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Thyroxine Binding Globulin
0070410
Ordering Recommendation
Not recommended for routine thyroid screening.
Mnemonic
TBG
Methodology
Quantitative Chemiluminescent Immunoassay
Performed
Mon, Wed, Fri
Reported
1-4 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
 
Collect
Serum separator tube.  
Specimen Preparation
Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.4 mL)  
Storage/Transport Temperature
Frozen.  
Unacceptable Conditions
Plasma, tissue or urine. Grossly hemolyzed or lipemic specimens.  
Remarks
 
Stability
Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 month  
Reference Interval
13.0-30.0 µg/mL
Interpretive Data


Note
CPT Code(s)
84442
Components
Component Test Code*Component Chart NameLOINC
0070410Thyroxine Binding Globulin3021-3
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Serum TBG
  • TBG
  • TBG serum