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Fast, low-cost device uses the cloud to speed up diagnostic testing for HIV and more
Date:1/24/2013

s that such a mobile device has to deliver," he says. "These include fluid pumping, optical detection, and real-time synchronization of diagnostic results with patient records in the cloud. We've been able to engineer all these functions on a handheld mobile device and all powered by a battery."

This new technology, which combines cell phone and satellite communication technologies with fluid miniaturization techniques for performing all essential ELISA functions, could lead to diagnosis and treatment for HIV-infected people who, because they cannot get to centralized health care centers, do not get tested or treated.

"This is an important step forward for us towards making a real impact on patients," says Jessica Justman, MD, senior technical director at ICAP and associate clinical professor of medicine in epidemiology at the Mailman School of Public Health. "And with the real-time data upload, policymakers and epidemiologists can also monitor disease prevalence across geographical regions more quickly and effectively."

Working with ICAP, OPKO, the Rwandan Ministry of Health, and Rwandan collaborators at Muhima Hospital and two health clinicsProjet San Francisco and Projet Ubuzima, Sia and his team assessed the device's ability to perform HIV testing and then synchronized results in real time with the patients' electronic health records. They successfully tested over 200 serum, plasma, and whole blood samples, all collected in Rwanda.

The mobile device also successfully transmitted all whole-blood test results from a Rwandan clinic to a medical records database stored on the cloud. The device produced results in agreement with a leading ELISA test, including detection of weakly positive samples that were missed by existing rapid tests. The device operated autonomously with minimal user input, produced each result in 15 minutes (compared to 3 hours with the benchtop ELISA), and consumed as little power as a mobile phone.


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Contact: Holly Evarts
holly.evarts@gmail.com
347-453-7408
Columbia University
Source:Eurekalert  

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