Figure 3: PT of human whole blood obtained from the QCM system plotted against PT gained with a mechanical coagulometer. Whole blood samples and whole blood samples with different heparin concentrations are indicated with appropriate symbols. (A) for NPs immobilized on VP-EGDMA, (B) for NPs immobilized on VP-DVB, (C) for NPs immobilized on styrene-DVB respectively. Each data point represents the mean of two measurements demonstrating error bars ± SD of two measurements.