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
Which one of the following statements is false with regard to pyuria in children – 
Select and explain. 
A. Presence of more than 5 WBC/hpf (high power field) for girls and more than 3 WBC/hpf for boys, B. Infection can occur without pyuria, C. Pyuria may be present without Urinary tract infection, D. Isolated pyuria is neither confirmatory nor diagnostic for Urinary tract infection
A: Presence of more than 5 WBC/hpf (high power field) for girls and more than 3 WBC/hpf for boys
Answer: A: Presence of more than 5 WBC/hpf (high power field) for girls and more than 3 WBC/hpf for boys 
Explanation: Pyuria is the presence of more than 5 WBCs / high power field, both for boys and girls.            —CPDT
Pyuria suggests infection, but infection can, occur in the absence of pyuria.                               —Nelson
Pyuria can present without UTI.                                                                                                              — Nelson
So, Isolated pyuria is neither confirmatory nor diagnostic for UTI.