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: Microbiology
>102 colony forming unit per ml of urine is significant in ? 
Select and explain. 
A. Suprapubic aspiration, B. In-out caterization, C. Per uretheral catheterization, D. Clean void urine
A: Suprapubic aspiration
Answer: A: Suprapubic aspiration 
Explanation: Ans. is 'a' i.e.,Suprapubic aspiration The number of bacteria taken as significant bacteriuria varies depending upon the type of sample -Suprapubic aspiration of bladder -102 colony-forming units (CFU) per ml.In-out catheterization of bladder 4 >103 CFU/mlClean void urine >104 CFU/mlCarefully, collected urine in bag (unspun urine) - >10' CFU/ml