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.