Which one of the following statements is false with regard to pyuria in children?

Gram stain of the uncentrifuged urine revealing 2 or more bacteria per oil immersion field suggests significant bateriuria. Dipstick examination (combining detection of leukocyte esterase and nitrate) is as sensitive as microscopic urinalysis in screening for UTI. The defenitive diagnosis of UTI depends on the urine culture showing>= 100000 organism/ml. Ref: Kliegman, Behrman, Jenson, Stanton (2008), Chapter 538 "Urinary Tract Infections", In the book, "NELSON TEXTBOOK OF PEDIATRICS", Volume 2, 18th Edition, New Delhi, Pages 2225-6.