Peptide reconstitution calculator.
Tells you exactly how many units to draw on an insulin syringe for any dose. Works for any peptide on the catalog. For laboratory research only — not dosing advice.
Syringe volume
Peptide per vial
Bacteriostatic water added
Desired dose per injection
How to read the result
Insulin syringes are graduated in units, where 100 units equals 1 mL on a standard 1 mL syringe. The calculator converts your peptide concentration to the exact tick mark on the barrel.
Formula
- Concentration (mg/mL) = peptide_mg ÷ water_mL
- Volume per dose (mL) = dose_mcg ÷ (concentration × 1,000)
- Syringe units = volume_per_dose × 100
Worked example
A 5 mg vial reconstituted with 2 mL of bacteriostatic water gives a concentration of 2.5 mg/mL. For a 250 mcg dose: 0.25 ÷ 2.5 = 0.10 mL = 10 units on a 1 mL insulin syringe.
Picking a syringe
- 0.3 mL (30 units): highest precision; best for very small volumes (e.g. < 0.3 mL per dose).
- 0.5 mL (50 units): good general-purpose choice for typical 50–500 mcg peptide research.
- 1.0 mL (100 units): use when single doses are large (≥ 0.5 mL) or for higher concentrations.
Reconstitution best practice
- Allow the lyophilized vial to reach room temperature before opening (~20 min).
- Inject bacteriostatic water down the inner wall of the vial. Do not stream onto the powder cake.
- Swirl gently for 30 seconds. Do not vortex.
- Allow 5 minutes to dissolve. The solution should be visually clear with no particulates.
- After reconstitution, store at 2–8 °C and use within the window noted on the lot's COA.
Research use only. This calculator computes a syringe marking from a concentration and a target dose. It is not a clinical dosing tool. Lumera Labs supplies peptides as laboratory reference standards. Items are not approved drugs and are not intended for human consumption, therapy, or diagnosis.