Back to Test Directory0152 : T3 Uptake
INFORMATION:
Alternate Name:
T3 Uptake (T3U)
Methodology:
Electrochemiluminescence Immunoassay
Clinical Utility:
T3 uptake is an indirect measure of the quantity of thyroxine binding proteins (thyroid binding prealbumin, albumin, and TBG) in plasma. It is directly proportional to the degree of saturation of the binding proteins by thyroxine.
ORDERING:
Test Code:
0152-9
Turnaround Time:
1 DAY
Preferred Specimen:
1 mL SST Tube
Collection:
| Container | Qty | Temp | Stability |
|---|---|---|---|
| SST Tube | 1 | Refrigerate | 7 DAYS |
Collection Instructions:
SST: Fill tube, invert gently 5 times, label with patient name, let stand for minimum of 30 minutes, maximum of 1 hr, spin for 10-15 minutes
Alternative Specimen:
Red Top, Microtainer - Pediatric SST, Aliquot Tube-Serum, Microtainer - Pediatric Red, Aliquot Serum- Red Top, Amber Serum
Billing:
CPT Codes:
84479 x 1
CPT Code Disclaimer
CPT codes provided are for informational purposes only. Accuracy of CPT presented should be validated prior to consideration for billing.
CPT coding is the sole responsibility of the billing party. Please direct any questions regarding CPT coding to the payer being billed.
