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
The normal concentration of protein in CSF at 4 weeks may be as high as- 
Select and explain. 
A. 500mg %, B. 125mg%, C. 50mg%, D. 25mg%
D: 25mg%
Answer: D: 25mg% 
Explanation: Ans. is 'd' i.e., 25 mg% It is 15-40 mg%. Protein content in CSF Age 63 mg% Premature 73 mg% Day 1 47 mg% Day 7 15-40 mg% After 7 days