Peptide reconstitution calculator.
Enter your vial size, the amount of bacteriostatic water you plan to add, and the target amount per administration. The calculator returns the exact volume to draw — expressed in both millilitres and the unit value to read on a U-100 insulin syringe.
Frequently asked.
What is a U-100 insulin syringe?+
A U-100 syringe is scaled so 100 units equals 1 millilitre. Researchers use them for small-volume work because the unit marks are easier to read accurately than millilitre marks at sub-millilitre volumes. This calculator outputs the unit value to read on the syringe.
How much bacteriostatic water should I add?+
There is no single correct volume — it is a trade-off between concentration and dose granularity. Common volumes are 1 ml, 2 ml, or 3 ml of bacteriostatic water per vial. Smaller volumes give a more concentrated solution (fewer units to draw); larger volumes give finer granularity for small target amounts.
How long is reconstituted peptide stable?+
Most reconstituted peptides retain potency for 28 days when stored at 2–8°C in bacteriostatic water. Specific stability varies by compound — refer to the product page for each peptide. Bacteriostatic water (containing 0.9% benzyl alcohol) inhibits microbial growth; sterile water does not.
Does this calculator account for body weight?+
Optionally. Enable the body-weight section and enter the subject's weight and a mcg/kg or mg/kg ratio. The calculator multiplies to give the total target amount, then runs the same reconstitution maths. Disable the section to enter an absolute target amount directly.
Is this medical advice?+
No. The tool performs arithmetic on values you enter. It does not recommend doses, suggest therapeutic uses, or interpret research protocols. All output is for in-vitro research planning. Consult a qualified medical practitioner for any clinical question.
This calculator performs arithmetic on values you enter. It does not recommend doses, protocols, or therapeutic uses. All peptides are sold strictly for in-vitro research and laboratory purposes. For clinical questions, consult a qualified medical practitioner. Read the full disclaimer.