Abnormal Premenopausal Bleeding

Considerations of Abnormal Premenopausal Bleeding Normal menstrual bleeding lasts an average of 4 days (range, 2–7 days), with a mean blood loss of 40 mL. Blood loss of over 80 mL per cycle is abnormal and frequently produces anemia. When there are less than 21 days between the onset of bleeding episodes, the cycles are [...]