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There are gizmos that let your smartphone read credit cards, sync with your fitness wristband and even function as a TV remote control. Now you can add “run an HIV test” to the list.

A device invented by biomedical engineers at Columbia University turns a smartphone into a lab that can test human blood for the virus that causes AIDS or the bacteria that cause syphilis. The device is a dongle that attaches to the headphone jack, and requires no separate batteries. An app on the phone reads the results.

The dongle contains a lab on a chip. It consists of a one-time-use cassette — which has tiny channels as thin as a human hair — and a pump, which is operated by a mechanical button and draws blood from an inlet through the channels. …

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Source:: Smartphone attachment brings cheap HIV tests to remote areas

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