Low Hormone Levels During Pregnancy

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Alternative Names

Serum thyroxine binding globulin; TBG level


Normal Values

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.


What abnormal results mean

Increased TBG levels may be due to:

  • Acute intermittent porphyria
  • H...
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