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diluent-volume

Page 6 of 13 · 308 questions tagged diluent-volume.

308 questions · sorted by votes · page 6 of 13

21 votes 3 answers28k views
Floaters, fibres, stopper fragments and foam — how do I tell them apart in a reconstituted vial?

Reconstituted a vial yesterday and now there is stuff in it. I would like a systematic way to classify "stuff", because right now my options are ignore it or bin a…

vial-inspection
vial-inspection

What you can learn by looking: cake morphology, meniscus films, fibres versus stopper fragments versus true particulates, clarity after…

66 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
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
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 kofi_mensah 12k · 14 months ago
21 votes0 answers24k views
Can I reconstitute dulaglutide at 20 mg/mL and still measure a small dose accurately?

What I am working with: dulaglutide · 20 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…

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 klara_novotna 16k · 18 months ago
21 votes5 answers21k views
If I reconstitute a 10 mg vial with 2 mL of 0.9% sodium chloride, what concentration do I end up with?

The case in front of me: 10 mg · 2 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…

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 thermal_mass 16k · 14 months ago
21 votes 5 answers13k views
Is 5 mg in 2.5 mL of bacteriostatic water a sensible presentation for liraglutide?

Stated plainly: 5 mg · 2.5 mL · bacteriostatic water · liraglutide. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but…

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 rosa_mendieta 13k · 8 months ago
21 votes5 answers13k views
Is 30 mg in 5 mL of sterile water for injection a sensible presentation for semaglutide?

Numbers first: 30 mg · 5 mL · sterile water for injection · semaglutide. This is a planning question. I know what my options are; I do not know how to weigh them.…

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 a_lindgren 46k · 6 months ago
21 votes5 answers12k views
How do I get 20 units out of a vial reconstituted to 20 mg/mL without guessing?

What I am working with: 20 units · 20 mg/mL. This is a procedural question rather than a theoretical one, and I would like the procedure rather than the theory. What…

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 otto_brenner 19k · 3 months ago
21 votes 2 answers11k views
Is 60 mg in 2.5 mL of bacteriostatic water a sensible presentation for liraglutide?

Stated plainly: 60 mg · 2.5 mL · bacteriostatic water · liraglutide. I am trying to build something sustainable rather than something thorough that I will abandon. I…

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 kirsi_lahtinen 45k · 4 months ago
21 votes 5 answers10k views
Is 60 mg in 0.5 mL of bacteriostatic water a sensible presentation for oral semaglutide?

Setup, so nobody has to ask: 60 mg · 0.5 mL · bacteriostatic water · oral semaglutide. I am trying to build something sustainable rather than something thorough that…

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 dermot_kiely 14k · 9 months ago
21 votes 5 answers9.5k views
Is 2.5 mg in 2 mL of 0.9% sodium chloride a sensible presentation for cagrilintide?

Concretely: 2.5 mg · 2 mL · 0.9% sodium chloride · cagrilintide. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in…

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 coring_risk 17k · 13 months ago
21 votes0 answers5k views
Is 20 mg in 1 mL of bacteriostatic water a sensible presentation for oral semaglutide?

Setup, so nobody has to ask: 20 mg · 1 mL · bacteriostatic water · oral semaglutide. I am trying to build something sustainable rather than something thorough that I…

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 kelvin_lam 11k · 2 months ago
21 votes3 answers4.8k views
Is 2 mg in 5 mL of sterile water for injection a sensible presentation for ecnoglutide?

Details up front: 2 mg · 5 mL · sterile water for injection · ecnoglutide. This is a planning question. I know what my options are; I do not know how to weigh them.…

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_units 14k · 11 days ago
21 votes 2 answers2.3k views
Is 40 mg in 5 mL of 0.9% sodium chloride a sensible presentation for mazdutide?

Concretely: 40 mg · 5 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 tamsin_wray 13k · 44 days ago
20 votes4 answers44k views
Is 2.5 mg/mL a sensible working concentration for liraglutide, or should I go lower?

Conditions: 2.5 mg/mL · liraglutide. 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
asked by ivo_paunovic 15k · 2.3 years ago
20 votes 5 answers31k views
If I reconstitute a 60 mg vial with 5 mL of bacteriostatic water, what concentration do I end up with?

Stated plainly: 60 mg · 5 mL · bacteriostatic water. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of…

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 swab_and_wait 15k · 19 months ago
20 votes5 answers30k views
Is 4 mg/mL a sensible working concentration for liraglutide, or should I go lower?

Conditions: 4 mg/mL · liraglutide. These are treated as interchangeable and I do not think they are. If both are acceptable I would like to know that, so I can stop…

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 kirsi_lahtinen 45k · 19 months ago
20 votes0 answers24k views
Is 2.5 mg in 3 mL of 0.9% sodium chloride a sensible presentation for cagrilintide?

The case in front of me: 2.5 mg · 3 mL · 0.9% sodium chloride · cagrilintide. The failure mode I am trying to avoid is making this decision emotionally. I have twelve…

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 syringe_ninety 15k · 2.2 years ago
20 votes 5 answers15k views
If I reconstitute a 15 mg vial with 0.5 mL of phosphate-buffered diluent, what concentration do I end up with?

For reference: 15 mg · 0.5 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 RP_C18 85k · 8 months ago
20 votes 5 answers15k views
Can I reconstitute semaglutide at 2 mg/mL and still measure a small dose accurately?

Conditions: semaglutide · 2 mg/mL. 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…

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 ellis_thorne 17k · 5 months ago
20 votes 5 answers14k views
How many vial-days does a 10 mg vial give at 5 mg/mL on a weekly schedule?

Concretely: 10 mg · 5 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 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
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 rhian_prydderch 44k · 9 months ago
20 votes0 answers9.3k views
How many vial-days does a 5 mg vial give at 3.33 mg/mL on a weekly schedule?

Stated plainly: 5 mg · 3.33 mg/mL. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order of magnitude and it seems…

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 sample_id 17k · 10 months ago
20 votes 1 answer7.7k views
How many vial-days does a 2 mg vial give at 6.67 mg/mL on a weekly schedule?

What I have: 2 mg · 6.67 mg/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…

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 tenth_of_a_unit 40k · 3 months ago
20 votes0 answers5.9k views
How many vial-days does a 4 mg vial give at 10 mg/mL on a weekly schedule?

For reference: 4 mg · 10 mg/mL. I would rather understand the derivation than memorise the outcome. Two people I asked gave two answers that differ by a factor of…

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 thermal_mass 16k · 14 months ago
20 votes 5 answers4.5k views
How do I get 25 units out of a vial reconstituted to 2.5 mg/mL without guessing?

Numbers first: 25 units · 2.5 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 low_dead_space 42k · 5 months ago
20 votes 5 answers3.1k views
If I reconstitute a 60 mg vial with 2 mL of bacteriostatic water, what concentration do I end up with?

What I am working with: 60 mg · 2 mL · bacteriostatic water. The units are where I keep going wrong, so please be explicit about them. I have sanity-checked the order…

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 colm_dunphy 16k · 18 days ago