Serum thyroxine binding globulin; TBG level
If electrophoresis is used, normal values may range from 10 mg/100 mL - 24 mg/100 mL.
If radioimmunoassay is used, then a normal range is 1.3 - 2.0 mg/100 mL.
Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
The examples above show the common measurements for results for these tests. Some laboratories use different measurements or may test different specimens.
Increased TBG levels may be due to:
Note: TBG levels are normally high in newborns.
Decreased TBG levels may be due to:
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