label: Reduced thyroxin-binding globulin
label_lc: reduced thyroxin-binding globulin
description: "An abnormally decreased amount of thyroxin-binding globulin (TBG) in blood. TBG is responsible for carrying the thyroid hormones thyroxine (T4) and 3,5,3'-triiodothyronine (T3) in the bloodstream."