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dosing-math

Page 5 of 34 · 811 questions tagged dosing-math.

811 questions · sorted by votes · page 5 of 34

33 votes5 answers34k views
How do I convert the PIONEER-1 hazard ratio into an absolute risk reduction?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. Please show the division. I want to check my own against yours. I…

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 sunniva_dahl 11k · 16 months ago
33 votes0 answers33k views
Why do two papers on PIONEER-1 report different headline figures?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. I want to know whether this is a real physical effect or an…

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 noor_alhassan 15k · 19 months ago
33 votes0 answers25k views
Why do two papers on SURMOUNT-OSA report different headline figures?

This is a question about interpretation, not about whether to act — I will take action questions elsewhere. I keep seeing this stated as a fact with no explanation…

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 juan_esquivel 14k · 19 months ago
33 votes5 answers24k views
How many units on a low-dead-space syringe is a 8 mg dose at 1 mg/mL?

Conditions: a low-dead-space syringe · 8 mg · 1 mg/mL. Please show the division. I want to check my own against yours. I would like the general form as well as 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 pierce_count 15k · 13 months ago
33 votes 5 answers23k views
How do I convert the TRIUMPH-3 hazard ratio into an absolute risk reduction?

My laboratory results are from the same laboratory each time, drawn fasting, which I gather matters. I want the working, not the result — I need to be able to redo it…

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
pcos
pcos

Polycystic ovary syndrome: insulin resistance as the shared mechanism, ovulatory and menstrual outcomes reported on treatment, androgen changes,…

14 questions
asked by low_dead_space 42k · 17 months ago
32 votes5 answers59k views
Oral versus injectable — is the comparison even meaningful?

I am asking mechanistically rather than practically — I want the model, not the protocol. I want to know what the trade-off actually is rather than which option is…

oral-glp1
oral-glp1

Oral routes for GLP-1 receptor agonism: peptide formulations rescued by absorption enhancers such as SNAC, and true small molecules that need no…

14 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
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…

14 questions
asked by lyoph_cake 95k · 2.2 years ago
32 votes 2 answers49k views
What is the arithmetic to convert 8 mg in 5 mL into units on a U-100 scale?

Numbers first: 8 mg · 5 mL. I can do the algebra. I am not confident about the conversion factors. If there is a standard way to lay this out, I would rather learn…

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 low_dead_space 42k · 23 months ago
32 votes5 answers46k views
Does splitting a 2 mg weekly dose of orforglipron across two administrations change anything?

What I have: 2 mg · orforglipron. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware this may have a boring answer. I would still…

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_Malik_Osei 37k · 20 months ago
32 votes 5 answers46k views
How many units on a U-100 insulin syringe is a 60 mg dose at 5 mg/mL?

The particulars: a U-100 insulin syringe · 60 mg · 5 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…

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 marta_szymanska 17k · 2.3 years ago
32 votes 5 answers44k views
How do I get 10 units out of a vial reconstituted to 1 mg/mL without guessing?

Numbers first: 10 units · 1 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…

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 valentina_rossi 16k · 23 months ago
32 votes 4 answers42k views
How does semaglutide at 8 mg weekly compare on cost per milligram across routes?

The case in front of me: semaglutide · 8 mg. Please show the division. I want to check my own against yours. I would like the general form as well as the specific…

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 n_takahashi 36k · 18 months ago
32 votes 3 answers41k views
Why is every label titration step four weeks, and what actually sets that interval?

I have been reading the prescribing information for several agents in this class side by side and something bothers me. The ladders themselves are completely…

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
dose-escalation
dose-escalation

The decision to move up a step: what evidence supports a four-week interval, what happens when you compress it, and how trial protocols handled…

88 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
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…

162 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 b_delacroix 48k · 2.1 years ago
32 votes 5 answers37k views
Is 20 mg/mL a sensible working concentration for retatrutide, or should I go lower?

