But the drug’s use needs to be constantly monitored because of a tendency to react with other drugs and metabolic molecules, says John Curtis, chief executive of MicroVisk, the U.K.-based company behind the new device. Warfarin is used to treat patients suffering from a range of conditions, from pulmonary embolism and heart conditions to thrombosis and excessive blood clotting. One directly measures blood thickness, while the other detects background vibrations that are subtracted to provide a clearer signal. Good vibrations: The MEMS blood sensor has two cantilevers. This portable device, featuring a new micromechanical sensor, would make it far easier for these patients to safely treat themselves. Millions of patients who take the blood-thinning drug Warfarin could soon use a home testing kit to measure the thickness of their own blood.
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