- If female of childbearing potential, is not pregnant (confirmed by negative urine pregnancy test), non-lactating, and will use reliable birth control measures throughout the study. Female of child bearing potential is defined as a female who has experienced menarche, and who has not undergone successful surgical sterilization: hysterectomy, bilateral oophorectomy or ovariectomy, bilateral tubal ligation or salpingectomy; or is not postmenopausal for at least 1 year.;