- For female participants to be considered as not having childbearing potential, they must meet 1 or more of the following criteria: postmenopausal for at least 24 consecutive months; surgically sterile (ie, have had a hysterectomy or bilateral oophorectomy); females with irregular menstrual periods and/or on hormone replacement therapy must have a documented serum follicle stimulating hormone level > 35 mIU/mL.