Figure 1. 25th, median, 75th Centiles of TSH (mIU/L), FT3 (pmol/L), FT4 (pmol/L) in age-BMI groups. Underweight: BMI within 16 - 18.5 kg/m2; normal: BMI within 18.5 to 24 kg/m2; overweight: BMI within 24 - 28 kg/m2; obesity: BMI within 28 - 35 kg/m2. The triangle and dashed line indicated female and square and solid line indicated male.
