The best time to do chorionic villous sampling is:: (A) Between 6-8 weeks, (B) Between 7-9 weeks, (C) Between 9-11 weeks, (D) Between 11-13 weeks
Answer is D. Chorionic villus sampling prenatal diagnosis of genetic disorders transcervical done:at 10-12 weeks transabdominal done from 10 weeks to term diagnosis can be obtained by 24 hours complications like fetal loss,oromandibular limb deformities,vaginal bleeding are higher D.C.DUTTA'S TEXTBOOK OF OBSTETRICS,Pg no:107,7th edition