Thyroxine Binding Globulin
Ordering Recommendation
Not recommended for routine thyroid screening.
New York DOH Approval Status
Specimen Required
Serum separator tube.
Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.4 mL)
Frozen.
Plasma, tissue or urine. Grossly hemolyzed or lipemic specimens.
Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 month
Methodology
Quantitative Chemiluminescent Immunoassay
Performed
Mon, Wed, Fri
Reported
1-4 days
Reference Interval
13.0-30.0 µg/mL
Interpretive Data
FDA
Note
Hotline History
CPT Codes
84442
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0070410 | Thyroxine Binding Globulin | 3021-3 |
Aliases
- Serum TBG
- TBG
- TBG serum