Peptide Reconstitution Calculator
Enter a vial strength and how much bacteriostatic water you’re adding. Get the concentration, the volume to draw for a given amount, and the reading on a U-100 syringe — instantly.
Concentration
5 mg/mL
5,000 mcg/mL
Draw volume
0.05 mL
On a U-100 syringe
5 units
≈ 40 draws of this size per vial
Formula: concentration = mg ÷ mL · draw volume = dose ÷ concentration · U-100 syringe: 100 units = 1 mL. A neutral laboratory-handling reference for qualified researchers — research use only, not a dosing recommendation.
For research & educational purposes only
This tool is a neutral laboratory-handling reference for qualified and independent researchers. It is not medical advice or a usage recommendation, and these materials are not for human or animal consumption.
Frequently asked questions
How do I use a peptide reconstitution calculator?
Enter the vial strength in milligrams and the volume of bacteriostatic water you plan to add. The calculator returns the concentration (mg/mL), and — for a chosen amount per draw — the draw volume in millilitres and the equivalent units on a U-100 syringe.
What is the peptide reconstitution formula?
Concentration equals the peptide amount divided by the diluent volume: mg ÷ mL = mg/mL. The volume to draw for a given amount is that amount divided by the concentration. On a U-100 insulin syringe, 100 units equal 1 mL.
How much bacteriostatic water should I add to a peptide vial?
There is no single correct volume — it sets the concentration. More water gives a more dilute solution that is easier to measure in small increments; less water gives a more concentrated one. Pick a volume that makes your target amounts land on easy-to-read syringe markings.
How many units do I draw on a U-100 syringe?
Units equal the draw volume in millilitres times 100. For example, at 5 mg/mL a 0.5 mg amount is 0.1 mL, which is 10 units on a U-100 syringe.
Want the full method?
Read the step-by-step reconstitution guide, or browse reference materials — each ships with a lot-matched Certificate of Analysis.
Research use only. Not for human consumption or veterinary use. Sold exclusively to qualified researchers for in vitro and laboratory research. These statements have not been evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any disease. Refrigerate upon receipt. Keep in dark environment.