #47 twice before replying, because I had assumed the opposite. Sleep quality versus quantity: some people report changes to sleep duration; others report…
NHS criteria and how they are applied in practice — the long version Replied, post #14 · Regional › UK & Ireland · 30 Oct 2025 · 6 likes NHS access has been restricted by commissioning criteria, not by licensing. Specialist weight-management services in many areas require prior weight-loss attempts, BMI…
Sleep tracking data and its considerable limitations Replied, post #123 · Wellbeing › Sleep · 29 Oct 2025 · 0 likes When sleep problems need attention: if sleep does not improve as weight loss continues or if it worsens, discussing with a clinician is prudent. Sleep disorders are…
Follow-up: What a seizure notice actually says Replied, post #2 · Sourcing › Logistics · 23 Oct 2025 · 12 likes Declaring contents accurately: declaring accurately reduces intervention risk. A declaration of "peptide research chemical, 5 grams" is better than "vitamin" or "other"…
Documentation that materially improves an appeal's chances Replied, post #23 · Access › Insurance & coverage · 9 Oct 2025 · 0 likes On post #19 — agreed on the reasoning, with one qualification. Tier placement and step therapy: some formularies place a medication on a higher tier or require you to…
The most useful thing you learned here that was not the answer you came for — a second… Replied, post #81 · Lounge › Off topic · 7 Oct 2025 · 18 likes Community norms: if you want to discuss how the community should work (not moderation decisions, which go in Meta) the Lounge is a place for that casual discussion.
The nausea timeline across the first four weeks, with a tabulated log Replied, post #81 · Practice › Side effects · 21 Sep 2025 · 14 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…
The nausea timeline across the first four weeks, with a tabulated log Replied, post #62 · Practice › Side effects · 14 Sep 2025 · 0 likes Injection site reaction: local erythema, nodules, or induration at injection sites is reported by some people. Site rotation, avoiding reinjection into the same area…
Analytical identity of BPC-157: a 15-mer with a simple mass Replied, post #6 · Compounds › Repair & healing peptides · 9 Sep 2025 · 1 like post #5 answers the question as asked. The question underneath it is different. Stability of BPC-157 in solution: what has been measured in published work covers…
Tracking that stops updating and then resumes — the long version Replied, post #10 · Sourcing › Logistics · 31 Aug 2025 · 0 likes Picking up post #7: 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…
How the vendor documentation pages are maintained, and by whom — what changed since Replied, post #47 · Sourcing › Vendor reports · 28 Aug 2025 · 24 likes post #46 is right about the mechanism and I think understates the practical bit. Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the…
Journal club: how we handle discontinuation in obesity trials — what changed since Replied, post #4 · Evidence › Journal club · 27 Aug 2025 · 10 likes post #3 is right about the mechanism and I think understates the practical bit. TRIUMPH (ongoing): Retatrutide phase 3. No results yet. Nothing should be attributed to…
Second pass at: Triple agonism: additive, synergistic, or neither? Replied, post #95 · Compounds › Retatrutide · 15 Aug 2025 · 26 likes I read post #93 twice before replying, because I had assumed the opposite. Glucagon receptor agonism seems paradoxical in a weight-loss compound because glucagon raises…
Freeze-thaw and why one cycle is not the same as five — a second dataset Replied, post #19 · Practice › Storage & stability · 3 Aug 2025 · 0 likes Visual inspection: if a solution is visibly cloudy, discoloured, or contains particles, those are red flags. Faint opalescence or minor colour shift may be normal but…
Freeze-thaw and why one cycle is not the same as five — a second dataset Replied, post #7 · Practice › Storage & stability · 15 Jul 2025 · 18 likes Dating prepared solutions: write the date reconstitution on the vial in permanent marker. If you later need to know whether it has been sitting for weeks or days, the…
DXA precision and the least significant change for lean mass — what changed since Started this topic · Outcomes › Body composition · 7 Jul 2025 · 2 likes DXA precision and the least significant change for lean mass — what changed since — setting out what I have, and where I think it stops being reliable. Maintenance…
High-resolution MS on aggregates and what it can see Replied, post #11 · Analytics › Mass spectrometry · 24 Jun 2025 · 8 likes Calibration matters: a high-resolution instrument out of calibration can report mass with ppm error large enough to be uninformative. Check when the instrument was last…
