8 Loeb et al. Development of Minimum Criteria for the Initiation of Antibiotics in Residents of Long-Term-Care Facilities: Results of a Consensus Conference. Inf Con Hosp Epi 2001;22:120-124. 9 Orr P, Nicolle LE, Duckworth H, et al.
1 The blood tests most frequently used for liver disease are the aminotransferases (alanine aminotransferase or ALT and aspartate aminotransferase or AST). 2  Normal levels of ALT ranges from about 7-56 units/liter, and 10-40units/liters for AST. The blood tests most frequently used for liver disease are the aminotransferases (alanine aminotransferase or ALT and aspartate aminotransferase or AST). 2  Normal levels of ALT ranges from about 7-56 units/liter, and 10-40units/liters for AST.
AST is the abbreviation for aspartate aminotransferase, which is an enzyme that is commonly found in the liver, heart and muscles. blood test that reveals a high AST level does not necessarily imply that there is liver disease present. In fact, AST levels can become elevated after strenuous exercise and as a result of pregnancy.