HAMP and alkaline phosphatase measurement: When assessing the correlation of hepcidin with revised Atlanta classification (RAC), it was observed that on admission, hepcidin correlates, in mild AP, with WBC at admission (r = 0.366, p < 0.05) and PCT at admission (r = 0.461, p <0.01), with no other correlations in both moderately severe and severe AP.