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reconstitution

Page 3 of 14 · 330 questions tagged reconstitution.

330 questions · sorted by votes · page 3 of 14

29 votes0 answers42k views
Is there any reason to reconstitute at 5 mg/mL rather than 2 mg/mL?

I have photographs before and after reconstitution if the visual detail matters. I would like the axes of comparison first and the recommendation second. I have tried…

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 priya_menon 11k · 2.3 years ago
29 votes 3 answers33k views
Is freezing a reconstituted peptide solution ever acceptable, and what exactly does an ice crystal do to it?

Every label on an approved incretin product says do not freeze, and discard if frozen. I would like to know what that instruction is protecting against, because if I…

freeze-thaw
freeze-thaw

What repeated freezing does to a peptide in solution: ice-crystal shear at the growing front, freeze-concentration of solutes, pH shifts as buffer…

55 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 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
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

646 questions
asked by rosa_mendieta 13k · 21 months ago
29 votes5 answers30k views
How many units on a 0.5 mL insulin syringe is a 2 mg dose at 10 mg/mL?

Conditions: a 0.5 mL insulin syringe · 2 mg · 10 mg/mL. I want the working, not the result — I need to be able to redo it with different numbers. I care about 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 bea_forsberg 14k · 2.2 years ago
29 votes 4 answers13k views
Is 5 mg in 1.5 mL of bacteriostatic water a sensible presentation for liraglutide?

Setup, so nobody has to ask: 5 mg · 1.5 mL · bacteriostatic water · liraglutide. I would like to set this up properly once, rather than adjust it repeatedly. 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
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 eighty_six_hours 16k · 15 months ago
29 votes 5 answers8k views
Is 20 mg/mL a sensible working concentration for ecnoglutide, or should I go lower?

The specifics, since they change the answer: 20 mg/mL · ecnoglutide. I am trying to choose between two options that are usually discussed as though only one exists. 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 Dr_Signe_Baldursdottir 46k · 8 months ago
28 votes 5 answers41k views
Is 8 mg/mL a sensible working concentration for retatrutide, or should I go lower?

What I have: 8 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 thermal_mass 16k · 16 months ago
28 votes5 answers37k views
What is the arithmetic to convert 30 mg in 5 mL into units on a U-100 scale?

Details up front: 30 mg · 5 mL. This should be a straightforward calculation and I keep getting two different answers. The numbers are arbitrary; the method is what 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…

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 void_volume 13k · 22 months ago
28 votes 5 answers24k views
How many units on a 0.3 mL insulin syringe is a 20 mg dose at 3.33 mg/mL?

For reference: a 0.3 mL insulin syringe · 20 mg · 3.33 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 hana_petrikova 19k · 21 months ago
28 votes5 answers20k views
How many units on a U-100 insulin syringe is a 10 mg dose at 8 mg/mL?

Details up front: a U-100 insulin syringe · 10 mg · 8 mg/mL. This should be a straightforward calculation and I keep getting two different answers. The numbers are…

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 tabular_nums 47k · 7 months ago
28 votes 5 answers14k views
Is 20 mg in 2 mL of bacteriostatic water a sensible presentation for liraglutide?

Setup, so nobody has to ask: 20 mg · 2 mL · bacteriostatic water · liraglutide. I am trying to build something sustainable rather than something thorough that 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 nadia_kowalczyk 14k · 16 months ago
28 votes 5 answers13k views
How many units on a U-40 insulin syringe is a 2 mg dose at 1 mg/mL?

The case in front of me: a U-40 insulin syringe · 2 mg · 1 mg/mL. Please show the division. I want to check my own against yours. I would like the general form as…

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 · 8 months ago
28 votes 5 answers13k views
Does reconstituting tirzepatide with bacteriostatic water change anything I should know about?

The particulars: tirzepatide · bacteriostatic water. I would like the mechanism, because I want to be able to reason about the cases nobody has written about. I have…

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
bacteriostatic-water
bacteriostatic-water

Water for injection containing roughly 0.9 per cent benzyl alcohol as a bacteriostatic agent. It suppresses growth in a multiple-withdrawal vial;…

112 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

832 questions
asked by jo_vandeberg 19k · 16 months ago
28 votes5 answers12k views
Is 60 mg in 3 mL of bacteriostatic water a sensible presentation for tirzepatide?

Setup, so nobody has to ask: 60 mg · 3 mL · bacteriostatic water · tirzepatide. 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 sample_id 17k · 16 months ago
28 votes5 answers8.3k views
How many units on a U-100 insulin syringe is a 20 mg dose at 2 mg/mL?

For reference: a U-100 insulin syringe · 20 mg · 2 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 · 8 months ago
28 votes 5 answers7.3k views
Is 60 mg in 2 mL of bacteriostatic water a sensible presentation for tirzepatide?

Setup, so nobody has to ask: 60 mg · 2 mL · bacteriostatic water · tirzepatide. I am trying to build something sustainable rather than something thorough that 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 zainab_mustafa 16k · 7 months ago
27 votes 5 answers57k views
Is 10 mg/mL a sensible working concentration for cagrilintide, or should I go lower?

Setup, so nobody has to ask: 10 mg/mL · cagrilintide. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume I can obtain…

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 dead_volume 49k · 2.2 years ago
27 votes 3 answers43k views
How many units on a U-40 insulin syringe is a 50 mg dose at 2.5 mg/mL?

Setup, so nobody has to ask: a U-40 insulin syringe · 50 mg · 2.5 mg/mL. The units are where I keep going wrong, so please be explicit about them. I have…

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 nkem_obiora 46k · 22 months ago
27 votes 5 answers39k views
Is 8 mg in 2 mL of sterile water for injection a sensible presentation for survodutide?

What I have: 8 mg · 2 mL · sterile water for injection · survodutide. This is a planning question. I know what my options are; I do not know how to weigh them. What 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 klara_novotna 16k · 18 months ago
27 votes 5 answers37k views
Is 40 mg in 0.5 mL of 0.9% sodium chloride a sensible presentation for a GLP-1 receptor agonist?

Concretely: 40 mg · 0.5 mL · 0.9% sodium chloride · a GLP-1 receptor agonist. 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 mateo_iglesias 16k · 23 months ago
27 votes 5 answers33k views
What is the arithmetic to convert 2.5 mg in 2 mL into units on a U-100 scale?

Conditions: 2.5 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…

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 ravenna_pace 13k · 2.1 years ago
27 votes 5 answers29k views
How do I convert a 2.5 mg/mL concentration to units on a U-100 syringe?

This is the third vial from the same lot, so I can compare against two known-good ones. I would like the arithmetic checked rather than the conclusion asserted. 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…

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 ten_mg_vial 16k · 18 months ago
27 votes 5 answers23k views
How many units on a 0.5 mL insulin syringe is a 8 mg dose at 4 mg/mL?

Conditions: a 0.5 mL insulin syringe · 8 mg · 4 mg/mL. I want the working, not the result — I need to be able to redo it with different numbers. I care about 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 tobias_maartens 94k · 2.2 years ago
27 votes 3 answers16k views
How many units on a U-100 insulin syringe is a 60 mg dose at 20 mg/mL?

The specifics, since they change the answer: a U-100 insulin syringe · 60 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…

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 eoin_mcgarry 16k · 13 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…

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 a_lindgren 46k · 10 months ago