More Fun Than a Blood Test: Researchers Want Diagnosis To Be as Simple as Spitting On Your Screen

By Valerie Ross
Dec 5, 2011 11:24 PMNov 19, 2019 8:24 PM


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 If two South Korean researchers have their way, the days of needing specialized equipment to test whether someone has strep, the flu, or other common illnesses may soon be numbered. The pair want to check for disease markers in a tiny drop of a bodily fluid by pressing it against a touchscreen, so your diagnosis could come straight from your smart phone. While there's no app for that yet, the scientists recently finished a proof-of-concept study showing that a touchscreen could differentiate between various concentrations of bacterial DNA---a first step towards diagnosing your disease by spitting on your iPad. How the Heck:

What's the News:

What's the Context:

  • In other efforts to move diagnostics out of the lab, researchers have also been developing a wide range of lab-on-a-chip tests, making diagnostic devices far smaller---and often cheaper---than traditional equipment.

  • Other research teams have also turned to personal electronics as a source of diagnostic power, with hardware add-ons that let smartphones function as microscopes or read the results of an STD test.

Not So Fast:

  • This was just a preliminary study; the researchers haven't yet shown that touchscreens can pick out what particular bacteria or viruses are present in a sample.

  • Personal electronics currently come with software that keeps touchscreens from being too sensitive, since no one wants sweat or other moisture in the environment to accidentally activate their phone. While phones and tablets could be set up to turn off that software during diagnosis, such a change would be expensive---and, therefore, unlikely unless it might prove profitable for electronics companies.

Reference: Byoung Yeon Won & Hyun Gyu Park. "A Touchscreen as a Biomolecule Detection Platform." Angewandte Chemie International Edition, published online October 26, 2011. DOI: 10.1002/anie.201105986 [via New Scientist]

Image courtesy of StrebKR / Flickr

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