Alanine Aminotransferase (ALT)

Additional Tests Offered (Per Consultation)

TURN AROUND TIME

2-3 Calendar Days

TEST INFO

SAMPLE INFO

Test Name
Alanine Aminotransferase (ALT)
Alternate Name(s)
  • ALT
Test Description
Alanine Aminotransferase (ALT) measurements are particularly useful in the diagnosis and management of certain liver diseases, e.g., viral hepatitis and cirrhosis. ALT activity in tissue is generally much lower than aspartate aminotransferase (AST) activity and is found in highest concentrations in the liver. Significant elevations of ALT occur only in diseases of the liver. ALT is often measured in conjunction with AST to determine whether the source of the AST is the liver or the heart. ALT is normally not elevated in cases of myocardial infarction, i.e., a normal ALT, in conjunction with an elevated AST, tends to suggest cardiac disease. However, slight elevations of ALT may occur if an infarct destroys a very large volume of heart muscle.
CyberLAB Test Info

Test Name

Test #

ALT

185

Method Description
  • Spectrophotometry(SP)
FDA Cleared / Approved
No
CPT Code(s)
  • 84460
STAT Allowed
No
Draw Status

Living

Pre-Mortem

Sample Volume
Minimum Sample Volume
  • 0.5 mL
Preferred Sample Volume
  • 1 mL
Sample Type
Acceptable
  • Plasma, Lithium Heparin - Green Top Tube
  • Plasma, Sodium Heparin - Green Top Tube
  • Serum - Red Top Tube
Preferred
  • Serum - Red/Gray (Tiger) Top Tube
Sample Stability
  • Ambient - 72 hours
  • Frozen - Unacceptable
  • Refrigerated 2-8°C - 5 days
Transport
Refrigerated
Notes
Centrifuge serum specimens within 1 hour of collection, transfer serum to a sterile, plastic, screw-capped vial.