The high end of the reference range is referred to as the upper limit of normal (ULN). The blood is tested and the results are sent to the doctor for further analysis. At times the AST test results can be lower than the normal range and that is also considered as a normal condition. The AST/ALT ratio is typically > 1 in alcoholic liver disease and AST/ALT < 1 in non-alcoholic liver disease. No special or specific preparations are needed for this blood test unless mentioned by the doctor in advance (which may not happen in almost all the cases). The liver plays a key role in carbohydrate metabolism by helping maintain concentration of blood glucose within the normal range. Heart problems or pancreatitis can also be a reason behind the high values of AST tests. This action, called emulsification, greatly increases the total surface area of the fatty substance. Bile is a yellowish-green liquid continuously secreted from hepatic cells. (adsbygoogle = window.adsbygoogle || []).push({}); (adsbygoogle = window.adsbygoogle || []).push({ The liver’s effects on lipid metabolism include oxidizing (breaking down) fatty acids at an especially high rate; synthesizing lipoproteins, phospholipids, and cholesterol; and converting excess portions of carbohydrate molecules into fat molecules. It may also be done during the treatment to understand the effectiveness of the treatment. AST often varies between normal and slightly increased with chronic hepatitis, so the test may be ordered frequently to determine the pattern. Your liver is partially surrounded by the ribs, and extends from the level of the fifth intercostal space to the lower margin of the right rib cage, which protects this highly vascular organ from blows that could rupture it. Hemolysis during collection or refrigeration of unseparated blood may cause an artefactual increase in AST. The lab technician collects a sample of blood from either the veins in your arms or hands with a needle into a tube. 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. It is always advisable to consult a medical practitioner who will explain to you the meaning of your result. These ranges are established for adult men and may differ with women and children. Some nutrients must be changed (metabolized) in the liver before they can be used for energy or to build and repair body tissues. AST is short for aspartate aminotransferase is also called SGOT (Serum Glutamic-Oxaloacetic Transaminase) or GOT (Glutamic-Oxaloacetic Transaminase), which is an enzyme found throughout your body but mostly in your heart and liver and to a lesser extent, in the kidneys and muscles. Your exact range may depend on which lab your doctor uses. Approach your health care provider to better understand the causes of the values of AST and to further know if any more tests are needed, what treatment may be needed if any and any lifestyle and diet changes to be followed for betterment. Be sure to tell your healthcare practitioner about all of the drugs and/or health supplements that you are taking. What Is Ferritin Blood Test And Why Is It Done? After a thorough physical exam and evaluation of a person’s medical history, there are several other tests that may be performed as follow up depending on what is suspected to be the cause of liver damage. Although the normal range of AST and ALT level varies among laboratories and countries, the ratio of AST:ALT is key when it comes to diagnosing liver diseases. Of these, bile salts are the most abundant and are the only bile components that have a digestive function. Normal. Sometimes the AST test result may show the values lower and it has been noticed that no medical concerns are associated with that which means that there is no health problem. 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. Higher-than-normal AST levels can be caused by: Chronic (ongoing) hepatitis;

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