PeptideStack
5.2kquestions
20kanswers
220users

dosing-math

Page 9 of 32 · 764 questions tagged dosing-math.

764 questions · sorted by votes · page 9 of 32

27 votes0 answers18k views
Is 15 mg weekly a defensible maintenance dose for tirzepatide?

Conditions: 15 mg · tirzepatide. 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
tirzepatide
tirzepatide

A dual GIP and GLP-1 receptor agonist. Questions here cover the SURPASS and SURMOUNT programmes, the practical differences from a pure GLP-1…

370 questions
asked by ines_delacruz 16k · 2.0 years ago
27 votes5 answers16k views
Why does a low-dead-space syringe read differently from the volume I thought I drew at 3.33 mg/mL?

Stated plainly: a low-dead-space syringe · 3.33 mg/mL. I noticed this today and I have not touched anything since, in case the state is diagnostic. I have not…

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
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
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 assay_blank 45k · 19 months ago
27 votes 3 answers16k views
How many units on a U-100 insulin syringe is a 10 mg dose at 20 mg/mL?

The specifics, since they change the answer: a U-100 insulin syringe · 10 mg · 20 mg/mL. I would rather understand the derivation than memorise the outcome. Two…

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 eoin_mcgarry 18k · 13 months ago
27 votes 5 answers14k views
What does SUSTAIN-6 report at the 2.4 mg dose level?

Setup, so nobody has to ask: SUSTAIN-6 · 2.4 mg. I have read the primary source rather than the summary, which has left me with more questions. I understand the…

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 Dr_Fatima_Belkacem 18k · 16 months ago
27 votes 3 answers9.9k views
How many draws do I need before a lab trend means anything? My ALT went 24 to 41

Baseline ALT was 24 U/L. Fourteen weeks into semaglutide it came back at 41 U/L, still inside the lab's quoted range of 0 to 50 but a 71% rise from where I started. I…

bloodwork
bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

296 questions
liver-enzymes
liver-enzymes

ALT, AST, GGT and ALP: what they do and do not indicate about hepatic fat, why enzymes are a poor surrogate for histology, and where non-invasive…

91 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_Signe_Baldursdottir 29k · 14 months ago
27 votes0 answers9.5k views
What is the arithmetic to convert 2.5 mg in 0.5 mL into units on a U-100 scale?

Conditions: 2.5 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…

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 a_lindgren 58k · 10 months ago
27 votes 5 answers6.7k views
Is 15 mg in 2 mL of phosphate-buffered diluent a sensible presentation for orforglipron?

The particulars: 15 mg · 2 mL · phosphate-buffered diluent · orforglipron. I would like to define my thresholds before I have a result, for obvious reasons. I want a…

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 imani_dube 8.9k · 6 months ago
27 votes0 answers4.3k views
Is 0.5 mg weekly a defensible maintenance dose for ecnoglutide?

The particulars: 0.5 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…

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
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 lucia_marchetti 19k · 6 months ago
26 votes5 answers51k views
What is the arithmetic to convert 15 mg in 2.5 mL into units on a U-100 scale?

The particulars: 15 mg · 2.5 mL. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used an online calculator because I…

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 marta_szymanska 10k · 23 months ago
26 votes5 answers47k views
How do I get 10 units out of a vial reconstituted to 4 mg/mL without guessing?

For reference: 10 units · 4 mg/mL. I have read the obvious sources and they disagree with each other, so I would rather ask people who have actually done this. I have…

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 ines_delacruz 16k · 2.3 years ago
26 votes5 answers45k views
What is the arithmetic to convert 30 mg in 2 mL into units on a U-100 scale?

What I have: 30 mg · 2 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…

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 juan_esquivel 14k · 22 months ago
26 votes5 answers28k views
What does TRIUMPH-3 report at the 8 mg dose level?

Conditions: TRIUMPH-3 · 8 mg. The figures are clear enough; the question is what they mean and what they do not. I can supply the numbers if the specifics change the…

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 tamsin_wray 9.9k · 15 months ago
26 votes 3 answers25k views
What does splitting a weekly dose actually cost in vial entries and compounded measurement error?

Most discussion of splitting a weekly dose treats the costs as vague — "more injections", "more chances for contamination". I would like the costs quantified, because…

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
sterility
sterility

Sterility as a test result rather than an adjective. Covers what a sterility test actually measures, why "sterile filtered" on a document is close…

142 questions
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
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
asked by orla_sheridan 18k · 13 months ago
26 votes5 answers25k views
How do I convert the STEP 2 hazard ratio into an absolute risk reduction?

I have the full paper rather than the abstract, and the supplementary appendix. I would rather understand the derivation than memorise the outcome. Two people I asked…

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…

68 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
asked by teodora_ilic 17k · 14 months ago
26 votes 5 answers25k views
Why do two papers on SOUL 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 m_haraldsen 21k · 9 months ago
26 votes 5 answers22k views
How many units on a U-40 insulin syringe is a 4 mg dose at 10 mg/mL?

Setup, so nobody has to ask: a U-40 insulin syringe · 4 mg · 10 mg/mL. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked…

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 gel_pack_warm 13k · 8 months ago
26 votes5 answers21k views
How many units on a U-100 insulin syringe is a 2.5 mg dose at 2.5 mg/mL?

Details up front: a U-100 insulin syringe · 2.5 mg · 2.5 mg/mL. I can do the algebra. I am not confident about the conversion factors. If there is a standard way to…

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 fresh_bac 9.7k · 6 months ago
26 votes 2 answers21k views
How do I get 10 units out of a vial reconstituted to 10 mg/mL without guessing?

What I have: 10 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 and…

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 anja_hellstrom 13k · 17 months ago
26 votes0 answers18k views
How many units on a U-100 insulin syringe is a 5 mg dose at 10 mg/mL?

The particulars: a U-100 insulin syringe · 5 mg · 10 mg/mL. I would like the arithmetic checked rather than the conclusion asserted. I have deliberately not used an…

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 mira_sundqvist 7.1k · 23 months ago
26 votes 5 answers18k views
What is the arithmetic to convert 10 mg in 2 mL into units on a U-100 scale?

Conditions: 10 mg · 2 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…

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 coring_risk 27k · 9 months ago
26 votes5 answers17k views
What is the arithmetic to convert 30 mg in 1.5 mL into units on a U-100 scale?

Details up front: 30 mg · 1.5 mL. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is what…

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_stopper 8.8k · 7 months ago
26 votes 5 answers15k views
Is 5 mg/mL a sensible working concentration for survodutide, or should I go lower?

The particulars: 5 mg/mL · survodutide. The comparison I want does not seem to exist anywhere in a form I can evaluate. I have read the arguments for each and they do…

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
survodutide
survodutide

A GLP-1 and glucagon receptor dual agonist with a substantial published MASH dataset. Use this tag for its hepatic endpoints, its dose ladder, and…

225 questions
asked by bac_or_bust 33k · 20 months ago
26 votes 4 answers12k views
Can I reconstitute liraglutide at 6.67 mg/mL and still measure a small dose accurately?

The particulars: liraglutide · 6.67 mg/mL. I would like to define my thresholds before I have a result, for obvious reasons. I want a plan with explicit stopping…

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
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 sian_llewellyn 65k · 6 months ago
26 votes 2 answers9.2k views
Why do two papers on TRIUMPH-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…

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 a_lindgren 58k · 5 months ago