Using the Peptide Calculator: A Worked Example

Say you have a 10 mg vial and you want a 2 mg dose. You add 3 mL of bacteriostatic water.

Step by step

• Concentration = 10 mg ÷ 3 mL = 3.33 mg/mL.
• Volume for a 2 mg dose = 2 ÷ 3.33 = 0.6 mL.
• On a U-100 insulin syringe, 1 mL = 100 units, so 0.6 mL = 60 units.

Pull the plunger to the 60 mark. Our Peptide Calculator does this for every common vial size and shows it on a syringe diagram so there is no arithmetic to get wrong.