This test assesses liver function and helps detect liver damage by measuring the amount of alanine aminotransferase (ALT) in the blood.
People have a higher risk of liver damage or disease if they:
- Are suffering from obesity or diabetes
- Are taking medicines known to be toxic to the liver
- Are heavy drinkers
- Have been exposed to the hepatitis virus
- Have a history of liver problems.
Why Take the ALT Test?
The ALT test provides insight on liver health, and it may be taken as part of routine exams or when signs of liver dysfunction show. A typical symptom of liver damage is jaundice, which is the yellowish discoloration of the eyes and skin. Other signs include tiredness, loss of appetite, abdominal pain, nausea, and dark urine.
ALT test results usually within 24 hours.
You may be asked not to eat or drink several hours before taking the test.