You should install What to expect pregnancy app. There u can find all tests & screenings listed trimester wise.

this double marker test and NT scan is prescribed to all or only in special <u>cases</u>

1st Sonography (6 to 8 weeks) to check whether the egg has implant in uterus in that scan thy ll check the fetus heartbeat and will tell u how many weeks pregnant yu r. With this ur gyanac will suggest u fr a a blood test like hiv, blood sugar, urine, TSH etc. <br> 2nd sonography will happen in between 12 to 15 weeks which is known as NT scan with this double marker blood test is prescribed to c whether u r in high or. Low risk pregnancy.. <br> Incase double marker.nt prescribed thn don't worry triple or quadruple will b&nbsp; prescribed in 20 to 25 weeks (2nd <u>trimester</u>) with a scan of anomaly.. <br>