The flu is a respiratory illness triggered by infection with an influenza virus. Our guide explains the types of flu tests and when and how they may be used.
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Wondering how food allergies are diagnosed? Learn about how food allergies are different from intolerances and the tests that can help identify food allergies.
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Learn about discussing your testing options with your health care provider to make informed choices to improve your care.
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Have questions about laboratory testing? We're here to help you understand your tests and what results might mean for you.
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