Normal Range of Glycated Serum Protein
Glycated serum protein (GSP) is an important indicator for assessing short-term glycemic control in patients with diabetes. Under normal circumstances, the reference range for GSP is 122–236 μmol/L. The analysis is as follows:

The reference range for glycated serum protein—122–236 μmol/L—is established using the fructosamine oxidase assay method. GSP reflects the average blood glucose level over the preceding 2–3 weeks and serves as a clinically significant parameter for evaluating glycemic control in diabetic patients.
When the measured GSP value falls outside the normal range, it may indicate suboptimal glycemic control, necessitating timely adjustments to dietary management and pharmacotherapy. Therefore, regular monitoring of GSP in diabetic patients is essential to promptly identify and address issues related to glycemic control.
Because different laboratories may employ varying assay methods and instruments, the reported reference range for glycated serum protein may differ. When interpreting GSP results, clinicians should refer to the specific reference range provided by the testing laboratory and consider the physician’s clinical interpretation.