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Expressed Prostatic Secretions

Examination of expressed prostatic secretions tests a sample of the secretion for signs of inflammation or bacterial infection.

While you bend over or lie on your side or back, the doctor inserts a lubricated, gloved finger into the rectum and presses each side of the prostate gland 6 or 7 times. The urethra is then gently "milked" with a gloved finger. The secretions are collected in a tube or on a swab.

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The secretions are examined under a microscope for signs of inflammation and are cultured in the lab to find out if bacteria are present.

Why It Is Done

This test may be done if you have:

Results

Findings of expressed prostatic secretions may include the following.

Normal

This may also be called a negative result.

Microscopic

Few or no white blood cells are seen when the sample is viewed under a microscope.

Culture

No bacteria grow in the sample.

A negative culture may mean that the symptoms are caused by chronic prostatitis/pelvic pain syndrome, inflammatory or noninflammatory.

Abnormal

This may also be called a positive result.

Microscopic

White blood cells, pus cells, or other types of cells that point to inflammation are seen when the sample is viewed under the microscope.

Culture

Bacteria grow in the sample.

What To Think About

Your doctor may ask you to avoid ejaculation for 5 days prior to this test. This allows prostatic fluid to build up and prevents an increase in the number of white blood cells in the prostate fluid, which could interfere with test results.

The results of the test may help show which type of prostatitis is causing your symptoms. But this test often fails to provide conclusive evidence of the cause of symptoms.

Complete the medical test information form (PDF)(What is a PDF document?) to help you prepare for this test.

Other Works Consulted

  • Nickel JC (2007). Inflammatory conditions of the male genitourinary tract: Prostatitis and related conditions, orchitis, and epididymitis. In AJ Wein et al., eds., Campbell-Walsh Urology, 9th ed., vol. 1, pp. 304–329. Philadelphia: Saunders Elsevier.

  • Shoskes DA, et al. (2003). Long-term results of multimodal therapy for chronic prostatitis/chronic pelvic pain syndrome. Journal of Urology, 169(4): 1406–1410.

By Healthwise Staff
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer J. Curtis Nickel, MD, FRCSC - Urology
Last Revised December 3, 2011

WebMD Medical Reference from Healthwise

Last Updated: December 03, 2011
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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