What is the presentation of microscopic hematuria in patients with acute pyelonephritis (kidney infection)?

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

Microscopic hematuria may be present in patients with uncomplicated acute pyelonephritis, but other causes should be considered, particularly calculi. This is especially true if the patient does not respond to therapy. White cell casts are suggestive of pyelonephritis; however, centrifuge speeds (> 2000 rpm) used for urinalysis sediment preparation often fracture them and lead to their absence in the sediment.


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