SHBG and hypothyroidism: Potential markers of tissue level hypothyroidism - SHBG (F(1,154) = 0.001, β = −0.003, p = 0.97), CK (F(1,154) = 1.23, β = 0.09, p = 0.27), eGFR (F(1,154) = 1.4, β = 0.09, p = 0.23), total cholesterol (F(1,154) = 0.18, β = −0.4, p = 0.66), and LDL (F(1,154) = 0.83, β = −0.7, p = 0.34) - showed no association with the FT3/FT4 ratio.