Function Tests
Test	Use
Basal body temperature	To detect ovulation in infertility evaluation.
Cystometry	To evaluate bladder function.
Gonadotropin-releasing hormone (GnRH) stimulation test	To differentiate hypothalamic from pituitary dysfunction in amenorrhea .
Postcoital test (Huhner test)	In cases of infertility, to determine the quality of cervical mucus and the penetrability of mucus by sperm, and to screen for anti-sperm antibodies. A day or two prior to ovulation, the couple has intercourse at a pre-designated time, and the woman then goes to the doctor's office within two to eight hours. A pelvic examination is done, and a sample of cervical mucus (presumably containing sperm) is removed and examined under a microscope.