Mixing and storage

Add 2 mL of bacteriostatic water to a 5 mg vial, which gives 2.5 mg in each mL, so 100 mcg is 4 units and 250 mcg is 10 units on an insulin syringe. For a 15 mg vial, add 6 mL for the same strength. Swirl, never shake. Keep powder cool and dark, and keep mixed vials in the fridge and use them within 28 days.