This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Types of Genetic Disorders, Subject name: Pediatrics
[{'content': 'All of following statements are true regarding non-invasive prenatal screening(NIPT) test except : \nSelect and explain. \nA. Positive test need fuher confirmation, B. Evaluates fetal blood taken by cordocentesis for fetal abnormalities, C. High negative predictive value, D. Used in screening for aneuploidies', 'role': 'user'}, {'content': "Answer: B \nExplanation: Non-invasive prenatal screening tests: Used for Prenatal detection of chromosome abnormalities and reduce incidences of aneuploidies in high risk pregnancies. Pregnant woman's blood is evaluated prenatal screening. Screening test is done usually after 10 weeks of gestation. Because it has high negative predictive values,for fuher confirmation with invasive methods like chorionic villus sampling, amniocentesis .", 'role': 'assistant'}]