Which of the following drugs decrease Thyroid binding globulin
A. Estrogens
B. Tamoxifen
C. glucocorticoids
D. Methadone
ANSWER C. glucocorticoids
REF: GG 12E / page 1135
Estrogens,Tamoxifen, Methadone increase Thyroid binding globulin and increase thyroxine binding to Thyroid binding globulin
Factors that Alter Binding of Thyroxine to Thyroxine-Binding Globulin