The Stanbio chemistry glycated serum protein (GSP) LiquiColor diabetic biomarker test from EKF Diagnostics, Cardiff, United Kingdom, provides a 2- to 3-week indicator of average blood glucose. Closing the information gap between daily blood glucose testing and the 2- to 3-month HbA1c reading, the test serves as an intermediate marker of glycemia in instances where HbA1c may be of limited value, such as pregnancy, reduced red blood cell lifespan, and hemodialysis. Based on a double enzymatic degradation method, the assay was developed to improve on the older non-enzymatic fructosamine nitroblue tetrazolium (NBT) method. The test utilizes the specificity of fructosyl-amino oxidase to eliminate inaccuracies caused by non-glycated protein reducing substances, which significantly interfere with the fructosamine NBT method. Available as a liquid-stable kit and calibrator, it is suitable to use on a variety of clinical chemistry analyzers, with onboard stability of up to 4 weeks. It is also both FDA approved and CE marked. For more information, visit Stanbio at booth 1018 at AACC 2015 or EKF Diagnostics.