Sgot vs sgpt
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aminotransferases liver tests
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Merck Manual aminotransferase AST ALT interpretation
SGOT vs SGPT
| Older name | Current name | Main location | What a high value can suggest |
|---|---|---|---|
| SGOT | AST - aspartate aminotransferase | Liver, but also skeletal muscle, heart, red blood cells, kidneys | Liver injury or a non-liver source such as muscle injury/exercise |
| SGPT | ALT - alanine aminotransferase | Predominantly liver cells | More specific indicator of liver-cell injury |
Both are intracellular enzymes. When hepatocytes are injured, AST and ALT can leak into blood. - Tintinalli's Emergency Medicine, laboratory evaluation section
Practical interpretation
- ALT/SGPT is usually more liver-specific.
- AST/SGOT is less specific because it is also present in muscle and other tissues. A raised AST alone can occur after strenuous exercise, muscle disease/injury, hemolysis, and sometimes heart injury.
- In many liver disorders, AST:ALT is <1.
- An AST:ALT ratio >2 is classically associated with alcohol-related liver disease, but it does not diagnose alcohol-related disease on its own. Merck's liver-test overview
Important
These tests show cell injury, not necessarily how well the liver is functioning. For liver function and severity, clinicians also consider bilirubin, albumin, INR/PT, alkaline phosphatase, GGT, symptoms, medicines/supplements, alcohol intake, and sometimes ultrasound.
Reference ranges vary by lab. If you share the AST, ALT, alkaline phosphatase, bilirubin values, and lab reference ranges, I can help explain the pattern.
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