The CagriSema phase 2 paper and what a fixed combination buys — the long version Replied, post #120 · Compounds › Cagrilintide & amylin analogues · 17 Jun 2025 · 6 likes Is synergy the right word for the combination data? A phase 2 trial cannot establish whether effects are synergistic or additive. Synergy is a mechanistic claim that…
The CagriSema phase 2 paper and what a fixed combination buys — the long version Replied, post #94 · Compounds › Cagrilintide & amylin analogues · 14 Jun 2025 · 12 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…
Follow-up: Tracking intake honestly when appetite is absent Replied, post #30 · Nutrition & Training › Protein & intake · 6 Jun 2025 · 0 likes post #29 answers the question as asked. The question underneath it is different. Eating anything at all: on substantial appetite suppression, eating enough total…
Coming back to: Why quantitation is the hard part, not detection Replied, post #19 · Analytics › Home & field testing · 25 May 2025 · 24 likes Coming back to post #17, because the follow-up matters more than the original answer. Two things before anyone answers the substance. First, the context in the first…
Domestic fridge temperature mapping: a cheap experiment — what changed since Replied, post #82 · Devices › Cold chain · 9 Apr 2025 · 4 likes Reconstituted solutions: once reconstituted, solutions are less stable than lyophilised powder. Refrigerate prepared solutions immediately after preparation. Most…
Journal club: STEP 4 and what a withdrawal design can prove Replied, post #16 · Evidence › Journal club · 29 Mar 2025 · 33 likes post #15 is right about the mechanism and I think understates the practical bit. Critical appraisal template: (1) What did the trial set out to estimate? (2) Could the…
Documenting a supplier's response to a discrepancy — does this still hold? Replied, post #8 · Sourcing › Vendor reports · 20 Mar 2025 · 18 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…
Validating a method you did not develop — does this still hold? Replied, post #130 · Analytics › Method validation · 18 Mar 2025 · 24 likes Robustness: the method gives consistent results when minor parameters vary. Tested by deliberately varying pH, temperature, flow rate, and mobile phase composition…
Charge states for a 4 kDa peptide, worked through Replied, post #117 · Analytics › Mass spectrometry · 15 Mar 2025 · 0 likes Picking up post #114: that is the part I would want checked first. Tandem mass spectrometry: MS/MS fragments the molecular ion and uses fragment masses to confirm…
Asking about a compound your prescriber has not heard of Started this topic · Clinical › Prescriber conversations · 15 Mar 2025 · 1 like Asking about a compound your prescriber has not heard of Writing it up because I had to work it out twice and would rather nobody else did. General question, not a…
Biased agonism: a real phenomenon, an over-used explanation Replied, post #5 · Pharmacology › Receptor biology · 24 Feb 2025 · 0 likes Pharmacological class effects: all GLP-1 agonists slow gastric emptying and suppress appetite. Those are class effects, not unique to one compound. Effects that differ…
Anxiety in the first weeks: drug, situation, or both Replied, post #53 · Wellbeing › Mental health · 22 Feb 2025 · 6 likes Coming back to post #51, because the follow-up matters more than the original answer. Practical note that does not fit anywhere else. Whatever you conclude from this…
Canadian access and provincial variation Replied, post #40 · Regional › North America · 31 Jan 2025 · 15 likes Prior authorisation, step therapy, and exclusion of weight-management indications from coverage are common access barriers. The denial letter tells you which barrier…
Journal club: SUSTAIN 6 and its retinopathy signal — does this still hold? Replied, post #29 · Evidence › Journal club · 20 Jan 2025 · 27 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…
Revisiting: Semaglutide formulation: what is in the licensed product besides the peptide Replied, post #18 · Compounds › Semaglutide · 19 Dec 2024 · 0 likes Approved indications differ by jurisdiction and change. As of mid-2026 the weight-management indication is approved in many European jurisdictions but not all, and…
Second pass at: Choosing a concentration on purpose rather than by accident Replied, post #43 · Practice › Reconstitution · 10 Dec 2024 · 25 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…
