TBII-Thyrotropin Binding Inhibitory Immunoglobulin

Test Code
5738

CPT Codes
83519

Preferred Specimen
1 mL serum

Minimum Volume
0.5 mL

Transport Container
Plastic screw-cap vial

Transport Temperature
Refrigerated

Specimen Stability
Room temperature: 48 hours
Refrigerated: 7 days
Frozen: 30 days

Methodology
Radioreceptor Assay (RRA)

Reference Range
≤16% Inhibition

Clinical Significance
Measurement of TBII is used to diagnose and manage Graves' disease, neonatal hypothyroidism, and postpartum thyroid dysfunction.



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.