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Alanine aminotransferase, or ALT, is an enzyme found concentrated in the liver and in small amounts in the kidneys and the heart, states WebMD. An ALT test checks the blood for this enzyme, as its presence indicates potential liver damage. The enzyme's former name was s...


According to WebMD, ALT, also known as alanine aminotransferase, is an enzyme present in blood. Previously known as SGPT, or serum glutamic pyruvic transaminase, it is released by a damaged or diseased liver. As such, high levels of ALT are usually a sign of liver damag...


The ALT test checks the level of alanine aminotransferase in the blood to see if the liver is healthy. Elevated levels of the enzyme could indicate damage caused by trauma or a disease process, such as cirrhosis or a strain of hepatitis, as stated by WebMD.


Low ALT/SGPT means that there are normal levels of the liver enzyme alanine aminotransferase, or ALT, in the blood, which indicates that there is no disease or damage to the liver, according to WebMD. ALT used to be called SGPT, or serum glutamic pyruvic transaminase.


A high serum glutamic pyruvic transaminase (SGPT) test indicates some degree of liver damage. SGPT enters the bloodstream following an injury to the liver.


Low SGPT is normally found in the blood and it often indicates a healthy liver. SGPT is now also called Alanine Aminotransferase, or “ALT.” A test for ALT measures how much damage is in a liver.


SGPT, or serum glutamic pyruvic transaminase, is an enzyme that enters the blood when the heart or liver are damaged, according to MedicineNet. When a condition like hepatitis C causes damage to the liver, SGPT levels rise.