PeptideStack
5.2kquestions
20kanswers
220users

dosing-math

Page 34 of 34 · 811 questions tagged dosing-math.

811 questions · sorted by votes · page 34 of 34

2 votes 5 answers7.3k views
Is 30 mg weekly a defensible maintenance dose for dulaglutide?

Numbers first: 30 mg · dulaglutide. I would rather over-plan the first cycle and simplify later. I am prepared to do the work if someone can tell me which work…

maintenance-dose
maintenance-dose

Staying put: the lowest dose that holds a result, the difference between the maximum studied dose and the maximum useful dose, and what the…

44 questions
clinical-trials
clinical-trials

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

913 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by rukhsana_iqbal 14k · 6 months ago
2 votes5 answers7.2k views
How do I get 15 units out of a vial reconstituted to 10 mg/mL without guessing?

Details up front: 15 units · 10 mg/mL. I would like to understand the steps well enough to explain them to someone else. I have access to a refrigerator with a logger…

insulin-syringe
insulin-syringe

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

268 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
diluent-volume
diluent-volume

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

308 questions
asked by nominal_ten 14k · 5 months ago
2 votes4 answers4.8k views
Why does STEP 1 report two different weight-loss figures?

I have three data points across nine months, which I hope is enough to see a trend. This is presented as though it settles something, and I am not convinced it does.…

clinical-trials
clinical-trials

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

913 questions
semaglutide
semaglutide

A GLP-1 receptor agonist with a fatty-acid-acylated backbone and a roughly one-week half-life, marketed for type 2 diabetes and for weight…

360 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by priya_menon 11k · 3 months ago
2 votes0 answers3.5k views
If I reconstitute a 2.5 mg vial with 1 mL of 0.9% sodium chloride, what concentration do I end up with?

Conditions: 2.5 mg · 1 mL · 0.9% sodium chloride. Please show the division. I want to check my own against yours. I would like the general form as well as the…

reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

330 questions
diluent-volume
diluent-volume

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

308 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by Dr_Jonas_Halvorsen 41k · 2.0 years ago
2 votes 2 answers3.3k views
How does semaglutide at 2 mg weekly compare on cost per milligram across routes?

The case in front of me: semaglutide · 2 mg. I want the working, not the result — I need to be able to redo it with different numbers. I care about the precision as…

cost-analysis
cost-analysis

Cost arithmetic done honestly: cost per milligram after dead-space loss, list versus net price, comparing a multi-dose vial to a fixed-dose pen,…

261 questions
vendor-comparison
vendor-comparison

Side-by-side comparison of suppliers on measurable axes - independently confirmed purity and content, lead time, cold-chain handling,…

351 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by coldpack_88 37k · 11 months ago
2 votes 5 answers3.3k views
How do I convert the STEP 3 hazard ratio into an absolute risk reduction?

I have three data points across nine months, which I hope is enough to see a trend. I can do the algebra. I am not confident about the conversion factors. If there is…

cardiovascular
cardiovascular

Cardiovascular outcomes: the SELECT major-adverse-event result, SOUL, SUSTAIN 6 and REWIND, how to convert a hazard ratio into an absolute risk…

111 questions
clinical-trials
clinical-trials

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

913 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by threadlock7 14k · 6 months ago
2 votes5 answers2.1k views
Is rounding to the nearest whole unit an acceptable error?

I have a logging thermometer, a box of insulin syringes and no illusions about my worktop being sterile. I understand the observation; what I do not understand is the…

dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
insulin-syringe
insulin-syringe

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

268 questions
harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

445 questions
asked by ten_mg_vial 16k · 3 months ago
1 vote 5 answers8.9k views
Is 1 mg/mL a sensible working concentration for mazdutide, or should I go lower?

Stated plainly: 1 mg/mL · mazdutide. Both of these get recommended confidently by different people, which suggests neither is obviously right. My constraints are…

diluent-volume
diluent-volume

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

308 questions
reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

330 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by noor_alhassan 15k · 9 months ago
1 vote 5 answers6.5k views
Is 60 mg weekly a defensible maintenance dose for cagrilintide?

Stated plainly: 60 mg · cagrilintide. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but not tight, and my tolerance…

maintenance-dose
maintenance-dose

Staying put: the lowest dose that holds a result, the difference between the maximum studied dose and the maximum useful dose, and what the…

44 questions
clinical-trials
clinical-trials

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

913 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by felix_araya 17k · 4 months ago
1 vote5 answers5.6k views
Is 40 mg weekly a defensible maintenance dose for oral semaglutide?

