Peptide Reconstitution Calculator
The reliable way to translate a peptide dose into the exact number of units on your insulin syringe, accounting for vial mass, reconstitution volume, and syringe capacity.
- Concentration after reconstitution
- 2500 mcg/mL (25.00 mcg/unit)
- Units to draw on syringe
- 10.0 units
- Volume drawn
- 0.100 mL
- Doses per vial
- 20.0
Reconstituted peptides are typically stable refrigerated for 28 days post-reconstitution. Use bacteriostatic water (0.9% benzyl alcohol) for multi-dose vials; sterile water for single-use only. Confirm dose math with your prescriber before injection.
How the math works
A typical peptide vial (e.g., 5 mg BPC-157) reconstituted with 2 mL of bacteriostatic water yields 2,500 mcg/mL. On a U100 insulin syringe (100 units = 1 mL), that equals 25 mcg per unit. For a 250 mcg dose, draw 10 units. The calculator above handles any vial / water / dose / syringe combination.
Practical pointers
- Reconstitute with bacteriostatic water (0.9% benzyl alcohol) for any vial intended for multiple doses; sterile water is single-use only.
- After reconstitution, refrigerate at 2–8°C; most peptides are stable for 28 days reconstituted.
- If your calculated units exceed the syringe capacity, add more BAC water to dilute (e.g., go from 2 mL to 3 mL of BAC water).
- Air shipment of unreconstituted (lyophilized) peptides is generally acceptable at controlled room temperature for <72 hours; reconstituted vials require cold-chain.
Educational tool. Confirm dosing with your prescriber and pharmacy. Last medically reviewed by the HealthRX.com Medical Team.