Letter: The immunoreactive hTSH contamination of "immunochemical grade" hFSH preparation.
D004340:Drug Contamination; D005640:Follicle Stimulating Hormone / Q000032:analysis*; D006801:Humans; D011863:Radioimmunoassay; D013972:Thyrotropin / Q000032:analysis*
D005640:Follicle Stimulating Hormone; D013972:Thyrotropin