Questions and Answers: Understanding the Alanine Aminotransferase (ALT) Test

The ALT test is used to assess liver function and to diagnose liver diseases or damage.

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The ALT test involves a simple blood draw, where a small sample of your blood is taken and sent to the laboratory for analysis.

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The ALT test measures the levels of ALT, an enzyme found primarily in the liver cells. Elevated levels may indicate liver damage or disease.

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Normal ALT levels are typically between 10 and 40 units per liter (U/L) for men and 7 to 35 U/L for women.

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Elevated ALT levels can be caused by various factors, including liver diseases, such as hepatitis or cirrhosis, alcohol abuse, certain medications, and obesity.

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Symptoms of high ALT levels may include fatigue, jaundice (yellowing of the skin and eyes), abdominal pain, and dark urine.

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Elevated ALT levels can indicate liver damage or disease, which can lead to complications such as liver failure, liver cancer, or cirrhosis if left untreated.

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Typically, no special preparation is required for the ALT test. However, it is always best to follow any specific instructions given by your healthcare provider.

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