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 therapeutic use.