US researchers develop smartphone dongle that can detect HIV in 15 minutes

By Park Sae-jin Posted : March 16, 2015, 15:55 Updated : March 16, 2015, 15:55
A group of U.S. researchers have developed a low-cost smartphone dongle that can simultaneously detect HIV and syphilis from a finger prick of blood in just 15 minutes.

The device, developed by the researchers at Columbia University School of Engineering and Applied Science, led by Samuel K. Sia, can perform a point-of-care test that simultaneously detects three infectious disease markers.

The device replicates, for the first time, all mechanical, optical and electronic functions of a lab-based blood test, they said.

The device performs an enzyme-linked immunosorbent assay (ELISA) without requiring any stored energy: all necessary power is drawn from the smartphone. It performs a triplexed immunoassay not currently available in a single test format: HIV antibody, treponemal-specific antibody for syphilis, and non-treponemal antibody for active syphilis infection.

By Ruchi Singh
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