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Streptococcal screen

Contents of this page:

Illustrations

Throat anatomy
Throat anatomy
Throat swabs
Throat swabs

Alternative Names    Return to top

Rapid strep test

Definition    Return to top

A streptococcal screen is a test to detect group A streptococcus, the most common cause of strep throat.

How the Test is Performed    Return to top

The test requires a throat swab. It takes about 7 minutes. The swab is tested to identify group A streptococcus.

How to Prepare for the Test    Return to top

There is no special preparation. Inform the health care provider if you are taking, or have recently taken, antibiotics.

How the Test Will Feel    Return to top

Your throat will be swabbed in the area of the tonsils. This may make you gag.

Why the Test is Performed    Return to top

The test is performed when the doctor suspects strep throat or if you have symptoms of pharyngitis (sore throat).

Normal Results    Return to top

Group A streptococcus is not present.

What Abnormal Results Mean    Return to top

Group A streptococcus is present (confirms strep throat).

Risks    Return to top

There are no risks.

Considerations    Return to top

This test screens for the group A streptococcus organism only and will not detect other causes of sore throat.

Update Date: 9/3/2008

Updated by: D. Scott Smith, M.D., MSc, DTM&H, Chief of Infectious Disease & Geographic Medicine, Kaiser Redwood City, CA & Adjunct Assistant Professor, Stanford University.  Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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