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Double screen test is done between 10-13 weeks of pregnancy. It assesses the possibility of Downs syndrome, trisomy 18, trisomy 21 in the fetus. Double screen test is a blood test where Free Beta HCG (human chorionic gonadotrophin) and PAPP-A (Pregnancy Associated Plasma Protein) symptoms are checked in the blood.
Include the mother's date of birth (dd/mm/yy); Recent fetal ultrasound and mother date of birth is reqired and any prior pregnancies with trisomy 21. It is required to submit a properly completed Maternal Serum Screen request form. Acceptable gestation is