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
[{'content': 'Which one of the following statements is false with regard to pyuria in children \nSelect and explain. \nA. Presence of more than 5 WBC/HPF 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', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pyuria - (leukocytes in the urine) suggest infection, but infection can occur in the absence of pyuria, consequently this finding is more confirmatory than diagnostic Pyuria can be present without UTI isolated pyuria is unusual since inflammatory reaction in the kidney or collecting system are also associated with hematuria Pyuria is > 5 WBC / HPF of clean catch MID stream urine sample.', 'role': 'assistant'}]