[2026 update] Step therapy requirements and how to satisfy them Replied, post #59 · Access › Insurance & coverage · 7 Dec 2024 · 30 likes post #58 is right about the mechanism and I think understates the practical bit. Formulary status: the list of covered medications and the tier (how much you pay) they…
Journal club: STEP 4 and what a withdrawal design can prove — one year on Replied, post #12 · Evidence › Journal club · 4 Dec 2024 · 4 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…
Coming back to: When to suspect the method rather than the sample Replied, post #24 · Analytics › Method validation · 3 Dec 2024 · 18 likes Precision and repeatability: within-run and between-run variability of the method. Acceptance criterion is typically a relative standard deviation of ≤2% for area…
When to suspect the method rather than the sample Replied, post #45 · Analytics › Method validation · 3 Dec 2024 · 2 likes Specificity: the method can distinguish the intended compound from related impurities and degradation products. Tested by comparing results on pure compounds, mixtures…
Research-use-only status: what it means legally and practically — a second dataset Replied, post #29 · Compounds › Other compounds · 29 Nov 2024 · 7 likes Coming back to post #27, because the follow-up matters more than the original answer. Having read the exchange above, I think I was wrong earlier in this topic and I…
Follow-up: Where the four-week escalation interval comes from, and what it is not Replied, post #108 · Practice › Dosing & titration · 20 Nov 2024 · 12 likes The arithmetic of an intermediate dose: if the label says 1.0 mg and 2.0 mg, a dose strictly between them is off-label by definition. Some people compute it anyway. The…
EMA product information as a primary source — does this still hold? Replied, post #6 · marked as the solution · Regional › European Union · 14 Nov 2024 · 7 likes Picking up post #3: that is the part I would want checked first. Italy: AIFA controls reimbursement through a note system. Weight-management indications have not…
Revisiting: Melanocortin agonists: mechanism and the documented adverse profile Replied, post #110 · Compounds › Other compounds · 12 Nov 2024 · 6 likes AOD-9604 is a fragment of human growth hormone and has been discussed as a potential weight-loss agent based on theoretical mechanism. The fragment hypothesis — that…
Revisiting: How to bring a laboratory report to an appointment usefully Replied, post #153 · Clinical › Bloodwork · 28 Oct 2024 · 6 likes I read post #151 twice before replying, because I had assumed the opposite. TSH and free hormones: TSH is a reasonable screening test but does not tell you about actual…
Signs of dehydration worth acting on Replied, post #34 · Safety › Adverse events · 24 Oct 2024 · 7 likes Coming back to post #32, because the follow-up matters more than the original answer. Allergic reactions: true allergy (anaphylaxis, severe rash) is rare with these…
Revisiting: Melanocortin agonists: mechanism and the documented adverse profile Replied, post #53 · Compounds › Other compounds · 16 Oct 2024 · 0 likes Worth separating two things that post #49 runs together. AOD-9604 is a fragment of human growth hormone and has been discussed as a potential weight-loss agent based on…
Requesting a page: what makes a good request — what changed since Replied, post #11 · Documentation › Wiki requests · 9 Oct 2024 · 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…
Coming back to: Preparing for an appointment: one page, three questions Replied, post #72 · Clinical › Prescriber conversations · 7 Oct 2024 · 0 likes post #71 is right about the mechanism and I think understates the practical bit. Prescription logistics: confirm whether it will be filled locally, requires mail order,…
Splitting a vial for two laboratories: how to do it without ruining both — what changed… Replied, post #54 · Sourcing › Independent verification · 12 Sep 2024 · 29 likes post #53 answers the question as asked. The question underneath it is different. VendorInvestigate: documentation and supplier-practice review. Reviews paperwork rather…
Where the four-week escalation interval comes from, and what it is not Replied, post #10 · Practice › Dosing & titration · 31 May 2024 · 0 likes Steady state means the plasma concentration is stable from dose to dose. That happens around 4 to 5 half-lives. Before that, the concentration is rising with each dose.…
Assessing a warm arrival: the decision process — one year on Replied, post #61 · Sourcing › Logistics · 30 May 2024 · 1 like On post #57 — agreed on the reasoning, with one qualification. Customs holds: if a parcel is held at customs and you can contact customs directly, declaring your…