Free Triiodothyronine Index (FT3I) 

 

METHODOLOGY

This is not a test per-se.  It is a calculated ratio of two tests: Total T3 / THBR
 

PERFORMED  

 

Tuesday & Friday

REPORTED  

2 days

 

REMARKS

FT3-Index Components: Triiodothyronine (T3), Thyroid Hormone Binding Ratio (THBR)

 

REFERENCE RANGE

 

80 - 180 (no units)

CPT CODES

84480 (34), 84479 (THBR)
 

USC ENDOCRINE SERVICES LABORATORY
126 W. Del Mar Blvd 
Pasadena, CA 91105-2508
Phone: (855) 224-7111
Fax: (855) 224-7123

Email: endolab@usc.edu

The USC Endocrine Services Laboratory is licensed by the State of California, Department of Health Services, and accredited by the College of American Pathologists, and certified by Medicare according to the provisions of the U.S. Department of Health and Human Services Clinical Laboratory Improvement Act of 1988.

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