LEP and obesity due to melanocortin 4 receptor deficiency: In females, leptin was 16.34 ± 15.52 ng/mL in those with low BMI, 19.19 ± 10.71 ng/mL in those with normal BMI, 35.25 ± 16.13 ng/mL in those where the BMI indicated being overweight, and 48.82 ± 17.45 ng/mL in those where the BMI indicated obesity.