Objective: To evaluate the clinical significance of glycated albumin (GA) measured by enzymatic method and to compare its effect with glycosylated hemoglobin A1c (HbA1c) in type 2 diabetes mellitus (DM).
Methods: 128 type 2 DM patients and 84 normal subjects from the Chinese PLA General Hospital were enrolled for the study. The levels of GA, HbA1c, FBG, PBG in DM patient were detected at baseline and followed visit at 2, 4, 8 weeks after blood glucose management. The levels of GA, HbA1c, FBG, PBG and 75 g OGTT were also detected in above normal subjects.
Results: Intra CV and inter CV of enzymatic were (0.74-0.9)% and (0.94-1.49)% respectively. In normal subjects GA was in the range of (9-14)%. At baseline, the GA level was significantly correlated with HbA1c (r = 0.8326, P < 0.01), FBG and 2 hour PBG. After 2, 4, 8 weeks treatment, GA level in DM patients was concomitantly decreased with the improvement of FBG, PBG and HbA1c. At early 2 weeks visit, GA, but not HbA1c, showed significant decrease from its baseline (P < 0.05).
Conclusion: Enzymatic measuring GA was highly correlated with HbA1c, and changing concomitantly with the decrease of HbA1c, FBG, PBG during the 8 weeks treatment. GA was more sensitive than HbA1c for short-term variations of glycemic control during treatment of diabetic patients. GA can be used as a better index of short term mean level of blood glucose in diabetic patients.