In 10 diabetic cases serum levels of T3, FT3 ard T3/ rT3 ratio were significantly decreased; T: increased slightly but not significantly; T4, FT4 and TSH were normal.

• 糖尿病组血清T_3、FT_3、T_3/rT_3比值显著低于正常对照组,rT_3增高但不显著,T_4、FT_4和TSH皆正常,符合低T_3综合征。