Concretely: 40 mg · oral semaglutide. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will follow the plan I write down,…

maintenance-dose
maintenance-dose

Staying put: the lowest dose that holds a result, the difference between the maximum studied dose and the maximum useful dose, and what the…

44 questions
clinical-trials
clinical-trials

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

913 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by seamus_brady 17k · 8 months ago
1 vote 4 answers5.2k views
How do I compute the +3 charge state m/z for a peptide of 4731.3 Da?

What I am working with: +3 · 4731.3 Da. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of magnitude and it…

mass-spec
mass-spec

Mass spectrometry for identity confirmation: electrospray ionisation, multiple charge states, monoisotopic versus average mass, deconvolution, and…

38 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

788 questions
asked by tadhg_o_riordan 14k · 6 months ago
1 vote2 answers4.5k views
How do I compute the +5 charge state m/z for a peptide of 3751.0 Da?

Concretely: +5 · 3751.0 Da. I want the working, not the result — I need to be able to redo it with different numbers. I care about the precision as well as the value…

mass-spec
mass-spec

Mass spectrometry for identity confirmation: electrospray ionisation, multiple charge states, monoisotopic versus average mass, deconvolution, and…

38 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

788 questions
asked by k_szabo 45k · 8 months ago
1 vote3 answers3.2k views
Does splitting a 20 mg weekly dose of mazdutide across two administrations change anything?

What I am working with: 20 mg · mazdutide. The empirical answer seems settled. The explanation does not. If the honest answer is that nobody knows, I would rather…

split-dosing
split-dosing

Dividing a weekly dose across more than one administration. Questions here concern the pharmacokinetic rationale, whether the peak-to-trough ratio…

39 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
glp1-mechanism
glp1-mechanism

Receptor-level pharmacology: GLP-1R as a class B GPCR, cAMP and PKA signalling, biased agonism, internalisation and resensitisation, and the…

175 questions
retatrutide
retatrutide

An investigational GLP-1, GIP and glucagon receptor tri-agonist, studied in the TRIUMPH programme. Not approved anywhere. Use this tag for…

14 questions
asked by pk_curve 12k · 7 months ago
1 vote 5 answers2.9k views
Is 10 mg in 2 mL of 0.9% sodium chloride a sensible presentation for mazdutide?

Conditions: 10 mg · 2 mL · 0.9% sodium chloride · mazdutide. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view…

diluent-volume
diluent-volume

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

308 questions
reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

330 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by per_haugen 18k · 9 months ago
1 vote 5 answers2.7k views
Does splitting a 2.5 mg weekly dose of tirzepatide across two administrations change anything?

Concretely: 2.5 mg · tirzepatide. This is one of those things that everyone repeats and nobody derives. This matters practically, not just academically, because it…

split-dosing
split-dosing

Dividing a weekly dose across more than one administration. Questions here concern the pharmacokinetic rationale, whether the peak-to-trough ratio…

39 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
glp1-mechanism
glp1-mechanism

Receptor-level pharmacology: GLP-1R as a class B GPCR, cAMP and PKA signalling, biased agonism, internalisation and resensitisation, and the…

175 questions
asked by Dr_Sara_Kuusela 46k · 4 months ago
1 vote 5 answers2.1k views
Is 2.5 mg weekly a defensible maintenance dose for oral semaglutide?

Conditions: 2.5 mg · oral semaglutide. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view and I would like the…

maintenance-dose
maintenance-dose

Staying put: the lowest dose that holds a result, the difference between the maximum studied dose and the maximum useful dose, and what the…

44 questions
clinical-trials
clinical-trials

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

913 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by Dr_Ilse_Vandenberg 78k · 4 months ago
1 vote0 answers1.2k views
What does SOUL report at the 15 mg dose level?

What I am working with: SOUL · 15 mg. I would like help reading this properly rather than being told what conclusion to reach. I have the full report including the…

clinical-trials
clinical-trials

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

913 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
titration
titration

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

444 questions
asked by eighty_six_hours 16k · 8 months ago
1 vote0 answers819 views
How many units on a 0.5 mL insulin syringe is a 2 mg dose at 4 mg/mL?

Concretely: a 0.5 mL insulin syringe · 2 mg · 4 mg/mL. I want the working, not the result — I need to be able to redo it with different numbers. I care about the…

dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
insulin-syringe
insulin-syringe

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

268 questions
reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

330 questions
asked by pascal_thibault 13k · 6 months ago
1 vote0 answers294 views
Is 2.5 mg/mL a sensible working concentration for a GLP-1 receptor agonist, or should I go lower?

What I am working with: 2.5 mg/mL · a GLP-1 receptor agonist. Both of these get recommended confidently by different people, which suggests neither is obviously…

diluent-volume
diluent-volume

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

308 questions
reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

330 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

811 questions
asked by Dr_Marek_Zielinski 39k · 3 months ago