HAMP and obesity due to melanocortin 4 receptor deficiency: Categorising by obesity class showed that serum hepcidin was higher in women with Class II and III obesity, [Class I 8.08 ng/mL (SD 8.42), Class II 9.56 ng/mL (SD 8.19), Class III 10.45 ng/mL (SD 10.09)]; however, there was no significant difference between women classified as obese and their normal weight counterparts (ANOVA, P = 0.3).