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Thyroid-Binding Globulin

Meaning

Thyroid-Binding Globulin, or TBG, is a specific glycoprotein synthesized primarily by the liver that serves as the principal transport protein for thyroid hormones, thyroxine (T4) and triiodothyronine (T3), within the bloodstream. It plays a crucial role in maintaining a stable reservoir of these vital hormones, ensuring their controlled delivery to target tissues throughout the body.