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dosing-math

Page 2 of 34 · 811 questions tagged dosing-math.

811 questions · sorted by votes · page 2 of 34

39 votes 5 answers20k views
Is 5 mg/mL a sensible working concentration for retatrutide, or should I go lower?

What I have: 5 mg/mL · retatrutide. 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…

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 forty_two_c 43k · 23 months ago
39 votes 5 answers16k views
Is 10 mg/mL a sensible working concentration for tirzepatide, or should I go lower?

Conditions: 10 mg/mL · tirzepatide. I would like the axes of comparison first and the recommendation second. I have tried the first option and it works; the question…

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
subcutaneous
subcutaneous

Subcutaneous administration as a route: absorption kinetics from abdomen versus thigh versus upper arm, tissue depth, and why site rotation…

14 questions
asked by eighty_six_hours 16k · 19 months ago
38 votes 5 answers58k views
Why do two papers on STEP 8 report different headline figures?

This is a question about interpretation, not about whether to act — I will take action questions elsewhere. I want to know whether this is a real physical effect or…

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
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
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…

14 questions
asked by cold_lane 14k · 22 months ago
38 votes 5 answers55k views
Is 5 mg in 3 mL of bacteriostatic water a sensible presentation for liraglutide?

Setup, so nobody has to ask: 5 mg · 3 mL · bacteriostatic water · liraglutide. I would like to set this up properly once, rather than adjust it repeatedly. My budget…

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 void_volume 13k · 22 months ago
38 votes3 answers51k views
Why does my 10 mg vial only give me nine usable draws?

My setup is a refrigerator with a logger and a small work area I wipe down, nothing more. Please show the division. I want to check my own against yours. I would like…

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…

110 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
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
asked by thabo_maseko 20k · 2.3 years ago
38 votes5 answers51k views
Is 5 mg weekly a defensible maintenance dose for cagrilintide?

What I am working with: 5 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…

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 dmitri_savchuk 17k · 2.3 years ago
38 votes 5 answers50k views
How do I get 20 units out of a vial reconstituted to 3.33 mg/mL without guessing?

Concretely: 20 units · 3.33 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 here that…

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 ivo_paunovic 15k · 2.3 years ago
38 votes 3 answers48k views
Is 40 mg in 2 mL of 0.9% sodium chloride a sensible presentation for cagrilintide?

Concretely: 40 mg · 2 mL · 0.9% sodium chloride · cagrilintide. I want to decide this in advance so that I am not deciding it under pressure later. Assume I will…

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 ellis_thorne 17k · 23 months ago
38 votes 5 answers47k views
What does SURMOUNT-OSA report at the 2 mg dose level?

Conditions: SURMOUNT-OSA · 2 mg. I would like to know the limits of what can be inferred from this. What I am trying to avoid is over-reading a single result, which I…

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 lane_transit 42k · 18 months ago
38 votes0 answers45k views
If a semaglutide dose is missed by seven days, does the ladder reset?

Concretely: semaglutide · seven days. I am trying to do this correctly the first time rather than learn it by getting it wrong. I have already made one mistake here…

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…

444 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 leah_ferrers 15k · 2.2 years ago
38 votes5 answers42k views
How many vial-days does a 15 mg vial give at 2.5 mg/mL on a weekly schedule?

The specifics, since they change the answer: 15 mg · 2.5 mg/mL. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used…

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
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
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 syringe_ninety 15k · 19 months ago
38 votes5 answers34k views
What is the arithmetic to convert 10 mg in 0.5 mL into units on a U-100 scale?

Conditions: 10 mg · 0.5 mL. 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…

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
endotoxin
endotoxin

Bacterial endotoxin: LAL and kinetic chromogenic methods, how an endotoxin limit is derived from a dose, why endotoxin survives autoclaving, and…

14 questions
asked by elke_brunner 14k · 2.0 years ago
38 votes 5 answers32k views
If a dulaglutide dose is missed by three days, does the ladder reset?

What I am working with: dulaglutide · three days. Everything I have found on this is either a forum aside or a product page, neither of which I trust. I am…

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…

444 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 olu_babatunde 14k · 2.3 years ago
38 votes 5 answers28k views
How does ecnoglutide at 2 mg weekly compare on cost per milligram across routes?

The case in front of me: ecnoglutide · 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 birk_nordahl 20k · 2.2 years ago
38 votes 5 answers27k views
How many vial-days does a 10 mg vial give at 2 mg/mL on a weekly schedule?

The case in front of me: 10 mg · 2 mg/mL. 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…

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
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
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 two_two_micron 15k · 2.1 years ago
38 votes 5 answers25k views
If I reconstitute a 4 mg vial with 1.5 mL of phosphate-buffered diluent, what concentration do I end up with?

For reference: 4 mg · 1.5 mL · phosphate-buffered diluent. I would rather understand the derivation than memorise the outcome. Two people I asked gave two answers…

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 mass_shift_18 14k · 17 months ago
37 votes 5 answers75k views
Why do two papers on PIONEER-4 report different headline figures?

I have the full paper rather than the abstract, and the supplementary appendix. I understand the observation; what I do not understand is the mechanism behind it. I…

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
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
asked by lane_transit 42k · 2.3 years ago
37 votes 5 answers60k views
How many vial-days does a 8 mg vial give at 4 mg/mL on a weekly schedule?

What I have: 8 mg · 4 mg/mL. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is what I am…

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
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
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 greta_holzmann 15k · 23 months ago
37 votes 4 answers58k views
Is 50 mg in 1 mL of phosphate-buffered diluent a sensible presentation for retatrutide?

The specifics, since they change the answer: 50 mg · 1 mL · phosphate-buffered diluent · retatrutide. I am at the decision point and I would rather think it through…

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 sasha_ferreira 15k · 2.4 years ago
37 votes 5 answers58k views
How does mazdutide at 10 mg weekly compare on cost per milligram across routes?

What I have: mazdutide · 10 mg. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is what I…

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 mg_per_ml 12k · 22 months ago
37 votes 5 answers56k views
Is 4 mg in 1 mL of phosphate-buffered diluent a sensible presentation for orforglipron?

The specifics, since they change the answer: 4 mg · 1 mL · phosphate-buffered diluent · orforglipron. I would like to define my thresholds before I have a result, for…

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 mateo_iglesias 16k · 2.3 years ago
37 votes0 answers51k views
Is 3.33 mg/mL a sensible working concentration for orforglipron, or should I go lower?

Numbers first: 3.33 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…

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 linnea_wahlberg 14k · 2.0 years ago
37 votes5 answers48k views
Is 15 mg weekly a defensible maintenance dose for ecnoglutide?

For reference: 15 mg · ecnoglutide. I am at the decision point and I would rather think it through than improvise. I would rather spend money on measurement than on…

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 low_dead_space 42k · 2.3 years ago
37 votes 5 answers48k views
Why do two papers on SURMOUNT-3 report different headline figures?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. I keep seeing this stated as a fact with no explanation attached,…

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
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
asked by tobias_reint 19k · 19 months ago