FT3

This study explored the relationship between thyroid markers and gestational diabetes mellitus (GDM) as well as postpartum glucose metabolism. Data from 1,467 pregnant women revealed that higher free triiodothyronine (FT3), thyroid peroxidase antibody (TPOAb), and thyroglobulin antibody (TgAb) levels in the first trimester, and lower free thyroxine (FT4) levels in the second trimester, were associated with increased GDM risk. Additionally, elevated TPOAb and TgAb levels were predictive of abnormal postpartum glucose tolerance in GDM patients. These findings suggest that thyroid dysfunction and antibody presence during pregnancy are significant risk factors for GDM and postpartum glucose abnormalities, highlighting their potential value in early risk assessment and monitoring.