What can be the cause for too many white blood cells in urine of my 8 year old son. urine blood and stool check showed no infections nor bacteria?

Foreskin?: White cells can be present in the urine if there is debris in the foreskin, or if there is inflammation around the urethral opening.

White Cells in Urine: WBC's in urine mean inflammation anywhere in the urine collecting system, starting from the outer part of genitals all the way up to the kidneys. While infection may be a frequest cause, other causes of inflammation like stones, dehydration, allergy or constipation may cause white cells to show in urine. I have found constipation toGet your urine retested after hydration fo further treatment.