The device uses nanotubes to examine the electrical properties of a cell, which may indicate health.

The device uses nanotubes to examine the electrical properties of a cell, which may indicate health. Eventually, researchers hope it will be able to detect bacteria, viruses, and even cancer

More info: http://www.universityherald.com/articles/3650/20130624/published-research-shows-promise-new-device-detect-disease-drop-blood.htm