- All WOCBP MUST have a negative urine pregnancy test at baseline, or within 7 days prior to receiving investigational product. The minimum sensitivity of the pregnancy test must be 25 IU/L or equivalent units of HCG. If the urine pregnancy test is positive, a serum pregnancy test will then be performed to confirm the result. In the event that both the urine and serum pregnancy tests are positive, the subject must not receive investigational product and must not be enrolled in the study.