What is the peptide reconstitution formula?
The core formula is vial mg x 1,000 divided by BAC water mL, which gives mcg per mL. Then dose mcg divided by mcg per mL gives mL per dose. On a U-100 insulin syringe, multiply mL per dose by 100 to get units.
Formula in one line
Units = dose mcg / ((vial mg x 1,000) / BAC water mL) x 100.
What each input means
- Vial mg: total dry peptide powder in the vial.
- BAC water mL: liquid added to dissolve the powder.
- Dose mcg: target amount for one dose.
- Units: the mark on a 1 mL U-100 insulin syringe.
When the answer looks wrong
If the result is under 2 units, the draw is hard to read. If it is over 100 units, one 1 mL insulin syringe does not hold the whole dose. Recheck mg vs mcg first.
Pepdex is an educational reference, not medical advice. Peptides vary in legal, approval, and evidence status. This answer is meant to explain the concept, not prescribe a protocol or replace a qualified clinician.
Helpful next pages
More dose math answers
Last updated 2026-07-07.