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.
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



No compliance statements are in use for this test.

Note
Hotline History
N/A
CPT Codes

84442

Components
Component Test Code* Component Chart Name LOINC
0070410 Thyroxine Binding Globulin 3021-3
* 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
Thyroxine Binding Globulin