Predictive Effect of FT3 Within the Euthyroid Range on HDL‐C in Patients With Type 2 Diabetes: A Cross‐Sectional Analysis of Inpatients in China

This study shows that there is a negative correlation and nonlinear relationship between FT3 and HDL-C in the Chinese population with diabetes. When FT3 is between 2.76-3.48 pmol/L, HDL-C tends to a stable state; When FT3 is between 3.48-6.45 pmol/L, HDL-C decreases with the increase of FT3 concentration (According to the reference range used by our hospital, the normal value of serum FT3 is 2.76-6.45 pmol/L). These findings suggest that maintaining FT3 within the range of 2.76 to 3.48 pmol/L may be most beneficial for mitigating the progression of cardiovascular disease in patients with T2DM.