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The Harvard Medical School Family Health Guide

Diagnostic Tests - Throat Culture
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Throat Culture

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What is the test?

A throat infection with streptococcus bacteria (called strep throat) needs to be treated with an antibiotic. A throat culture is the traditional test used for identifying streptococcus bacteria on your throat surface. Throat cultures also can identify some other bacteria that can cause sore throat.

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How do I prepare for the test?

No preparation is necessary.

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What happens when the test is performed?

A cotton swab is rubbed against the back of your throat to gather a sample of mucus. This takes only a second or two and makes some people feel a brief gagging or choking sensation. The mucus sample is then placed on a culture plate that helps any bacteria present in the mucus grow, so they can be examined and identified.

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What risks are there from the test?

There are no risks.

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Must I do anything special after the test is over?

No.

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How long is it before the result of the test is known?

Results from a strep culture are available in two or three days.

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Answer health care questions about medical tests in this special report
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Medical Tests: A Practical Guide to Common Tests

Are you the type of person who panics when sent for even the most routine medical test? Medical Tests: A Practical Guide to Common Tests provides you with information about common screening and diagnostic medical tests so that you can breathe easier. You’ll learn why the test is needed, how to prepare for it, what happens during the test, and so much more. Now you can go in prepared!. Read more



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