What I have: 20 mg/mL · retatrutide. I have used one of these for a while and I am considering switching, which requires a reason. What I care about is…

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 nominal_ten 14k · 17 months ago
32 votes 5 answers36k views
How many weeks to steady state for tirzepatide on a weekly schedule?

I am asking mechanistically rather than practically — I want the model, not the protocol. I would rather understand the derivation than memorise the outcome. Two…

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
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
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…

14 questions
asked by cal_hennessy 14k · 13 months ago
32 votes 2 answers34k views
Is 30 mg weekly a defensible maintenance dose for retatrutide?

What I have: 30 mg · retatrutide. 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 matters.…

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 claudia_ferrante 46k · 14 months ago
32 votes5 answers31k views
What is a treatment-policy estimand and why does it change the number?

I am reading the trial table rather than the press release, which is why the numbers differ. I can predict the outcome but I cannot explain it, which means I will get…

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
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…

14 questions
asked by k_szabo 45k · 12 months ago
32 votes 5 answers31k views
How do I get 25 units out of a vial reconstituted to 6.67 mg/mL without guessing?

The particulars: 25 units · 6.67 mg/mL. I want a method I can write down and repeat, not a rule of thumb. I would rather over-engineer this than discover a problem…

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 orla_sheridan 14k · 20 months ago
32 votes 3 answers26k views
How do I get 4 units out of a vial reconstituted to 20 mg/mL without guessing?

Setup, so nobody has to ask: 4 units · 20 mg/mL. This is a procedural question rather than a theoretical one, and I would like the procedure rather than the theory.…

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 zeynep_arslan 20k · 12 months ago
32 votes0 answers25k views
How many units on a U-40 insulin syringe is a 8 mg dose at 6.67 mg/mL?

Concretely: a U-40 insulin syringe · 8 mg · 6.67 mg/mL. Please show the division. I want to check my own against yours. I would like the general form as well as 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 net_peptide 16k · 18 months ago
32 votes5 answers24k views
If I reconstitute a 4 mg vial with 3 mL of phosphate-buffered diluent, what concentration do I end up with?

The specifics, since they change the answer: 4 mg · 3 mL · phosphate-buffered diluent. I would rather understand the derivation than memorise the outcome. Two people…

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 sasha_ferreira 15k · 10 months ago
32 votes5 answers19k views
Can I reconstitute ecnoglutide at 5 mg/mL and still measure a small dose accurately?

The case in front of me: ecnoglutide · 5 mg/mL. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in view and I would…

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
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
asked by leah_ferrers 15k · 16 months ago
32 votes 5 answers17k views
What is the failure mode nobody warns new people about?

The lane and the lead time matter as much as the material for what I am doing. I understand the observation; what I do not understand is the mechanism behind it. I…

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
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
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…

122 questions
asked by seamus_brady 17k · 14 months ago
32 votes 3 answers15k views
My eGFR fell from 85 to 74 eight weeks in. Is that the expected dip or actual injury?

Male, 52, baseline creatinine 1.05 mg/dL with a reported eGFR of 85. Eight weeks into semaglutide, after two escalations, creatinine 1.18 mg/dL and eGFR 74. No…

kidney-function
kidney-function

eGFR, creatinine, cystatin C and albuminuria: the acute haemodynamic dip that is not injury, the renal outcome data from the FLOW programme, and…

100 questions
bloodwork
bloodwork

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

284 questions
hydration
hydration

Fluid intake when thirst and intake cues are both blunted: how much of the early scale drop is fluid, how dehydration confounds a renal panel, and…

14 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_Lena_Ostrowska 42k · 21 months ago
32 votes0 answers11k views
What does STEP 8 report at the 10 mg dose level?

Numbers first: STEP 8 · 10 mg. This is presented as though it settles something, and I am not convinced it does. I have two documents that appear to disagree, which…

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
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 oona_kekkonen 16k · 19 months ago