Results of prion protein peptides analysis in gonadotropin preparations by LC-SRM.

For all products a single vial was used for measurements. For products with *, six vials were pooled in order to minimize protein material losses.LC-SRM = liquid chromatography selected reaction monitoring; CV = coefficient of variation; u-hCG = urinary human chorionic gonadotropin; hMG = urinary human menopausal gonadotropin; hMG-HP = highly purified hMG; r-hCG = recombinant hCG; r-hFSH = recombinant human follicle-stimulating hormone; r-hLH = recombinant human luteinizing hormone.