This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Bilirubin UDP glucuronyl transferase activity is absent in 
Select and explain. 
A. Crigler-Najjar type I, B. Crigler-Najjar type II, C. Rotor syndrome, D. Gilbert syndrome
A: Crigler-Najjar type I
Answer: A: Crigler-Najjar type I 
Explanation: Syndrome
Bilirubin UDP glucuronyl transferase activity




Crigler-Najjar type I
			Crigler-Najjar type II
			Gilbert syndrome
Absent
			Markedly reduced : 0-10% of Normal
			Reduced : 10-30% of Normal