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
Green Top Tube
(Lithium Heparin plasma separator tube with gel)
Alternate Specimen
None
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.
