Corporate Banner
Satellite Banner
Molecular & Clinical Diagnostics
Scientific Community
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Lab-on-a-Chip Speeds up HIV Testing

Published: Friday, January 25, 2013
Last Updated: Friday, January 25, 2013
Bookmark and Share
Fast, low-cost device uses the cloud to speed up testing for HIV and more.

Associate professor of biomedical engineering at Columbia Engineering, has taken his innovative lab-on-a-chip and developed a way to not only check a patient’s HIV status anywhere in the world with just a finger prick, but also synchronize the results automatically and instantaneously with central health-care records—10 times faster, the researchers say, than the benchtop ELISA, a broadly used diagnostic technique. The device (pictured at right) was field-tested in Rwanda by a collaborative team from the Sia lab and ICAP at Columbia's Mailman School of Public Health.
In the study published online January 18, 2013, in Clinical Chemistry, and in the print April 2013 issue, Sia describes a major advance towards providing people in remote areas of the world withlaboratory-quality diagnostic services traditionally available only in centralized health care settings.

“We’ve built a handheld mobile device that can perform laboratory-quality HIV testing, and do it in just 15 minutes and on finger-pricked whole blood,” Sia says. “And, unlike current HIV rapid tests, our device can pick up positive samples normally missed by lateral flow tests, and automatically synchronize the test results with patient health records across the globe using both the cell phone and satellite networks.”

Sia collaborated with Claros Diagnostics (a company he co-founded, now called OPKO Diagnostics) to develop a pioneering strategy for an integrated microfluidic-based diagnostic device—the mChip—that can perform complex laboratory assays, and do so with such simplicity that these tests can easily be carried out anywhere, including in resource-limited settings, at a very low cost. This new study builds upon his earlier scientific concepts and incorporates a number of new engineering elements that make the test automated to run with data communication over both cell phone and satellite networks.

“There are a set of core functions 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 clinics—Projet 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.

This latest study builds on previous work from the Sia Lab on building a lab-on-a-chip for personal health diagnosis. For this earlier device, Columbia University was named a Medical Devices runner-up in The Wall Street Journal’s prestigious Technology Innovation Awards in 2011.
This research has been funded by a $2-million Saving Lives at Birth transition grant (United States Agency for International Development, the Bill & Melinda Gates Foundation, Government of Norway, Grand Challenges Canada, and the World Bank).

Sia’s next step will be to implement an antenatal care panel for diagnosing HIV and sexually transmitted diseases for pregnant women in Rwanda. He is also exploring the use of this technology for improving personal health for consumers in the United States.

"The ability to perform state-of-the-art diagnostics on mobile devices has the potential to revolutionize how patients manage their health,” Sia says. “I’m pleased with the progress we have made so far, and we are working hard with our collaborators to bring this technology to clinicians, patients, and consumers.”


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 3,500+ scientific posters on ePosters
  • More than 5,000+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

New Way to Identify Brain Tumor Aggressiveness
Looking at a brain tumor’s epigenetic signature may help guide therapy.
Friday, January 29, 2016
Link Between Congenital Heart, Brain Disorders
Tools of precision medicine may lead to earlier identification and treatment of children with neurodevelopmental disorders.
Thursday, December 10, 2015
Dentists Tapped for New Role: Drug Screenings
A visit to the dentist has the potential to be more than a checkup of our teeth as patients are increasingly screened for medical conditions like heart disease and diabetes.
Tuesday, August 18, 2015
DNA Abnormalities Found in Children with Chronic Kidney Disease
Routine genetic screening of children with CKD could lead to earlier, more precise diagnoses.
Tuesday, April 21, 2015
Scientific News
Point of Care Diagnostics - A Cautious Revolution
Advances in molecular biology, coupled with the miniaturization and improved sensitivity of assays and devices in general, have enabled a new wave of point-of-care (POC) or “bedside” diagnostics.
ReadCoor Launched to Commercialize 3D Sequencing Tech
ReadCoor will leverage the Wyss Institute’s method for simultaneously sequencing and mapping RNAs within cells and tissues to advance development of diagnostics.
Heart Arrhythmia Caused by Mosaic of Mutant Cells
Researchers have solved the genetic mystery of an infant suffering from heart arrhythmia.
Crispr Toolbox Expanded By Protein
Researchers have shown a newly discovered CRISPR protein has two distinct RNA cutting activities.
Over Two-Thirds of Cervical Cancer Deaths Prevented
Cervical screening prevents 70% of cervical cancer deaths and if all eligible women regularly attended screening this would rise to 83%.
Detecting Bacterial Infections in Newborns
Researchers tested an alternative way to diagnose bacterial infections in infants—by analyzing RNA biosignatures from a small blood sample.
Mechanisms of Parkinson’s Pathology
Defects that lead to cells’ failure to decommission faulty mitochondria cause nerve cells to die, triggering the symptoms of Parkinson’s disease.
Case for Liquid Biopsies Builds in Advanced Lung Cancer
Study addresses unmet need for better, non-invasive tests called out in recent "Moonshot" blue ribbon panel report
Genetic Misdiagnoses of Heart Condition
Analysis found several genetic variations previously linked with a heart condition were harmless, leading to condition misdiagnosis.
Opening Door to Oesophageal Cancer Targeted Treatments
Scientists have discovered that oesophageal cancer can be classified into three different subtypes.
Skyscraper Banner

SELECTBIO Market Reports
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
3,500+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
5,000+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!