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
861


CPT Codes
84479

Preferred Specimen
1 mL serum


Minimum Volume
0.5 mL


Other Acceptable Specimens
Plasma collected in a sodium or lithium heparin (green-top) tube


Transport Container
Plastic screw-cap vial


Transport Temperature
Room temperature


Specimen Stability
Room temperature: 7 days
Refrigerated: 10 days
Frozen: 28 days


Methodology
Immunoassay (IA)

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


Reference Range
22-35 %


Clinical Significance
Decreased: Pregnancy, estrogens, hyperproteinemia, acute intermittent porphyria.
Increased: Androgens, hyperproteinemia, stress, acute liver disease.
This assay is a measure of available thyroid hormone binding sites and should be interpreted with thyroxine levels.


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



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.