The liver is a vital organ that carries out many of the body’s essential functions. These include regulating blood pressure, fighting infections and detoxification of your blood. A healthy liver is a healthy body. The key components being tested here are: Alanine Transaminase, Albumin, Alkaline Phosphate, Aspartate Aminotransferase, Gamma Glutamyl Transferase, Globulin, Total Bilirubin, Total Protein.