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 #

T4, FREE

Message
CHEMISTRY


Test Code
T4, FREE


Alias/See Also
THYROXINE, FREE, FREE THRYROXINE(T4), FT4


Preferred Specimen
SERUM


Minimum Volume
2mLs


Instructions
DRAW 1 GOLD TOP SST TUBE, LET CLOT FOR 30 MINUTES, AND SPIN DOWN.


Transport Container
ORIGINAL TUBE


Transport Temperature
REFRIGERATED


Specimen Stability
Room temperature: 24 hours. Separate if not tested within this time.
Refrigerated (2-8°C): 6 days
Frozen (-10°C or colder): 6 days


Methodology
Chemiluminescent microparticle immunoassay

Setup Schedule
DAILY


Report Available
DAILY


Reference Range
0.6 - 1.6 ng/dL


Clinical Significance
For diagnosis of hypothyroidism and hyperthyroidism.


Performing Laboratory
WHITE RIVER JUNCTION VT VA- CHEMISTRY 802-295-9363 EXT: 5518, 5519



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.