Streptococcal screen

Alternative Names: Rapid strep test

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

Why is the Test Performed?

Your health care provider may order this test if you have signs of strep throat or if you have symptoms of pharyngitis (sore throat).

How is the Test Performed?

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

Preparation for the Test

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

How will the Test Feel?

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

Streptococcal screen Risks

There are no risks.

Considerations

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

Normal Results for Streptococcal screen

The test is considered normal if Group A streptococcus is not present.

What Abnormal Results Mean

An abnormal result means Group A streptococcus is present, and confirms strep throat.

Throat anatomy	Throat swabs

Review Date: 5/9/2010
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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