PeptideStack
5.2kquestions
20kanswers
220users

dosing-math

Page 28 of 32 · 764 questions tagged dosing-math.

764 questions · sorted by votes · page 28 of 32

7 votes 5 answers13k views
Is 0.25 mg weekly a defensible maintenance dose for liraglutide?

The case in front of me: 0.25 mg · liraglutide. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view and I would…

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…

54 questions
clinical-trials
clinical-trials

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

745 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…

764 questions
liraglutide
liraglutide

A once-daily GLP-1 receptor agonist and the compound that established the class. Still relevant for its shorter half-life, its paediatric and…

235 questions
asked by forty_units 16k · 17 months ago
7 votes5 answers12k views
What does STEP 5 report at the 1 mg dose level?

Stated plainly: STEP 5 · 1 mg. I would like help reading this properly rather than being told what conclusion to reach. I have the full report including the method…

clinical-trials
clinical-trials

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

745 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…

764 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…

456 questions
asked by eoin_mcgarry 18k · 16 months ago
7 votes 2 answers10k views
Is 10 mg in 1 mL of 0.9% sodium chloride a sensible presentation for cagrilintide?

The case in front of me: 10 mg · 1 mL · 0.9% sodium chloride · cagrilintide. I want to decide this in advance so that I am not deciding it under pressure later.…

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…

295 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,…

313 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…

764 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by juan_esquivel 14k · 16 months ago
7 votes3 answers10k views
Can I reconstitute cagrilintide at 6.67 mg/mL and still measure a small dose accurately?

Numbers first: cagrilintide · 6.67 mg/mL. This is a planning question. I know what my options are; I do not know how to weigh them. What I want is the minimum viable…

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…

295 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…

244 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…

764 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by rune_thoresen 16k · 9 months ago
7 votes 4 answers9.9k views
Is 2 mg/mL a sensible working concentration for orforglipron, or should I go lower?

Numbers first: 2 mg/mL · orforglipron. I want to know what the trade-off actually is rather than which option is fashionable. I would rather have a defensible reason…

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…

295 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,…

313 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…

764 questions
orforglipron
orforglipron

A non-peptide, orally bioavailable small-molecule GLP-1 receptor agonist studied in the ATTAIN programme. It is not a peptide, which changes…

219 questions
asked by nils_karlberg 9.4k · 9 months ago
7 votes 5 answers8.8k views
How many units on a 1 mL luer-lock syringe is a 2.5 mg dose at 4 mg/mL?

Numbers first: a 1 mL luer-lock syringe · 2.5 mg · 4 mg/mL. I can do the algebra. I am not confident about the conversion factors. If there is a standard way to lay…

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…

764 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…

244 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,…

313 questions
asked by b_delacroix 43k · 4 months ago
7 votes0 answers8.8k views
Does splitting a 7.5 mg weekly dose of mazdutide across two administrations change anything?

Setup, so nobody has to ask: 7.5 mg · mazdutide. The empirical answer seems settled. The explanation does not. If the honest answer is that nobody knows, I would…

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…

44 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…

764 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…

132 questions
mazdutide
mazdutide

A GLP-1 and glucagon receptor dual agonist developed primarily in China, with a distinct dose range and a fast-moving publication record.…

237 questions
asked by bridget_nyathi 12k · 18 months ago
7 votes 3 answers6.2k views
How do I get 20 units out of a vial reconstituted to 5 mg/mL without guessing?

The case in front of me: 20 units · 5 mg/mL. I am trying to do this correctly the first time rather than learn it by getting it wrong. I have already made one mistake…

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…

244 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…

764 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…

295 questions
asked by rae_oyelowo 17k · 6 months ago
7 votes 3 answers5.1k views
What does STEP 4 report at the 1 mg dose level?

Setup, so nobody has to ask: STEP 4 · 1 mg. I would like help reading this properly rather than being told what conclusion to reach. I have the full report including…

clinical-trials
clinical-trials

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

745 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…

764 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…

456 questions
asked by grainne_ahearn 50k · 18 months ago
7 votes3 answers5.1k views
How many units on a U-100 insulin syringe is a 5 mg dose at 5 mg/mL?

The specifics, since they change the answer: a U-100 insulin syringe · 5 mg · 5 mg/mL. I would rather understand the derivation than memorise the outcome. Two people…

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…

764 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…

244 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,…

313 questions
asked by sample_id 17k · 10 months ago
7 votes 4 answers4.5k views
Can I reconstitute retatrutide at 3.33 mg/mL and still measure a small dose accurately?

Stated plainly: retatrutide · 3.33 mg/mL. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but not tight, and my…

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…

295 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…

244 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…

764 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…

251 questions
asked by noor_alhassan 11k · 2 months ago
7 votes0 answers4.3k views
If I reconstitute a 30 mg vial with 5 mL of sterile water for injection, what concentration do I end up with?

What I have: 30 mg · 5 mL · sterile water for injection. This should be a straightforward calculation and I keep getting two different answers. The numbers are…

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,…

313 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…

295 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…

764 questions
sterile-water
sterile-water

Preservative-free sterile water for injection: appropriate for a single-withdrawal presentation, a poor choice for anything you intend to open…

35 questions
asked by retest_please 9.7k · 9 months ago
7 votes5 answers4.2k views
What is the arithmetic to convert 20 mg in 2.5 mL into units on a U-100 scale?

