Experimental Factor Ontology entry EFO_0009172 (thyroxine-binding globulin measurement) is is a quantification of thyroxine-binding globulin. Inherited abnormalities in the level of serum TBG have been classified as complete deficiency (TBG-CD), partial deficiency (TBG-PD), and excess (TBG-E). Patients are euthyroid (summary by Mori et al., 1995). Also known as: TBGQTL, thyroxine-binding globulin QTL, thyroxine-binding globulin excess, thyroxine-binding globulin quantitative trait.