Liver blood tests are used to check normal, elevated (high), and low blood levels of liver enzymes (AST and ALT or aminotransferases). Symptoms of elevated levels of liver enzymes are fever, abdominal pain, poor appetite, and nausea. Drugs, for example, acetaminophen (Tylenol), pain drugs, and statins caused high levels of liver enzymes.
The normal range of values for AST (SGOT) is about 5 to 40 units per liter of serum (the liquid part of the blood). The normal range of values for ALT (SGPT) is about 7 to 56 units per liter of serum. However, the ranges of AST and ALT numbers may differ slightly depending on the technique and protocols used by different laboratories worldwide.
Normal ranges for ALT liver tests are 7 to 55 units per liter and 8 to 48 units per liter for AST, states Mayo Clinic. These ranges are established for adult men and may differ with women and children. Normal ranges may also vary depending on the laboratory.
Liver function tests are nothing but blood tests that help in diagnosing any damage or disease in the liver. The normal levels of the liver function test are 7-56 units/liter for ALT and 10-40units/liters is the range for AST. You can also find the normal range chart of liver function tests in this article.
The normal range for the ALT blood test is usually reported between 5-55 units per liter. The AST blood test has a normal range of 10-40 units per liter. Every laboratory has its own normal range, however, so certain results that fall outside of these reported norms may still be considered a “normal” result by some medical providers.
Liver function tests check the levels of certain enzymes and proteins in your blood. Levels that are higher or lower than normal can indicate liver problems. Some common liver function tests include: Alanine transaminase (ALT). ALT is an enzyme found in the liver that helps convert proteins into energy for the liver cells.
AST is often performed together with the ALT test or as part of a liver panel. For more about AST results in relation to other liver tests, see the Liver Panel article. In most types of liver disease, the ALT level is higher than AST and the AST/ALT ratio will be low (less than 1).
The normal range of values for AST (SGOT) is from 5 to 40 units per liter of serum (the liquid part of the blood). The normal range of values for ALT (SGPT) is from 7 to 56 units per liter of serum. AST and ALT signal damage or disease in the liver, but higher than normal levels of these enzymes do not always indicate liver disease.
Liver function tests values, results, panel or normal ranges could be measure to know how well the liver performing.Liver function test values are figure that indicate the present performance of liver. Liver problems can be simply detected when the result of the individuals liver function tests are found increased or decreased from normal value.
Liver enzymes are substances produced by the liver that can be measured with a blood test. Any elevation in an enzyme level may be a sign of a liver problem, and aspartate aminotransferase (AST) and alanine aminotransferase (ALT) are two of the enzymes central to such an investigation. When used comparatively, AST and ALT can help identify liver toxicity, liver disease, or liver damage.