What Is Cystitis?
Reviewed: Dr. Gromatzky
9. Diagnosis
Testing a urine sample for the presence of white blood cells can determine whether a patient has cystitis. If the test is positive, a doctor confirms the diagnosis by looking at the urine under a microscope. Sometimes negative results also are double-checked by microscopy.
To discover the cause of inflammation, a urine sample is cultured in a petri dish. If more than 1000 colony-forming units (CFU) per milliliter of urine are found, then a diagnosis of cystitis is made, especially in men. More 10,000 CFU indicates a kidney infection, and more than 100,000 indicates a widespread bacterial infection.
Advertisement
