All tests · Liver Function (LFTs)
Liver Function (LFTs)
Normal range 10-40 U/L (0.17-0.67 µkat/L SI). Specimen: Serum.
Also known as: SGOT, aspartate transaminase.
Combined adult band. LabVals does not publish separate men's, women's, or pediatric ranges for Aspartate Aminotransferase (AST); those can be narrower than the band shown.
| Specimen | Serum |
|---|---|
| Conventional range | 10-40 U/L |
| SI range | 0.17-0.67 µkat/L |
| Conversion factor | ×0.0167 (conventional → SI) |
| Panel | Liver Function (LFTs) |
Convert any Aspartate Aminotransferase (AST) result between units on the unit converter.
The standard teaching reference range for Aspartate Aminotransferase (AST) is 10-40 U/L in conventional units, or 0.17-0.67 µkat/L in SI units. This value is measured in serum.
Source: Adult reference values compiled from Pagana & Pagana, Mosby's Diagnostic and Laboratory Test Reference, and Fischbach & Dunning, A Manual of Laboratory and Diagnostic Tests. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
Above the range
What causes a high Aspartate Aminotransferase (AST)? Read as its own page
Below the range
What causes a low Aspartate Aminotransferase (AST)? Read as its own page
At the bedside
You have the Aspartate Aminotransferase (AST) range. Premium unlocks the 9-card Liver Function (LFTs) flashcard deck with mastery tracking, study sheets that put several panels on one printable page, and unlimited practice across all 440 quiz questions - the free round stops at 10 a day.
Same panel