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Common causes of a low Alanine Aminotransferase (ALT)
- Vitamin B6 deficiency (rare)
Looking for the other direction? See what causes a high Alanine Aminotransferase (ALT).
All tests · Liver Function (LFTs) · Alanine Aminotransferase (ALT)
Below the range
What causes a low Alanine Aminotransferase (ALT)?
Normal range 7-56 U/L (0.12-0.93 µkat/L SI). Specimen: Serum. See the full Alanine Aminotransferase (ALT) reference page for critical values and nursing considerations.
What is the normal range for Alanine Aminotransferase (ALT)?
The standard teaching reference range for Alanine Aminotransferase (ALT) is 7-56 U/L in conventional units, or 0.12-0.93 µkat/L in SI units. This value is measured in serum.
| Specimen | Serum |
|---|---|
| Conventional range | 7-56 U/L |
| SI range | 0.12-0.93 µkat/L |
| Panel | Liver Function (LFTs) |
Full details, including nursing considerations, on the Alanine Aminotransferase (ALT) normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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