This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Which one of the following specimen is not refrigerated prior to inoculation? 
Select and explain. 
A. CSF, B. Plus, C. Urine, D. Sputum
A: CSF
Answer: A: CSF 
Explanation: unavoidable, CSF should NOT be refrigerated, since it is an excellent culture medium and fungi will continue to replicate at 25-30degC. Other body fluid specimens may be stored at 4degC overnight, if necessary before culturing. Ref ananthnarayana and panikers microbiology textbook 8/e p650