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Streptococcal screen
Definition

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

Alternative Names

Rapid strep test

How the test is performed

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

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

How the test will feel

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

Why the test is performed

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

Normal Values

Group A streptococcus is not present.

What abnormal results mean

Group A streptococcus is present (confirms strep throat).

What the risks are

There are no risks.

Special considerations

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

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Review date: November 12, 2007
Reviewed by: Arnold L. Lentnek, M.D., Division of Infectious Disease, Kennestone Hospital, Marietta, GA. Review provided by VeriMed Healthcare Network.

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