THYROXINE BINDING GLOBULIN

Code
900.5210
Name
THYROXINE BINDING GLOBULIN
Category
None
Department
Send-Out
Start Date
Expiration Date
Synonyms
TBG
CPT Codes
84442
Site
SBMF
Reference Test
44307
ATLAS Test Code

Specimen Information

Type

Gold, SST

Volume

0.5 ml

Transport Info

Centrifuge and immediately transfer serum to separate plastic tube
Frozen

Fasting Required?
False
Patient Instructions

Reference Range

13.0-30.0 µg/mL

Methodology

Quantitative Chemiluminescent Immunoassay (CLIA)

Clinical Significance

Determination of thyroxine binding globulin (TBG) levels is particularly useful for cases in which total thyroid hormone levels do not correlate with the thyro-metabolic status, such as with pregnancy, the use of contraceptive steroids, or in patients with hereditary excesses or deficiencies of TBG.

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