HealthWise KnowledgeBase
Aspartate Aminotransferase (AST)
What Affects the Test
Reasons you may not be able to have the test or why the results may not be helpful include:
- Taking medicines. Talk with your doctor about all the prescription and nonprescription medicines you are taking. You may be instructed to stop taking your medicines for several days before the test.
- Taking large doses of vitamin A.
- Taking some Reference herbs and natural products, such as echinacea and valerian.
- Injury to a muscle.
- Recent Reference cardiac catheterization Opens New Window or surgery.
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