Triiodothyronine in pregnancy

Triiodothyronine, or T3, is a hormone produced by the thyroid gland that helps regulate metabolism and energy in the body. During pregnancy, T3 supports the development of the baby's brain and body. Proper levels are important because too little T3 can lead to issues like delayed growth or developmental problems in the baby, while too much can cause maternal health issues. Pregnant women may have changes in thyroid function, so doctors monitor T3 levels to ensure both mother and baby stay healthy throughout pregnancy.