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Source-backed patient guide
AST is an enzyme found in the liver and other tissues and is commonly measured as part of a liver panel.
These operational details come from the laboratory catalogue. Confirm current availability and preparation with the laboratory before collection.
Patient education
AST is an enzyme found in the liver and other tissues and is commonly measured as part of a liver panel.
It may be requested with ALT and other measurements when evaluating or monitoring liver health; AST alone does not identify a specific cause.
Preparation depends on the test and any other tests ordered at the same time. Follow the instructions from the requesting professional and laboratory, tell them about medicines and supplements, and do not stop medicines unless a qualified professional tells you to.
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