Liver function tests are actually blood tests, so it is not possible for a patient to chart his own liver function tests, according to Dr. Sandra Cabot. Many liver function tests actually indicate liver damage rather than provide information about the actual functioning of the liver.
Liver function tests often need to be accompanied by ultrasounds, MRIs or CT scans of the liver or gallbladder to determine the degree of liver disease present, explains Dr. Sandra Cabot. Liver function tests include tests for levels of bilirubin, blood proteins and liver enzymes, including aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase and gamma glutamyl transpeptidase. These enzymes become elevated in the event of liver disease.