Example calculation
A 5 mg vial mixed with 2 mL gives 2,500 mcg/mL. A 250 mcg target dose is 0.1 mL, or 10 units on a U-100 syringe.
What this calculator solves
Reconstitution math starts with concentration. Once the vial amount and diluent volume are known, every target dose can be converted into a draw volume.
Use it when you need to turn a dry vial and a chosen water volume into a clear concentration before drawing a dose.
- Concentration = vial amount / diluent volume
- Dose volume = target dose / concentration
- U-100 units = dose volume in mL x 100
When to recalculate
Re-run the calculation whenever vial strength, water volume, target dose, or syringe type changes. Small input changes can produce meaningfully different unit markings.
PepSync is an educational calculator. It does not choose a dose or replace instructions from a clinician, pharmacy, or product label.
Sources used
Frequently asked questions
Is this different from a peptide dose calculator?+
This page focuses on reconstitution: vial amount plus water volume creates concentration. A dose calculator starts from a known concentration and converts a target dose into mL or units.
Can I use this for BPC-157?+
Yes, if you already know the BPC-157 vial amount, water volume, and target dose. The dedicated BPC-157 calculator keeps those examples and related guidance on one peptide-specific page.
Does PepSync tell me how much to take?+
No. It converts values you enter into concentration, mL, and syringe units. Dosing decisions should come from appropriate professional or product instructions.