<prompt> Which one of the following statements is false with regard to pyuria in children -Presence of more than 5 WBChpf high power field for girls and more than 3 WBChpf for boysInfection can occur without pyuriaPyuria may be present without Urinary tract infectionIsolated pyuria is neither confirmatory nor diagnostic for Urinary tract infection  <response>: Ans. is a i.e., Presence of more than 5 WBChpf for girls and more than 3 WBChpf for boys o Pyuria is the presence of more than 5 WBCs high power field, both for boys and girls. --CPDT o Pyuria suggests infection, but infection can occur in the absence of pyuria. --Nelson o Pyuria can present without UTI. -- Nelson o So, Isolated pyuria is neither confirmatory nor diagnostic for UTI. 