PeptideGuide UK

Peptide Reconstitution Calculator

Calculate how to reconstitute peptides with bacteriostatic water — get concentration, units to draw per injection, and total doses per vial.

Research use only. This calculator is provided for informational and research purposes. Always verify calculations with a qualified healthcare professional before administration.
Calculator Inputs
Select a peptide or enter custom values below

Total amount of peptide in the vial in milligrams

Amount of bacteriostatic water used to reconstitute (default: 2 ml)

Your target dose per injection in micrograms (mcg)

Results
Calculated values update automatically as you type

Concentration

Peptide concentration after reconstitution

2500 mcg / ml

Units to draw

On a standard U-100 insulin syringe (100 units = 1 ml)

10.0 units

Doses per vial

Total number of injections from this vial

20.0 doses

Cost per dose: check current supplier prices on our supplier directory

Insulin Syringe Guide
Visual guide for drawing your dose (U-100 syringe)
102030405060708090100units10

How to Reconstitute Peptides

1

Add bacteriostatic water

Draw up the amount of bacteriostatic water shown above into a fresh insulin syringe. Inject slowly down the side of the vial — never directly onto the powder.

2

Allow to dissolve

Gently swirl the vial. Do not shake. Allow the peptide to dissolve completely. The solution should be clear.

3

Draw your dose

Using the units calculated above, draw your dose into a fresh insulin syringe. Store the reconstituted vial refrigerated and use within 28 days.

Calculation Formulas

  • Concentration: (Vial mg × 1,000) ÷ Water ml = mcg per ml
  • Units to draw: (Desired dose mcg ÷ Concentration mcg/ml) × 100 units
  • Doses per vial: (Vial mg × 1,000) ÷ Desired dose mcg

A standard U-100 insulin syringe contains 100 units per 1 ml.