How is pyuria defined?

Updated: Jul 01, 2021
  • Author: Tibor Fulop, MD, PhD, FACP, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
  • Print

Pyuria is defined as more than 5-10 white blood cells (WBCs) per high-power field (hpf) on a specimen spun at 2000 rpm for 5 minutes. Almost all patients with pyelonephritis have significant pyuria (> 20 WBCs/hpf), although the numbers may be smaller, particularly in those with subacute pyelonephritis.

Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!