Peptide Dosage Calculator

How the math works

Reconstituted concentration equals total peptide mass divided by bac water volume. A 10 mg vial diluted in 2 ml bac water yields 5,000 mcg/ml. A 250 mcg research dose therefore draws 0.05 ml — which reads as 5 units on a U-100 syringe.

Choosing a dilution

Smaller research doses benefit from more dilute reconstitution so the draw volume is easier to measure accurately. Compounds dosed in tens of mcg (ipamorelin, tesamorelin) typically use 2–3 ml. Compounds dosed in mg ranges (semaglutide, tirzepatide) often use 1–2 ml to keep injection volumes small.

Syringe types

U-100 insulin syringes: 100 units = 1 ml. U-40 syringes: 40 units = 1 ml. U-100 is the lab-standard default in most research protocols.