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 #

THYROXINE (T4) FREE, DIRECT, S

Test Code
1974


CPT Codes
84439

Preferred Specimen
serum


Minimum Volume
0.3


Transport Container
"Red-top tube or gel-barrier tube
"


Transport Temperature
"Refrigerate.
"


Specimen Stability
14 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
"Citrate plasma specimen; improper labeling
"


Methodology
"Electrochemiluminescence immunoassay (ECLIA) "



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.