Finding the right tests…
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Finding the right tests…
Biochemistry
SGOT is the older name for AST, an enzyme your body uses in normal chemical reactions inside cells. Unlike its liver-panel partner ALT, AST isn't liver-specific — it's also found in your heart muscle and skeletal muscle, so a raised level doesn't automatically mean a liver problem. That's actually why a doctor sometimes orders SGOT on its own rather than as part of a full liver panel: to check for muscle injury, to follow recovery after strenuous exercise or a muscle-related illness, or as one piece of a cardiac workup. Reading it next to ALT, rather than alone, is usually what turns a raised SGOT into a useful clue about which tissue is involved.
The test reports AST concentration in your blood, in units per litre. Because AST comes from the liver, heart, and skeletal muscle, a raised result on its own only tells your doctor that cells somewhere in one of those tissues are leaking enzyme into the blood — not which tissue. Comparing it with ALT, which is far more liver-specific, is what usually narrows that down: a raised AST with a normal ALT points away from the liver and toward muscle or heart, while both being raised together points more toward the liver.
A typical adult normal range runs from about 8 to 33 U/L, though individual labs set their own cutoffs. Because AST isn't confined to the liver, several things outside liver disease can raise it — a recent hard workout, a muscle injury, or an intramuscular injection can all push AST up temporarily without any liver problem behind it. This is part of why a single raised SGOT result isn't treated as a diagnosis; it's a starting point for asking which tissue it came from.
When SGOT is ordered on its own rather than inside a full liver panel, it's often to investigate exactly that muscle-versus-liver question, or as part of working up chest pain, since damaged heart muscle also releases AST into the blood. Comparing AST with ALT is the most direct way to separate a liver source from a muscle or heart source, since ALT stays close to the liver specifically.
No special preparation is needed for this test on its own. Strenuous exercise in the day or two beforehand can raise your result temporarily, so mention any recent hard physical activity to whoever is interpreting it. The sample is a routine blood draw from a vein.
Yes. SGOT (serum glutamic-oxaloacetic transaminase) is the older name for the same enzyme now more commonly called AST (aspartate aminotransferase).
Roughly 8 to 33 U/L for adults, though the exact range on your report may vary slightly by lab.
Because AST isn't specific to the liver — it's also found in heart and skeletal muscle — doctors sometimes order it alone to investigate muscle injury or as part of a cardiac workup, rather than a liver question.
Yes. Strenuous exercise shortly before the test can temporarily raise AST, since muscle tissue releases the same enzyme the liver does.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
It leans away from the liver and toward muscle or heart tissue as the source, since ALT is far more liver-specific than AST.
No special preparation applies to SGOT on its own. If it's combined with other tests, check whether any of those need fasting.