DBS to venous measurement and equivalency
REGRESSION
In the venous and DBS samples where both samples yielded a measurement, for total cholesterol, CRP, triglycerides and HbA1c, there was a significant relationship between venous and DBS measures (For total cholesterol, CRP, triglycerides and HbA1c the following DBS-to-venous (serum or whole blood) equivalency equations were obtained by regressing serum or whole blood values on raw DBS values using Deming regression.The mean and standard deviation for venous and venous-equivalent DBS values for each analyte, by mode of sample collection, are shown in Table Total cholesterol, C-reactive protein, triglycerides, and glycated haemoglobin values for venous and serum-equivalent DBS data.