HCG

HCG in Canada is supplied by Horizon Peptides as a lyophilized powder in sealed 5000 iu research vials, available singly or in 3-vial and 10-vial packs. HCG is a glycoprotein hormone studied in gonadotropin receptor signalling research.

HCG, human chorionic gonadotropin, is not a peptide in the sense most of this catalogue uses the word. It is a glycoprotein of roughly 36,700 molecular weight, built from two distinct subunits and carrying attached sugar chains.

That structure is why it is quantified in international units rather than milligrams. A glycoprotein’s sugar chains vary between preparations, so mass alone does not describe the material adequately, and a unit reflecting measured activity is the standard instead.

It shares its alpha subunit with several other gonadotropins, differing only in the beta subunit. That shared architecture makes subunit-level comparison a recurring theme in research using it, since specificity has to arise from the differing half.

Studies using it concern receptor signalling and endocrine axis models in animal and cell-culture systems.