Glycated Serum Protein (GSP) LiquiColor® Assay

EKF Diagnostics’ Glycated Serum Protein (GSP) LiquiColor® Assay offers a 2 – 3 week indicator of average blood glucose.

EKF Diagnostics’ Glycated Serum Protein (GSP) LiquiColor® Assay offers a two to three week indicator of average blood glucose. This closes the information gap between daily glucose levels and quarterly HbA1c testing.

Glycated Serum Protein (GSP) serves as an accurate intermediate marker of glycemia in instances where HbA1c may be of limited value such as pregnancy, reduced RBC lifespan and hemodialysis.

The difference between actual measured HbA1c and predicted HbA1c from glycated serum protein is called the glycation gap.

Measuring HbA1c and Glycated Serum Protein (GSP) together offers improved diagnostic accuracy by more reliably predicting complications of diabetes including nephropathy and retinopathy.

Glycated Serum Protein (GSP) provides superior specificity and accuracy compared to fructosamine assays (NBT method) for monitoring and assessment of short-term to medium-term (past two to three week period) average blood glucose levels.

Complementary to HbA1c in diagnosis and screening of diabetes.

Studies suggest that combining Glycated Serum Protein (GSP) results with HbA1c measurements provides a better assessment of long term risk of diabetic complications.

MethodologyCorrelation to predicate methodLinearityOn-board stabilityCalibrationSample typeSample size
EnzymaticN = 65

R2 = 0.9966

Slope = 0.9542

Y intercept = 14.567

Range of values = 60-1249 µmol/L GSP

0.0 to 1354.0 µmol/LFour weeksTwo point

Sold separately

Serum10 µL
Control level 1Control level 2Serum level 1Serum level 2
Mean (µmol/L)204751251373
SD (µmol/L)
CV (%)1.1%0.7%0.8%0.6%
Control level 1Control level 2Serum level 1Serum level 2
Mean (µmol/L)204751251373
SD (µmol/L)
CV (%)1.2%0.7%1.3%1.0%

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