By CHD do u mean Congenital Heart Disease? CHD can not be rule out by 12 wks. The double marker test which you did is for chromosomal anomalies like trisomy, Down' syndrome. Heart anomalies can only be rulled out by ultrasonography done after 18 wks. Best time for it is 22-24 wks.
Answered2022-03-26 15:32:11
1/1 people found this helpful