Fructosamine concentrations at baseline (week 0) and weeks 1, 2, 4, 6, and 10 in cats with DM treated with insulin glargine and randomized to receive either a LCHP diet (open bars) or a control diet (closed bars). Over the entire course of the study, there was a significantly greater decrease in fructosamine concentrations for the LCHP group compared to the control group (P=0.01).