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The normal level of liver enzymes for adult men are 7 to 55 units per liter of alanine aminotransferase, or ALT, and 8 to 48 units per liter of aspartate aminotransferase, or AST, notes Mayo Clinic. Normal alkaline phosphatase, or ALP, levels fall between 45 and 115 units per liter.
Alkaline Phosphatase (ALP): It is an enzyme found in the liver, bile ducts and bone. The normal level of ALP in the blood is in the range of 45 to 115 IU per liter. An increase in the level of ALP indicates a liver damage/disease or bone disease.
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. Less common causes are NASH, hepatitis, and alcoholism. </p>
Liver damage or disease may be present even when liver enzyme levels are within normal limits or reference ranges. The Lab Tests Online website reports that liver function tests are not done on just one occasion to make a diagnosis of liver damage or disease 1 .
The liver function test normal values are 7-56 units/liter for ALT and 10-40units/liters is the range for AST. You can also find the liver function normal range chart in this article. The levels of particular enzymes or proteins in the blood are measured using this test.
Aspartate aminotransferase is found in the liver, kidneys, skeletal muscles and heart. People who have had heart attacks, viral hepatitis or acute liver damage often have high levels of this enzyme, according to the Mayo Clinic. The normal range for this enzyme is 10 to 34 international units per liter, according to the MedlinePlus website.
The comprehensive metabolic panel, or chemical screen, (CMP; CPT code 80053) is a panel of 14 blood tests which serves as an initial broad medical screening tool. The CMP provides a rough check of kidney function, liver function, diabetic and parathyroid status, and electrolyte and fluid balance, but this type of screening has its limitations. Abnormal values from a CMP are often the result of false positives and thus the CMP may need to be repeated (or a more specific test performed), requiring a second blood drawing procedure and possibly additional expense for the patient, even though no disease is present. This test is also known as SMA12+2 test. The CMP is an expanded version of the basic metabolic panel (BMP), which does not include liver tests. A CMP (or BMP) can be ordered as part of a routine physical examination, or may be used to monitor a patient with a chronic disease, such as diabetes mellitus or hypertension. Previous names for the panel of tests have been Chem 12, Chemistry panel, Chemistry screen, SMA 12, SMA 20 and SMAC (Sequential Multiple Analysis - Computer). The tests are performed on machines based on the AutoAnalyzer invented in 1957.
Liver function tests (LFTs or LFs), also referred to as a hepatic panel, are groups of blood tests that provide information about the state of a patient's liver. These tests include prothrombin time (PT/INR), aPTT, albumin, bilirubin (direct and indirect), and others. The liver transaminases aspartate transaminase (AST or SGOT) and alanine transaminase (ALT or SGPT) are useful biomarkers of liver injury in a patient with some degree of intact liver function. Most liver diseases cause only mild symptoms initially, but these diseases must be detected early. Hepatic (liver) involvement in some diseases can be of crucial importance. This testing is performed on a patient's blood sample. Some tests are associated with functionality (e.g., albumin), some with cellular integrity (e.g., transaminase), and some with conditions linked to the biliary tract (gamma-glutamyl transferase and alkaline phosphatase). Several biochemical tests are useful in the evaluation and management of patients with hepatic dysfunction. These tests can be used to detect the presence of liver disease, distinguish among different types of liver disorders, gauge the extent of known liver damage, and monitor the response to treatment. Some or all of these measurements are also carried out (usually about twice a year for routine cases) on those individuals taking certain medications, such as anticonvulsants, to ensure that the medications are not adversely impacting the person's liver.