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 #

T3 UPTAKE

Test Code
LAB7943


CPT Codes
84479

Preferred Specimen
1 Gold tube (SST)


Minimum Volume
0.2 mL (1 mL optimal)


Other Acceptable Specimens
1 Green tube (Lithium Heparin)


OR


 


Instructions
Centrifuge for complete separation of serum or plasma from red cells WITHIN 2 HOURS. If testing cannot be completed within 48 hours, freeze.


Transport Container
Transfer tube


Transport Temperature
Refrigerate or freeze


Specimen Stability
  • 15-30°C up to 8 hours
  • 2-8°C up to 2 days
  • Frozen samples are stable


Setup Schedule
M, T, W, Th, F, Sa, Su

As received; STAT testing not available


Reference Range
32.0 - 48.4%


Clinical Significance
Measures the thyroxine binding capacity of proteins in the blood and provides a measure of the available thyroxine binding sites. 


Performing Laboratory
Alverno Central Lab



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.