Im 35 years old Turned 35 in june only Done my Quadruple marker test awaiting for my results My doubt is since im 35 should I have to do Amniocentesis test also even though my Quadruple test results come out to be good without no issues Or TIFFA scan is enough to detect any kind of problems Can Tiffa scan help out to detect birth defects I have a healthy son of 2.7 years No history of any birth issues in family Plz suggest