Research Tool · Free

Peptide dose calculator

Enter your vial size, reconstitution volume, and desired dose — we'll tell you exactly how much to draw and how many units that is on a U-100 insulin syringe. No math in your head.

1. Load a preset (optional)

Vial size + recon volume are locked to the preset. Clear it to go custom.

2. Vial size

3. Reconstitution volume (mL of BAC water)

4. Desired dose

5. Syringe

Draw this much

0.25 mL

25 u

Concentration2,000 mcg/mL (2 mg/mL)

Dose drawn500 mcg (0.500 mg)

Doses per vial10

On a U-100 insulin syringe (the most common type), 100 units = 1.00 mL. A half-syringe is 50 units; a quarter is 25 units.

How the math works

Concentration = vial mcg ÷ mL of diluent. Draw volume = dose mcg ÷ concentration. Units (U-100) = draw mL × 100. That's it.

Why so many recon volumes?

Concentrating the vial means smaller draws (great for tiny doses). Diluting means larger, more comfortable SQ injections. Pick what matches your syringe.

What's a U-100 syringe?

A standard insulin syringe calibrated so 100 units = 1.00 mL. 10 units = 0.10 mL = one-tenth of a syringe.

Prefer the exact numbers in the box?

Every Origin Health product ships with a printed reference PDF — the reconstitution math is already done for the batch you receive, for every protocol dose. This calculator is for when you want to experiment with a different recon volume.

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For research use only. Not medical advice. Always cross-check math against the specific protocol you're following.