Scientists have developed an innovative wearable device called AllergE, capable of warning individuals with food allergies of an impending threat before the body begins to react. Developed by researchers at KAUST (King Abdullah University of Science and Technology), this biosensor is set to radically transform allergy management.<\/p>\n
How does AllergE work?<\/p>\n
The device relies on an innovative system that painlessly extracts necessary information from interstitial fluid using microneedles thinner than a human hair and less than one millimeter in length.<\/p>\n
DNA strands, or aptamers, placed inside the needles act as molecular sentinels. Upon contact with allergy-triggering IgE antibodies, they change shape and generate an electrochemical signal. A specialized reader converts this signal into digital data, which will eventually allow users to monitor allergy risks and prevent dangerous reactions directly via their smartphones at home.<\/p>\n
How accurate is the device?<\/p>\n
Unlike traditional tests, AllergE is a hundred times more sensitive. Laboratory trials have demonstrated its ability to detect minute concentrations of IgE antibodies (as low as 30 pg\/mL) and precisely distinguish them from similar antibodies.<\/p>\n
The microneedles are manufactured using high-resolution 3D lithography techniques, granting them exceptional durability and precision. They penetrate exactly to the depth where the required fluid is located, yet remain imperceptible and painless for the patient.<\/p>\n
This technology, the research for which was published in the journal ACS Materials Letters, potentially reduces the risk of life-threatening anaphylaxis and offers a new guarantee of safety to millions of people suffering from allergies.<\/p>\n