plasma levels of testosterone were measured by radioimmunoassay before and after 3 days ' administration of human chorionic gonadotrophin ( hcg ) 2,000 iu/d in 34 prepubertal boys ( 6 normal , 3 with anorchia , 5 with micropenis , 8 with cryptorchidism , 6 with hypogonadotrophic hypogonadism and 6 with hypospadias ) .
C0018062
human chorionic gonadotrophin
C0010417
cryptorchidism