The following specimens are necessary for completion of a prenatal test:u003cbr/u003eMaternal blood (1-4 ml in a purple-top EDTA tube) is required for maternal cell contamination (MCC) studies. The maternal sample should accompany the prenatal specimen or be shipped to arrive prior to or concurrently with the prenatal sample.u003cbr/u003eMaternal and Paternal blood is required for prenatal array testing.u003cbr/u003eIf one prenatal test is ordered, one of the following is required: 10-15 ml of Amniotic fluid, 30 mg of Chorionic villi, min. 1 T25 flasks of cultured amniocytes or cultured chorionic villi. If more than one prenatal test is being ordered on a specimen, one of the following is required: 30 ml of Amniotic fluid, 30 mg of Chorionic villi, 3 T25 flasks of cultured amniocytes or cultured chorionic villi. u003cstrongu003ePlease note that orders for prenatal diagnostics will be accepted only upon notification to our officeu003c/strongu003e.