<qa>  What is the name of the test that indicates the presence of acute active liver disease or acute liver4. Presence of acute active liver disease or acute liver injury as indicated by 1 an abnormal liver function test, or 2 clinical andor laboratory signs of acute, active hepatitis A, B, andor C. Subjects with stable, chronic, active hepatitis B or C may be enrolled if the investigator deems them to be appropriate. 