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Thyroid Panel
Test Code7020
CPT Codes
84436, 84479
Includes
T3 Uptake,
T4 (Thyroxine) Total
Free T4 Index (T7)
T4 (Thyroxine) Total
Free T4 Index (T7)
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plasma collected in: Sodium heparin (green-top) or lithium heparin (green-top) tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Mon-Sat; Report available: 1-2 days
Clinical Significance
For diagnosis of hypothyroidism and hyperthyroidism.
