<qa>  What is the sensitivity of a negative serum or urine pregnancy test?8. Females of childbearing potential FCBP must have a negative serum or urine pregnancy test with a sensitivity of at least 25 mIUmL within 10 - 14 days prior to and again within 24 hours of prescribing pomalidomide and must either commit to continued abstinence from heterosexual intercourse or begin TWO acceptable methods of birth control, one highly effective method and one additional effective method AT THE SAME TIME, at least 28 days before she starts taking pomalidomide. FCBP must also agree to ongoing pregnancy testing. Men must agree to use a latex condom during sexual contact with a FCBP even if they have had a vasectomy. 