2 - 3 days
Quad Screen Maternal Serum
AFP, Quad Test Profile
Alpha Fetoprotein, Quad Test Profile
Triple Test Replacement Assay
Edwards Syndrome (Trisomy 18) Risk
Neural tube defects (NTD) Risk
Prenatal risk for fetal congenital abnormalities
Down Syndrome (Trisomy 21) Risk
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Chemiluminescent Immunometric Assay
Assessment of prenatal risk for Down Syndrome (Trisomy 21), neural tube defects (NTD), and Edwards Syndrome (Trisomy 18).
Interpretive report provided.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in a red top tube from a patient with a maternal gestation of between 16 weeks 0 days and 22 weeks 6 days. Centrifuge, aliquot serum into a plastic vial within 2 hours of collection and refrigerate. (Frozen is also acceptable). Please provide a completed QUAD/AFP Requisition available online at http://mlabs.umich.edu/files/pdfs/REQ-QUAD_refr.pdf or the following information: gestational age (weeks and days on first ultrasound date >6 weeks 0 days; if ultrasound information is not available record first days of last menstrual period), maternal weight, maternal date of birth, insulin-dependent diabetes status prior to pregnancy, multiple gestation (single, twin, triplets), race, and previous history of Down syndrome or neural tube defect (NTD) pregnancy for the patient.