Liver cells responding to the hormone insulin lower the blood glucose level by polymerizing glucose to glycogen. An abnormal test result does not necessarily mean that you have a problem, it may also depend on the laboratory and other factors. This is true of both prescription drugs and some “natural” health products. Your email address will not be published. The liver plays a key role in carbohydrate metabolism by helping maintain concentration of blood glucose within the normal range. Sometimes AST is compared directly to ALT and an AST/ALT ratio is calculated. 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. 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. No specific precaution is to be taken for the test but it’s always suggested to pre-inform the doctor of any medications that you took just before the blood test. Some medications can also cause an abnormal level of AST. (b) Enlarged longitudinal section of a hepatic lobule. For more about AST results in relation to other liver tests, see the Liver Panel article. Bile salts emulsify fats in the small intestine; that is, they break up fatty nutrients into tiny particles, just as dish detergent breaks up a pool of fat drippings in a roasting pan. Your liver helps to process your body’s nutrients, manufactures bile to help digest fats, produces many important proteins such as blood clotting factors, and breaks down potentially toxic substances into harmless ones that the body can use or excrete. At times the AST test results can be lower than the normal range and that is also considered as a normal condition. This action, called emulsification, greatly increases the total surface area of the fatty substance. Other liver functions concern protein metabolism. AST at times can be done as a part of a routine health examination. Fat-splitting enzymes (lipases) can then digest the fat molecules more effectively. AST may also increase after heart attacks and with muscle injury, usually to a much greater degree than ALT. Conditions that affect other organs, such as the heart and skeletal muscle, can cause elevations of AST. Sudheendra is a passionate blogger for 8 years and holds a Degree in Journalism & Mass Communications. Some of these may include: AST may also be ordered, either by itself or with other tests, for people who are at an increased risk for liver disease since many people with mild liver damage will have no signs or symptoms. In addition to water, bile contains bile salts, bile pigments (bilirubin and biliverdin), cholesterol, and electrolytes. These smaller particles are more accessible to digestive enzymes from the pancreas. Processes fats and amino acids and stores certain vitamins. This result is typical for adult men. 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. Normal ranges may also vary depending on the laboratory. The high end of the reference range is referred to as the upper limit of normal (ULN). Some of the symptoms associated may include but not limited to; AST test is also included with some other tests, in the cases where the person has a great risk of liver disease. Abnormal or high values of the AST blood test may be due to any reason like hepatitis, mononucleosis, cirrhosis, or any other liver diseases. AST and ALT (alanine aminotransferase) are considered to be two of the most important tests to detect liver injury, although ALT (alanine aminotransferase) is more specific for the liver than is AST and is more commonly increased than is AST. AST and ALT are measured in international units per liter (IU/L). AST blood test normal range: Normal AST is less than 42U/L [units per liter] (range 8 to 48 U/L). For him, everything that interlinks and relates to health & medical world entices him. AST blood test is often ordered in conjunction with another liver enzyme, alanine aminotransferase (ALT), or as part of a liver panel or comprehensive metabolic panel to screen for and/or help diagnose liver disorders. What Does Alanine Aminotransferase (ALT) Blood Test Mean? It secretes bile into the intestines to help absorb nutrients (especially fats). Sometimes AST may be used to monitor people who are taking medications that are potentially toxic to the liver. With some liver diseases, the … What Is Blood Differential Test And What Does Abnormal Results Mean? That is, bile salts break fat globules into smaller droplets that are more soluble in water. In healthy individuals, levels of AST (aspartate aminotransferase) in the blood are low. Progesterone Levels Chart- High, Low, And Normal Range. 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