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Reconstitution

Peptide Calculator

Calculate how much bacteriostatic water to add to your vial — and exactly how many insulin-syringe ticks (IU) equal your desired dose.

Inputs
Peptide amount in vial
Desired concentration
Desired dose per injection
Syringe type
Insulin = 100 IU per 1 mL (1 IU = 0.01 mL)
Results
Bacteriostatic water to add
5mL
Inject this volume into the vial to reach the target concentration
Concentration per IU
10mcg / IU
Each tick (1 IU) on a 100 IU/mL insulin syringe
Draw for desired dose
10IU
= 0.1 mL
How to reconstitute
  1. 01
    Clean the vial top
    Wipe the rubber stopper of the peptide vial and the bacteriostatic water vial with a fresh alcohol swab. Let dry for a few seconds.
  2. 02
    Draw the calculated volume of bacteriostatic water
    Using a 3 mL syringe (or appropriate size), draw 5 mL of bacteriostatic water.
  3. 03
    Inject slowly onto the vial wall
    Angle the needle so the water runs gently down the inside of the vial — not directly onto the lyophilised peptide pellet. This avoids denaturing the peptide.
  4. 04
    Swirl, don't shake
    Gently roll or swirl the vial between your palms until the powder is fully dissolved. Shaking creates foam and can damage fragile peptides.
  5. 05
    Store reconstituted vial in the fridge
    Refrigerate at 2–8 °C. Most peptides remain stable for 2–4 weeks once reconstituted. Always check the specific peptide's stability profile.
  6. 06
    Draw your dose
    With an insulin syringe, draw to the 10 IU mark for your 100 mcg dose.
For informational purposes only. This calculator is provided for educational use. Always consult a qualified healthcare professional before administering any peptide or injectable substance. MarkerX does not endorse, supply, or recommend the use of any specific compound.