tokens: There was no difference in serum albumin and transferrin levels , but serum prealbumin levels in the group fed early were more desirable than those of the control group ( from 15 . 8 + / - 2 . 5 mg / dl to 28 . 9 + / - 3 . 8 mg / dl vs from 18 . 0 + / - 2 . 0 mg / dl to 25 . 9 + / - 3 . 9 mg / dl ) .