Serum Glutamic Oxaloacetic Transaminase

SGOT Full Form in English, letter by letter

SGOT is Serum Glutamic Oxaloacetic Transaminase, the older name of the liver enzyme AST, measured in liver function tests.

SGOT Full Form in Indian Languages

SGOT, Serum Glutamic Oxaloacetic Transaminase, is the older name of the enzyme that lab reports now call AST. Its name in six Indian languages follows, with what the test measures and why doctors read it together with ALT.

An old name on a modern report

SGOT is an enzyme that moves amino groups between molecules inside cells. Modern naming replaced it with aspartate aminotransferase, AST, and its partner SGPT became alanine aminotransferase, ALT. Indian labs often print both names, so a bill that says SGOT and a report that says AST describe the same test.

AST is found in the liver, heart, skeletal muscle, kidneys and red blood cells. When these cells are damaged, AST leaks into the blood. A raised value therefore says that something is being damaged, but needs ALT and other tests to say where.

Normal ranges and what moves the number

Most Indian laboratories quote roughly 10 to 40 units per litre, with small differences between labs and a slightly higher range in men. Each lab prints its own range on the report, and that is the one to use.

AST has a half-life of about 17 hours, so it rises soon after an injury and falls within days once the cause stops. Heavy drinking, a heart attack, muscle injury, hepatitis and some medicines raise it, and a blood sample in which cells have burst can show a falsely high value.

The test needs no special preparation, although hard exercise just before can raise AST a little, so doctors sometimes repeat it after rest. In pregnancy, a sharp rise together with high blood pressure can point to pre-eclampsia or HELLP syndrome, which needs urgent care.

Units matter when you compare reports. Most Indian labs report AST in U/L, but a few use other units or methods, so a report from one lab should be read against its own range and not against the range printed by another lab.

Reading AST together with ALT

Doctors rarely read AST alone. The AST to ALT ratio, called the De Ritis ratio, helps: a ratio above about 2 points towards alcohol-related liver disease, while a ratio below 1 fits viral hepatitis and fatty liver. ALT is more concentrated in the liver, so it is the more liver-specific signal.

A warning about fatty liver. In non-alcoholic fatty liver, now common in Indian cities, both enzymes can be normal even when fat is present. A normal AST does not rule out liver disease. An ultrasound and a look at weight, sugar and cholesterol say more than the number alone.

Why Indian doctors order it

Annual health packages in India nearly always include a liver function test with AST and ALT, because fatty liver has grown alongside diabetes and obesity. Doctors also check it in patients on anti-tuberculosis treatment, since isoniazid, rifampicin and pyrazinamide can injure the liver. Tests are done before treatment and repeated if jaundice, nausea or pain in the upper right abdomen appears.

Alcohol, paracetamol overdose, some cholesterol medicines and certain herbal preparations are other familiar causes of a raised AST. When the rise is small, doctors usually repeat the test, review medicines and alcohol, and investigate further only if it stays high.

What to do with an abnormal result

Do not panic and do not self-treat. Repeat the test after a few days of rest, avoiding alcohol and any unnecessary medicines, including herbal products. Show your doctor the list of everything you take, including painkillers and supplements, because the cause is often a medicine.

If the value stays high, the doctor may add tests such as bilirubin, alkaline phosphatase and GGT, hepatitis B surface antigen (HBsAg) and hepatitis C antibody (HCV) tests, and an ultrasound of the abdomen (USG). A very high result with yellow eyes, dark urine, vomiting or confusion is an emergency, and the patient should go to hospital at once. A high AST with chest pain needs an immediate heart evaluation.

If your SGOT is a little high, the next steps are usually a repeat test, a look at medicines and alcohol, and a reading of ALT beside it. One number on its own is rarely a diagnosis.

SGOT Full Form: Common Questions