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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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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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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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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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Synovial Fluid Analysis

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Joint pain, redness, or swelling? Examining synovial fluid, which surrounds and lubricates your joints, may reveal what is causing the problem.
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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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Gout Testing

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Gout is a common form of arthritis that causes episodes of intense pain and swelling in the joints. Learn more about tests that are used to diagnose gout.
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CK-MB (Creatine Kinase-MB) Test

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Creatine kinase-MB (CK-MB) is one form of the enzyme creatine kinase (CK), an enzyme found primarily in heart muscle cells. The CK-MB test may help diagnose a heart attack if a troponin test is not available.
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