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T3 Total

Test Code
THYROID TOTAL T3


Alias/See Also
T3, Triiodothyronine
Chemistry


Preferred Specimen
Tube Type: SST


Transport Temperature
Refrigerate


Specimen Stability
Refrigerated (2-8°C): 6 days
Frozen (-20°C or colder): 6 days
Avoid multiple freeze/thaw cycles


Methodology
Chemiluminescent microparticle immunoassay

Setup Schedule
M-F


Report Available
TAT 1 - 7 days


Reference Range
35 - 193 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
Test performed at West Roxbury Chemistry Lab
Contact: Jonathan Dryjowicz-Burek 857-203-5973
 


Last Updated: November 20, 2025


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.