In the first trimester screening for Down syndrome which of the following test is to be done?
a. Beta HCG, PAPPA(Ref: Nelson's 20/e p 610-615)Methods for Antenatal Screening for Down Syndrome - In 1st Trimester pg 79Screening methodDetection rateMaternal age + Biochemical markers (b-hCG, PAPPA)Q70%Maternal age + Radiology (USG- NT>3mm)80%-83%Combined test: Mat. Age + Radiology (USG-NT>3mm)82%-87%*PAPPA is Pregnancy Associated Plasma Protein A
Beta HCG, PAPPA
MSAFP, PAPPA
Inhibin, PAPPA
Unconjugated Estriol, PAPPAs
Genetics And Genetic Disorders