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Influenza Tests

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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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Acetaminophen

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Acetaminophen is a common pain reliever and fever reducer. Lab testing can help determine if a person has taken too much acetaminophen (overdosed) and whether an antidote should be given.
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HIV Viral Load

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HIV viral load testing measures the amount of HIV genetic material in the blood. Learn more about this test and how it’s used to guide treatment for HIV.
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PD-L1

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Some tumor cells have large amounts of PD-L1. A lab test measures how much PD-L1 is present on tumor cells to help guide treatment of certain cancers.
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Opioid Testing

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Getting tested for opioid use? Opioid testing detects evidence of both illegal and prescription opioids. Learn more about opioid testing in our guide.
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At-Home Testing

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At-home tests have surged in popularity, but what are their benefits and downsides? Read about the types of at-home tests and when and how they may be used.
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Psoriatic Arthritis Testing

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Psoriatic arthritis causes symptoms in both the skin and the joints. Learn about tests that may be used to diagnose and manage this chronic disease.
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At-Home Hepatitis C Test

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Looking for information on at-home Hepatitis C testing? Learn about how these tests work, what results may mean, and how to find a quality at-home Hepatitis C test.
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