Sources of error in clinical bioassays of serum chorionic gonadotropin.
D001681:Biological Assay; D001769:Blood; D006063:Chorionic Gonadotropin / Q000097:blood*; D006062:Gonadotropins; D006801:Humans
D006063:Chorionic Gonadotropin; D006062:Gonadotropins
BLOOD; GONADOTROPINS, CHORIONIC/in blood