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Arthritis Testing

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Arthritis is the leading cause of disability in the United States. Learn about types of arthritis and the role of arthritis testing.
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Laboratory Methods

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Understanding the method used for a test provides a broader context for understanding your test results. Learn about a few common laboratory methods mentioned on this site.
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Hair Follicle Drug Test

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Considering a hair follicle drug test? Learn about how long drugs can be detected in the hair, which drugs can be identified, and how hair testing works.
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Urine Drug Test

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Urine drug tests are the most common method of testing for the use of illegal drugs and the misuse of prescription and over-the-counter medicines.
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Troponin Test (cTN)

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Curious about troponin testing? Troponin is a protein released into the bloodstream after a heart attack or damage to the heart.
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West Nile Virus Test

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West Nile virus causes a viral infection and is transmitted to humans primarily by mosquitoes. Learn about when testing is used and interpreting test results.
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Chlamydia Testing

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Chlamydia is a common STD. Learn more about the purpose of a chlamydia test, what to expect during testing, and how to understand your results.
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Drug Testing

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Drug testing detects evidence of drug use. Learn about types of drug tests, when drug testing is used, and interpreting drug test results.
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