What I am working with: 20 mg · 2.5 mL. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so far, for 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…

764 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…

244 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,…

313 questions
asked by swab_and_wait 13k · 2 months ago
7 votes 5 answers4.2k views
What is the most common avoidable mistake in reconstitution?

This is the third vial from the same lot, so I can compare against two known-good ones. I would like the mechanism, because I want to be able to reason about 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,…

313 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…

764 questions
harm-reduction
harm-reduction

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

472 questions
asked by ekaterina_volk 21k · 5 days ago
7 votes0 answers3.2k views
Why do two papers on FLOW report different headline figures?

I have the full paper rather than the abstract, and the supplementary appendix. I would like the mechanism, because I want to be able to reason about the cases nobody…

clinical-trials
clinical-trials

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

745 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…

764 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…

470 questions
asked by v_ramaswamy 68k · 3 months ago
7 votes 4 answers2.3k views
What does ATTAIN-1 report at the 12 mg dose level?

Stated plainly: ATTAIN-1 · 12 mg. I have read the primary source rather than the summary, which has left me with more questions. I understand the headline. I do not…

clinical-trials
clinical-trials

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

745 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…

764 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…

456 questions
asked by anders_vestby 8.5k · 2 months ago
7 votes 2 answers1.2k views
Is 2.4 mg weekly a defensible maintenance dose for liraglutide?

Concretely: 2.4 mg · liraglutide. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view and I would like the plan to…

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…

54 questions
clinical-trials
clinical-trials

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

745 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…

764 questions
liraglutide
liraglutide

A once-daily GLP-1 receptor agonist and the compound that established the class. Still relevant for its shorter half-life, its paediatric and…

235 questions
asked by colm_dunphy 8.2k · 28 days ago
6 votes5 answers23k views
What is the dead-space loss per draw with a 29G needle at 10 mg/mL?

For reference: a 29G needle · 10 mg/mL. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used an online calculator…

dead-space
dead-space

The volume trapped in the syringe hub and needle after the plunger bottoms out. It is small in absolute terms and large as a fraction of a small…

117 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…

244 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…

764 questions
asked by Dr_Elias_Weiss 25k · 23 months ago
6 votes 4 answers18k views
Does splitting a 5 mg weekly dose of dulaglutide across two administrations change anything?

Details up front: 5 mg · dulaglutide. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would like to know how…

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…

44 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…

764 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…

132 questions
dulaglutide
dulaglutide

A once-weekly GLP-1 receptor agonist built on an Fc fusion rather than fatty-acid acylation. Use this tag for questions about the fusion-protein…

200 questions
asked by t_oyelaran 79k · 2.3 years ago
6 votes 5 answers17k views
Is there a pharmacokinetic case for moving a GLP-1 receptor agonist injection day by five days?

What I have: a GLP-1 receptor agonist · five days. I can predict the outcome but I cannot explain it, which means I will get the next case wrong. I would like to know…

missed-dose
missed-dose

What the label instructions for a missed weekly dose are, why they differ between agents, and what the pharmacokinetics say about drift in an…

41 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…

132 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…

764 questions
asked by dmitri_savchuk 27k · 15 months ago
6 votes 5 answers13k views
If I reconstitute an 8 mg vial with 5 mL of sterile water for injection, what concentration do I end up with?

What I have: 8 mg · 5 mL · sterile water for injection. This should be a straightforward calculation and I keep getting two different answers. The numbers are…

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,…

313 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…

295 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…

764 questions
sterile-water
sterile-water

Preservative-free sterile water for injection: appropriate for a single-withdrawal presentation, a poor choice for anything you intend to open…

35 questions
asked by marta_szymanska 10k · 15 months ago
6 votes 5 answers12k views
Why do two papers on STEP 1 report different headline figures?

I have the full paper rather than the abstract, and the supplementary appendix. I can predict the outcome but I cannot explain it, which means I will get the next…

clinical-trials
clinical-trials

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

745 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…

764 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…

470 questions
asked by tri_gly_ala 24k · 22 months ago
6 votes 5 answers12k views
How does liraglutide at 1.7 mg weekly compare on cost per milligram across routes?

The particulars: liraglutide · 1.7 mg. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used an online calculator…

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,…

260 questions
vendor-comparison
vendor-comparison

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

388 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…

764 questions
liraglutide
liraglutide

A once-daily GLP-1 receptor agonist and the compound that established the class. Still relevant for its shorter half-life, its paediatric and…

235 questions
asked by rukhsana_iqbal 17k · 17 months ago
6 votes5 answers11k views
If an ecnoglutide dose is missed by seven days, does the ladder reset?

Setup, so nobody has to ask: ecnoglutide · seven days. I am trying to do this correctly the first time rather than learn it by getting it wrong. I have already made…

missed-dose
missed-dose

What the label instructions for a missed weekly dose are, why they differ between agents, and what the pharmacokinetics say about drift in an…

41 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…

456 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…

764 questions
ecnoglutide
ecnoglutide

A long-acting GLP-1 receptor agonist with a cAMP-biased signalling profile. A niche tag, mostly used for mechanism questions about biased agonism…

223 questions
asked by samir_bennani 15k · 12 months ago