Positive result indicates syphilis. Negative result rules it out or indicates that it has been adequately treated. Some false-positive results occur in people with other infectious diseases. Low levels of these hormones indicate hypothalamic and pituitary disorders . Estradiol To identify causes of infertility , menstrual irregularity , or precocious puberty .
Elevated levels indicate possible disorders.
Oral contraceptives lower estradiol levels. Prolactin To diagnose galactorrhea , amenorrhoea , or infertility . High levels occur normally during pregnancy, breastfeeding, and after a hysterectomy. Otherwise, high levels indicate a prolactin-secreting tumour. Many drugs, including oestrogens and antihypertensives, can cause elevated levels.