CFD and rheumatoid arthritis: Median (IQR) serum adipsin concentrations (μg/mL) were as follows: HCs, 1.2 (1.1-1.3); early-RA, 1.7 (1.4-2.2); established-RA, 1.5 (1.1-1.9); axSpA, 1.3 (1.1-1.4).