3 mL (1.5 mL min.) Serum from 1 SST. Provide maternal Date of birth (dd/mm/yy); LMP or Ultrasound; Number of Fetuses (Single/Twins); Diabetic status and Body Weight in Kg, IVF, Smoking & Previous history of Trisomy 21 pregnancy. Ship refrigerated or frozen. All positive results to submit 10 mL Whole blood in a Special tube available from TrueMedix for MBFD-21/NIPT along with duly filled Form G AND Maternal Serum Screen 2 reflex to MBFD-21 consent form (Form 12). Samples shall be accepted only from registered genetics clinics under PCPNDT Act. Ship refrigerated. DO NOT FREEZE. Valid between 10-13 weeks gestation.