The Peptide Nook

Peptide Calculator

Work out exactly how many units to draw on an insulin syringe after mixing a peptide vial. Enter the amount of peptide in the vial, the bacteriostatic water you added, and your dose.

Peptide Reconstitution & Dosing Calculator

Enter what is in your vial, how much bacteriostatic water you add, and your dose. The calculator shows exactly where to draw on an insulin syringe.

1Peptide in the vial

The total amount printed on the vial label.

2Bacteriostatic water added

More water makes each dose a bigger, easier-to-measure draw. It does not change how much peptide is in the vial.

3Dose per injection

Use the dose from your protocol or your clinician. 1 mg = 1,000 mcg.

4Your syringe

All three are U-100 insulin syringes: 100 units = 1 mL. Smaller barrels make small doses easier to read.

Draw your syringe to

– units

Volume to draw
–
Concentration
–
Each unit holds
–
Doses per vial
–
Show the math

    This tool does arithmetic only. It does not choose a dose or confirm that any substance is right for you. Double-check every result against your syringe and your clinician’s instructions.

    How the math works

    1. Concentration = peptide in the vial (mg) ÷ water added (mL)
    2. Volume to draw = your dose ÷ concentration
    3. Syringe units = volume (mL) × 100 on a standard U-100 insulin syringe

    Adding more water does not change how much peptide is in the vial. It spreads the same amount through more liquid, so each dose becomes a larger draw that is easier to measure accurately.

    New to this? Start with the Beginner’s Guide or read how to use the calculator.