Researchers have developed an innovative device that can diagnose glioblastoma, an aggressive brain cancer, in under an hour using a novel biochip. The chip leverages electrokinetic technology to detect active Epidermal Growth Factor Receptors (EGFRs) in extracellular vesicles from a small blood sample. This method offers high sensitivity and selectivity, minimizing interference and potentially improving early detection. The technology could be adapted for diagnosing other diseases, enhancing its clinical impact.