Thyroxine, Free, Index, Serum or Plasma

Message
This test is discontinued and obsolete. FT4 is an appropriate replacement test for patient evalatuion. 


Test Code
FTI


CPT Codes
84436, 84479



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.