Which of the following is an example of a liver function test?

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Multiple Choice

Which of the following is an example of a liver function test?

Liver function tests look for substances that indicate liver cell injury or how the liver handles processing. Aspartate aminotransferase (AST) is an enzyme present in liver cells and released into the blood when those cells are damaged, so measuring AST is a classic way to assess liver injury as part of an LFT panel. The other options point to functions in other organs or systems: creatinine clearance gauges kidney filtration, hemoglobin A1c reflects long-term glucose control, and creatine kinase indicates muscle injury. Therefore, AST best represents a liver function test.

Liver function tests look for substances that indicate liver cell injury or how the liver handles processing. Aspartate aminotransferase (AST) is an enzyme present in liver cells and released into the blood when those cells are damaged, so measuring AST is a classic way to assess liver injury as part of an LFT panel. The other options point to functions in other organs or systems: creatinine clearance gauges kidney filtration, hemoglobin A1c reflects long-term glucose control, and creatine kinase indicates muscle injury. Therefore, AST best represents a liver function test.

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