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Labcorp Oklahoma, Inc.
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Alanine Transaminase (ALT)

Order Name ALT
Test Number: 2004850
Revision Date 04/26/2021
Test Name Methodology LOINC Code
Alanine Transaminase (ALT)
Enzymatic 1742-6 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Plasma Lithium Heparin PST (Light Green Top) Refrigerated
Alternate 1 1 mL (0.5) Serum Clot Activator SST Refrigerated
Instructions Specimen Stability: Ambient 3 days, Refrigerated 7 days, Frozen 60 days
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-2 days  
Clinical Use Useful in the diagnosis and treatment of certain liver diseases (viral hepatitis and cirrhosis) and heart disease. 
CPT Code(s) 84460
Lab Section Chemistry