Why do I need an AST blood test?You may get an AST blood test as part of your routine checkup or if you have symptoms of liver damage. These may include:Nausea and vomitingWeight lossTirednessWeaknessJaundice, a condition that causes your skin and eyes to turn yellowSwelling and/or pain in your abdomenSwelling in your ankles and legsDark-colored urine and/or light-colored stoolFrequent itchingEven if you don't have symptoms, your health care provider may order an AST blood test if you are at a higher risk of liver disease. Risk factors for liver disease include:A family history of liver diseaseHeavy drinkingObesityDiabetesTaking certain medicines that can cause liver damage
