Peptide Reconstitution 101: Getting Dose Calibration Right

Reconstitution — dissolving a lyophilized peptide in bacteriostatic water — is where research protocols most often go sideways. The chemistry isn’t the hard part. The arithmetic is.

Three variables, one answer

Every reconstitution question reduces to three inputs: the total peptide in the vial (mg), the volume of bacteriostatic water you dissolve it in (mL), and the dose the protocol calls for (mcg). The derived concentration (mg/mL) then tells you how much volume — or how many insulin-syringe units — each shot requires.

Use our calculator

We built a free, in-browser reconstitution calculator that handles the math for you, flags when a draw exceeds your syringe capacity, and tells you how many doses a vial will yield at your chosen schedule. Bookmark it.