The cause of infertility may be difficult to determine but may include inadequate levels of certain hormones in both men and women, and trouble with ovulation in women.
Blood tests that might be needed include day 3 follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), AMH, prolactin, testosterone (T), progesterone (P4), 17-hydroxyprogesterone (17-OHP), thyroxin (T4), thyroid stimulating hormone (TSH).
