- If a woman capable of becoming pregnant, agree to have urine pregnancy testing performed at screening (must be negative) and agree to use a medically acceptable form of birth control throughout the study duration and for at least one week prior to and after completion of the study. Women considered capable of becoming pregnant include all females who have experienced menarche and who have not experienced menopause (as defined by amenorrhea for greater than 12 consecutive months) or have not undergone successful surgical sterilization (hysterectomy, bilateral tubal ligation, or bilateral oophorectomy).