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Labcorp Oklahoma, Inc.
Test Directory


Index:

Thyroglobulin Panel

Order Name Thyroglob Pnl
Test Number: 3612483
Revision Date 12/22/2023
Test Name Methodology LOINC Code
Thyroglobulin Autoantibody (TG Ab)
Enzyme Immunoassay 8098-6 
Thyroglobulin Level
Immunoassay (IA) 3013-0 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 3 mL (1.8 mL) Serum Clot Activator SST Frozen
Instructions Preferred is Two Aloquots of Serum:
(1)  Allow specimen to clot fully, centrifuge, remove 2mL of Serum and Freeze.
(2) 1 mL Serum kept Refrigerated.
Serum stability: Ambient 8 hours, Refrigerated 3 days, Frozen 2 months

Thyroglobulin by immunoassay is highly susceptible to biotin interference. Patients taking biotin supplements – particularly at high doses – may show falsely low or undetectable thyroglobulin levels. Please consult with lab if biotin interference is suspected.
GENERAL INFORMATION
Testing Schedule Mon-Fri 
Expected TAT 1-4 days from set up  
CPT Code(s) 86800, 84432
Lab Section Chemistry