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 Total

Test Code
859


Alias/See Also
1230400549 | LAB7610: Total T3 | QUEST EAP: 859


CPT Codes
84480

Preferred Specimen
1 mL serum collected in a serum separator tube (SST)


Minimum Volume
0.3 mL


Transport Container
Plastic screw-cap vial


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days


Methodology
Immunoassay (IA)

Setup Schedule
Set up: Daily; Report available: Next day


Reference Range
<1 Month Not established
1-23 Months 117-239 ng/dL
2-12 Years 105-207 ng/dL
13-20 Years 86-192 ng/dL
>20 Years 76-181 ng/dL


Clinical Significance
Total T3 measurements are used to diagnose and monitor treatment of hyperthyroidism and are essential for recognizing T3 toxicosis.


Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153


Last Updated: April 21, 2023


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.