Calculator
Enter how much peptide is in the vial, how much bacteriostatic water is added, and the amount you want to measure. The calculator returns concentration, volume and the mark on an insulin syringe.
Fill relative to a 100-unit syringe.
Concentration = vial amount ÷ solvent volume. Volume to draw = target amount ÷ concentration. Units = volume in mL × 100 on a standard 1 mL insulin syringe.
Adding more water does not change how much peptide is in the vial — only how much liquid contains it. Larger volumes give easier-to-read syringe marks; smaller volumes give more concentrated solutions.
Educational reference only. Figures are compiled from published research literature. PepDex does not provide medical advice, dosing recommendations, or instructions for use.