Iron
- C1118
Rs 365
Tests Detail
| Observations Included |
| Iron * |
| The Test marked with (*) are in our NABL Scope. |
Sample Report
- Also Known As:
Iron - Formal Name:
AST Serum Glutamic-Oxaloacetic Transaminase SGOT GOT Aspartate Transaminase - Sample Instructions:
When a healthcare practitioner thinks that you have symptoms of a liver disorder, such as abdominal pain, nausea and vomiting, jaundice (yellow skin), or potential exposure to a hepatitis virus; as part of a comprehensive metabolic panel when you have a routine health exam - Test Preparation Needed?
A blood sample drawn from a vein in your arm - What Is Being Tested?
None - How Is It Used?
Aspartate aminotransferase (AST) is an enzyme found in cells throughout the body but mostly in the heart and liver and, to a lesser extent, in the kidneys and muscles. In healthy individuals, levels of AST in the blood are low. When liver or muscle cells are injured, they release AST into the blood. This makes AST a useful test for detecting or monitoring liver damage. The liver is a vital organ located in the upper right-hand side of the abdominal area just beneath the rib cage. It is involved in many important functions in the body. The liver helps to process the 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. A number of conditions can cause injury to liver cells and may cause increases in AST. The test is most useful in detecting liver damage due to hepatitis, drugs toxic to the liver, cirrhosis, or alcoholism. AST, however, is not specific for the liver and may be increased in conditions affecting other parts of the body. An AST test is often performed along with an alanine aminotransferase (ALT) test. Both are enzymes found in the liver that become elevated in the blood when the liver is damaged. A calculated AST/ALT ratio is useful for differentiating between different causes of liver injury and in recognizing when the increased levels may be coming from another source, such as heart or muscle injury. How is the sample collected for testing? A blood sample is drawn by needle from a vein in the arm. Is any test preparation needed to ensure the quality of the sample? No test preparation is needed. - When Is It Ordered
The blood test for aspartate aminotransferase (AST) is usually used to detect liver damage. It is often ordered in conjunction with another liver enzyme, alanine aminotransferase (ALT), or as part of a liver panel or comprehensive metabolic panel (CMP) to screen for and/or help diagnose liver disorders. AST and ALT are considered to be two of the most important tests to detect liver injury, although ALT is more specific for the liver than is AST and is more commonly increased than is AST. Sometimes AST is compared directly to ALT and an AST/ALT ratio is calculated. This ratio may be used to distinguish between different causes of liver damage and to distinguish liver injury from damage to heart or muscle. AST levels are often compared with results of other tests such as alkaline phosphatase (ALP), total protein, and bilirubin to help determine which form of liver disease is present. AST is often measured to monitor treatment of persons with liver disease and may be ordered either by itself or along with other tests for this purpose. Sometimes AST may be used to monitor people who are taking medications that are potentially toxic to the liver. If AST levels increase, then the person may be switched to another medication. - What Does The Test Result Mean?
AST may be ordered as part of a comprehensive metabolic panel (CMP) when someone has a routine health examination. An AST test may be ordered along with several other tests when a person has signs and symptoms of a liver disorder. Some of these may include: Weakness, fatigue Loss of appetite Nausea, vomiting Abdominal swelling and/or pain Jaundice Dark urine, light-colored stool Itching (pruritus) Swelling in the legs and ankles Tendency to bruise easily 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. Some examples include: Persons who might have been exposed to hepatitis viruses Persons who are heavy drinkers Persons who have a history of liver disease in their family Persons taking drugs that can damage the liver Persons who are overweight and/or have diabetes When AST is used to monitor treatment of persons with liver disease, it may be ordered on a regular basis during the course of treatment to determine whether the therapy is effective. - Is There Anything Else I Should Known?
Low levels of AST in the blood are expected and are normal. Very high levels of AST (more than 10 times normal) are usually due to acute hepatitis, sometimes due to a viral infection. With acute hepatitis, AST levels usually stay high for about 1-2 months but can take as long as 3-6 months to return to normal. Levels of AST may also be markedly elevated (often over 100 times normal) as a result of exposure to drugs or other substances that are toxic to the liver as well as in conditions that cause decreased blood flow (ischemia) to the liver. With chronic hepatitis, AST levels are usually not as high, often less than 4 times normal, and are more likely to be normal than are ALT levels. AST often varies between normal and slightly increased with chronic hepatitis, so the test may be ordered frequently to determine the pattern. Such moderate increases may also be seen in other diseases of the liver, especially when the bile ducts are blocked, or with cirrhosis or certain cancers of the liver. AST may also increase after heart attacks and with muscle injury, usually to a much greater degree than ALT. 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). There are a few exceptions; the AST/ALT ratio is usually increased in alcoholic hepatitis, cirrhosis, hepatitis C virus-related chronic liver disease, and in the first day or two of acute hepatitis or injury from bile duct obstruction. With heart or muscle injury, AST is often much higher than ALT (often 3-5 times as high) and levels tend to stay higher than ALT for longer than with liver injury.
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