Thyroxine binding globulin

Alphabetical Test listing

Thyroxine binding globulin-13315

  
Thyroxine binding globulin
  
13315
  
LAB13315
  
TBG
  
  • Distinguish between high T4 levels due to hyperthyroidism and due to increased binding by TBG in euthyroid individuals who have normal levels of free hormones
  • Document cases of hereditary deficiency or increase of TBG
  • Work-up of thyroid disease
  
Serum
  
  
0.5 mL
  
0.3 mL
Note: This volume does not allow for repeat testing
  

Spin

  

Gold serum separator (SST) tube

  
  

Spin and separate

  
  

Ambient (preferred) - 7 days

Refrigerated - 14 days

Frozen - 14 days

  
LabCorp Burlington (001735): R-LC
  
Daily
  
1 - 3 days
  

Immunochemiluminometric assay (ICMA)

  

Age

Male

(μg/mL)

Female

(μg/mL)

<1 year

16−33

18−32

1 - 3 yrs

16−32

19−34

4 - 6 yrs

17−30

18−31

7 - 12 yrs

17−29

15−29

13 - 18 yrs

13−26

14−29

>18 yrs

13−39

13−39

  
84442
  
No
  
Result 3021-3
  
04/11/2019
  
11/11/2019