T3, Total

Test Code
LT3


CPT Codes
84480

Preferred Specimen
0.6 mL of whole blood (0.3 mL of serum or plasma)


Minimum Volume
0.2 mL of whole blood (0.1 mL of serum or plasma)


Transport Container
Serum Separator (gold top) or heparinized plasma (green or mint top)


Transport Temperature
Refrigerated


Specimen Stability
Room Temperature: 8 hours
Refrigerated: 7 days
Frozen: 4 weeks at - 20 C


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Turbidity


Methodology
Competitive Immunoassay

Report Available
Inpatient turn around time: 8 hours.  Outpatient testing received by noon will be reported by 4:30 p.m. Specimens received after noon will be reported by the next morning.




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.