There are number of blood tests that reflect the condition of liver. Serum alanine aminotransferase (ALT) is one of the important and sensitive indicator of injury to liver cells although raised values can be caused by diseases unrelated to the liver. There is a tendency amongst clinicians to consider a raised serum alanine aminotransferase synonymous with a viral hepatitis, acute or chronic but there are a large number of unusually or frequently overlooked causes of raised serum alanine aminotransferase in addition to viral hepatitis. It is very important to consider these uncommon causes...