Follicle stimulating hormone (FSH) Serum, urine Serum Adult male: 1-7 mU/ml Adult female: Follicular and luteal phase: 1-9 mU/ml Midcycle peak: 6-26 mU/ml Postmenopausal phase: 30-118 mU/ml Child 6 months-10years: < 1-3 mU/ml Urine Adult male: 4-18 U/24 hours Adult female: Follicular phase: 3-12 U/24 hours Midcycle peak: 8-60 U/24 hours Child 1-8 years: Male: 0.5-4.5 U/ 24 hours Female: 0.5-4 U/24 hours To diagnose gonadal dysfunction or failure To evaluate infertility in the female and testicular dysfunction in the male The urine test is used for children with precocious puberty and to identify the time of ovulation when in vitro fertilization is planned Primary testicular failure Orchitis Castration Idiopathic precocious puberty Ovarian agenesis Menopause Central nervous system lesion Polycystic disease of the ovary Hypofunction of anterior pituitary or hypothalamus Anorexia Nervosa Adrenal tumor Congenital adrenal hypoplasia Sickle Cell Disease Recent radioactive isotope scan Hemolysis Incomplete collection of urine