A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

FREE T3  Serum/Plasma

Test Code
FT3


CPT Codes
84481

Preferred Specimen
Light Green (Lithium) Gel or Gold Top Tube


Specimen Stability
7 days


Clinical Significance
In vitro diagnostic test for the quantitative measurement of Free Triiodothyronine in human serum.  Measurement is useful when total T3 is altered due to changes in thyroid hormone binding proteins.  Elevated levels are seen in hyperthyroidism.




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.