How many IUs of hCG are in one vial?

Our vial holds 5,000 IU of human chorionic gonadotropin as a lyophilized powder. hCG is measured in international units rather than milligrams because it’s a large glycoprotein, about 36,700 Da, and its sugar content varies between preparations. IU are set against a reference standard for biological activity, so they compare batches more reliably than mass. Mass-based comparisons across suppliers can mislead for the same reason.

Prescription hCG products come in other sizes, commonly 5,000 or 10,000 USP units per vial. Once a lab reconstitutes a vial, the IU per mL depends entirely on the volume of diluent added, so record that volume and calculate concentration from the labeled IU. The lot COA confirms identity and quantity. Buy HCG 5000 IU for laboratory research.