Tuesday, February 7, 2023
HomeLaboratory MedicineThyroid-Binding Globulin

Thyroid-Binding Globulin

Reference Range

Thyroid-binding globulin (TBG) is produced in the liver and is a circulating protein that reversibly binds thyroid hormones3,5,3’-triiodothyronine (T3) and thyroxine (T4) and carries them in the bloodstream.

The reference range for TBG is 1.1-2.1mg/dL.

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