Peptide reconstitution calculator
Enter your vial size, how much bacteriostatic water you added, and your dose. Peptide Streak gives you the concentration and the exact syringe units to draw — no mental maths at 2am.
First time mixing a vial? Read Peptides for Beginners first.
Not sure what dose to use? Browse the Peptide Library to find typical dose ranges, frequency, and storage guidance for each peptide.
Mix 5 mg with 2 ml BAC water. Each unit = 25 mcg. For a 250 mcg dose, draw 10 units. You get 20 doses per vial.
Mix my vial
- 1Wipe both stoppers
Swab the peptide vial stopper and the BAC water stopper with a fresh alcohol pad and let them air dry for a few seconds.
- 2Draw your BAC water
Use a clean syringe to draw the exact volume of bacteriostatic water you calculated above.
- 3Inject slowly down the glass
Angle the needle so the water runs down the inside wall of the vial. Never squirt it directly onto the powder — the force can damage the peptide.
- 4Do not shake
Shaking foams and denatures peptides. Set the vial down and let it sit for a minute.
- 5Swirl gently
Roll or swirl the vial slowly between your fingers until the solution is completely clear. Cloudy or floating particles mean something is off.
- 6Store it cold
Once reconstituted, keep the vial in the fridge at 2–8 °C, away from light. Most reconstituted peptides are used within 28 days. Unmixed lyophilised powder stays stable in the freezer.
- 7Label the vial
Write the mix date and concentration on the vial or add it in Peptide Streak so you never have to guess.
Stop recalculating every single dose
Peptide Streak stores your vials and schedule, then shows today's doses with the units already worked out. One tap to log, and your vial count updates itself.
- Set up your whole regimen in about a minute
- Today's doses, pre-calculated, on your phone
- Vial levels and expiry tracked automatically
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