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Labcorp Oklahoma, Inc.
Test Directory


Index:

Thyroid Stimulating Hormone (TSH)

Order Name TSH
Test Number: 4501925
Revision Date 06/15/2018
Test Name Methodology LOINC Code
Thyroid Stimulating Hormone (TSH)
Chemiluminescence Assay 3016-3 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2 mL (0.5) Serum Clot Activator SST Refrigerated
Alternate 1 2 mL (0.5) Plasma Lithium Heparin PST (Light Green Top) Refrigerated
Instructions Stability: Ambient 1 day. Refrigerated 7 days. Frozen 6 months.
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-3 days  
Clinical Use Useful for thyroid function assessment, screening for a diagnosis of thyroid disease or pituitary dysfunction. 
CPT Code(s) 84443
Lab Section Chemistry