This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver disorders, Subject name: Pediatrics
[{'content': 'In neonatal cholestasis, if the serum gamma glutamyl transpeptidase (GGT) is more than 600 IU/L, the most likely diagnosis is: \nSelect and explain. \nA. Neonatal hepatitis, B. Choledochal cyst, C. Sclerosing cholangitis, D. Biliary atresia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 3 Enzymes reflect cholestasis: Alkaline phosphatase, 5\'nucleotidase & Gamma glutamyl transpeptidase. About GGT in Cholestasis: (Normal value of GGT is 5-40 IU/L) "GGT levels are commonly elevated to values more than 10 times normal in biliary atresia while in hepatic causes it is raised to about three times normal" Value of 600 IU/L in the patient- elevation of more than ten times the normal value: \'biliary atresia\'.', 'role': 'assistant'}]