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St. John Health System
Lab Catalog


Index:

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
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Chemistry