Test Code 1003
Test Details
Alanine Aminotransferase (ALT)
ALT is an enzyme that has been reported as present in a variety of tissues. The liver is the major source of ALT.
Methodology
Enzymatic
Patient Preparation
None
Preferred Specimen
1.0 mL serum (0.5 mL minimum) collected in serum separator tube (SST/Tiger Top)
Alternate Specimen
1.0 mL EDTA plasma (0.5 mL minimum) collected in plasma separator tube (Pearl Top)
Transport Temperature
Refrigerated (ship on frozen cold packs)
Stability
Refrigerated: 7 days
Lab Values
Alanine Aminotransferase (ALT)
- Optimal/normal: <40 U/L
- Borderline: 40-120 U/L
- Increased Risk: >120 U/L
- Alert: >240 U/L
Clinical Significance
Alanine Aminotransferase (ALT)
Elevated serum levels indicate liver damage or dysfunction.
Treatment Options
Alanine Aminotransferase (ALT)
- Treatment is based on cause of elevation.
- Consider additional diagnostic tests as indicated.
