Fructosamine, glycated albumin, and 1,5-anhydroglucitol (1,5-AG) appear to be associated with the development of diabetes, independent of baseline A1C and fasting glucose. In a study, patients with the highest levels of fructosamine and glycated albumin had significantly higher diabetes risk. Those with the lowest 1,5-AG levels had significantly lower diabetes risk.

Abstract: Diabetes Care, November 2012.