No safe equivalence follows from matching the number printed beside two different units. Milligrams describe mass; international units describe specified biological activity. Treating them as interchangeable removes the very information the unit is meant to convey.
The live Serum Research hMG listing displayed “75 mg” when checked. In contrast, the Canadian MENOPUR monograph describes a named product in FSH and LH activity units. The public catalog label does not establish a conversion between those statements.
The missing information is the point
A conversion would require evidence about the exact preparation and its validated specific activity. It cannot be inferred from a similar product name, the size of a vial, a photograph of powder or a comment that a vendor “probably meant IU.”
The unit uncertainty remains important when interpreting or documenting the product label. Silently correcting the label may make a page look cleaner while introducing an unverified claim. Equally, reproducing the number without noting the unit problem can make an unresolved listing look clinically interpretable.
For laboratory documentation, the responsible questions are what quantity was measured, by which method, against which reference, and for which lot. The answer must come from traceable documentation rather than a conversion calculator built on an assumed identity.
For patient care, a licensed pharmacist and prescriber must resolve any discrepancy in the actual medicine before it is used. This article supplies no conversion, reconstitution ratio or injection calculation.
The broader lesson is about precision: a number is not meaningful without its measurement definition. Here, the public record supports an identity-and-labeling question, not a usable potency claim. Official medicine information is a comparison reference only; it does not authenticate, correct or approve a separate research catalog product.