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Test Name

Thyroid Panel

CPT Code(s)

84436, 84479

Includes

T3 Uptake, T4 (Thyroxine), Total; Free T4 Index (T7)

Methodology

Immunoassay (IA)

Reference Range(s)

T3 Uptake 22-35 %
T4 (Thyroxine), Total 4.5-12.0 mcg/dL
Free T4 Index (T7) 1.4-3.8

Clinical Significance

For diagnosis of hypothyroidism and hyperthyroidism.

To view specimen requirements and codes please Select a regional laboratory.

Not sure which laboratory serves your office? Call us 866-MYQUEST (866-697-8378)

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

174F
7020X
7020
7020
7020
7020
174F
7020
174F
7020X
34107
7020
7020
7020
3230
7020
7020
6582
7020
7020
7020
174F
7020X
174F
7020X
475
7020
975
7925
7020
Thyroid Panel
7020