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. Author manuscript; available in PMC: 2021 Feb 24.
Published in final edited form as: Biosens Bioelectron. 2020 Oct 26;172:112770. doi: 10.1016/j.bios.2020.112770

Figure 3.

Figure 3.

PT measurements of anticoagulated human blood with printing biosensors. a) Impedance-based PT measurements for human blood (red) and chicken blood (blue). b) Schematics of procedure for testing human blood: fabricate devices and begin impedance test (top), sequentially add Innovin then calcium (middle), wait 30 seconds for mixing of previous solutions and add human blood (bottom). c) Clotting time for human blood as a function of added calcium concentration. Average ± standard deviation of 3 separate chips is shown with a strong linear correlation fit.