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Smartphone App Can Vibrate Single Drop of Blood to Determine How Well It Clots

By University of Washington News

February 17, 2022

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A test developed by researchers at the University of Washington (UW) uses a single drop of blood and a smartphone vibration motor and camera to determine whether the blood clots too easily, or not at all.

The system features a plastic attachment that holds a small cup beneath the phone's camera. A drop of blood is added to the cup, which contains a small copper particle and a chemical to start the clotting process, after which the phone's vibration motor shakes the cup.

The camera monitors the particle's movement, which stops as a clot forms.

Tests of the system showed that it fell within the accuracy range of commercially available tests.

WU's Shyam Gollakota said, "Almost everyone who has a phone can use this. All you need is a simple plastic attachment; no additional electronics of any kind."

From University of Washington News
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