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. Author manuscript; available in PMC: 2020 Apr 1.
Published in final edited form as: J Cardiothorac Vasc Anesth. 2018 Aug 31;33(4):976–984. doi: 10.1053/j.jvca.2018.08.201

Table 2.

Parameters Output by the Quantra and QPlus Cartridge

QPlus Parameter Units Description Reference Range
Clot time (CT) Seconds CT measured with kaolin activation 104–166 s
Heparinase clot time (CTH) Seconds CT measured with kaolin activation and with heparinase I 103–153 s
Clot stiffness (CS) hectoPascals (hPa) CS measured with thromboplastin activation with hexadimethrine bromide 13.0–33.2 hPa
Fibrinogen contribution (FCS) hPa CS measured with thromboplastin activation and hexadimethrine bromide and abciximab 1.0–3.7 hPa
Platelet contribution (PCS) hPa Calculated from subtracting FCS from CS 11.9–29.8 hPa
Clot time ratio Unitless Calculated ratio of CT over CTH N/A