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

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The new blood-clotting test uses only a single drop of blood and a smartphone with a plastic attachment that holds a tiny cup beneath the phone’s camera.

Credit: Mark Stone/University of Washington

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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Abstracts Copyright © 2022 SmithBucklin, Washington, DC, USA


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