Diagnostic Approach to Prostatitis

Introduction to Prostatitis Diagnosis

The European Association of Urology guidelines explicitly state that microbiological analysis of the ejaculate alone should not be used to diagnose chronic bacterial prostatitis (weak recommendation) 1

Midstream urine culture is the primary diagnostic test for acute bacterial prostatitis, as recommended by the European Association of Urology 1, 2
Blood cultures and complete blood count should be obtained in febrile patients with suspected acute bacterial prostatitis, according to the European Association of Urology guidelines 1, 2
Prostatic massage is contraindicated in acute bacterial prostatitis due to the risk of bacteremia (strong recommendation), as stated by the European Association of Urology 1, 2
The Meares-Stamey 2- or 4-glass test is the gold standard for diagnosing chronic bacterial prostatitis (strong recommendation), as recommended by the European Association of Urology 1, 2
This test requires a 10-fold higher bacterial count in expressed prostatic secretions compared to midstream urine, according to the Clinical Infectious Diseases journal 3
Semen culture alone should not be used routinely for the diagnosis of chronic bacterial prostatitis, as stated by the European Association of Urology 1, 2
Testing for atypical pathogens, such as Chlamydia trachomatis and Mycoplasma species, should be performed in chronic bacterial prostatitis, as recommended by the European Association of Urology 1, 2

Semen culture alone lacks standardization and cannot differentiate between prostatic infection and contamination from the urethra or seminal vesicles, according to the European Urology journal 1, 2
The Meares-Stamey test provides superior localization of infection to the prostate specifically, as stated by the Clinical Infectious Diseases journal 3

For suspected acute bacterial prostatitis, the European Association of Urology recommends obtaining midstream urine culture, collecting blood cultures if febrile, and avoiding prostatic massage 1, 2
For suspected chronic bacterial prostatitis, the European Association of Urology recommends performing the Meares-Stamey 2- or 4-glass test, testing for atypical pathogens, and not relying on semen culture alone 1, 2