Pediatrics In the first trimester screening for Down syndrome which of the following test is to be done? A Beta HCG, PAPPA B MSAFP, PAPPA C Inhibin, PAPPA D Unconjugated Estriol, PAPPAs 💡 Explanation In the first trimester screening for Down syndrome which of the following test is to be done? ✓ Correct Answer: A. Beta HCG, PAPPA