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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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Acidosis and Alkalosis

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The body usually maintains its acid-base balance, but sometimes things go wrong. Acidosis is when body fluids are too acidic, and alkalosis occurs when body fluids are too alkaline.
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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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Electrolytes and Anion Gap Test

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An electrolyte panel and anion gap test measures important minerals that allow the body to regulate fluids and control its acid-base balance.
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Editorial Policy

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The mission of Testing.com is to provide a comprehensive, accurate, dynamic, and up-to-date website to inform the public about laboratory testing. The scientific content is developed and updated in accordance with established editorial policies.
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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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