FREE THYROXINE INDEX

Message

This is not an orderable test but is included when T4 and T3Uptake are ordered.
T4 x T3U divide by 100

See individual tests for specimen requirements.

Test Code

FTI

Alias/See Also

FTI;Thyroid

Performed By
Alverno Laboratories

Last Updated: April 25, 2023

The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.