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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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Lactate Test

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Explains how the lactate test is used, when a lactate test is ordered, and what the results of a lactate test might mean. The lactate test is primarily ordered to help determine if someone has lactic acidosis, a level of lactate that is high enough to disrupt a person's acid-base (ph) balance.
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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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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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Carbamazepine

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Describes how a carbamazepine test is used to determine the concentration of carbamazepine in the blood to establish an appropriate dose and maintain a therapeutic level
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Adrenocorticotropic Hormone (ACTH) Test

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ACTH (adrenocorticotropic hormone) blood tests are used, usually in conjunction with cortisol tests, to help detect, diagnose, and monitor conditions associated with excessive or deficient cortisol in the body, such as Cushing disease, Cushing syndrome, Addison disease, secondary adrenal insufficiency, and hypopituitarism.
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