ABSTRACT We demonstrate a Google Glass-based rapid diagnostic test (RDT) reader platform capable of
qualitative and quantitative measurements of various lateral fl
ow immunochromatographic assays and similar
biomedical diagnostics tests. Using a custom-written Glass application and without any external hardware
attachments, one or more RDTs labeled with Quick Response (QR) code identi
fi
ers are simultaneously imaged
using the built-in camera of the Google Glass that is based on a hands-free and voice-controlled interface and
digitallytransmitted toaserverfordigitalprocessing.TheacquiredJPEGimagesareautomaticallyprocessedto
locate all the RDTs and, for each RDT, to produce a quantitative diagnostic result, which is returned to the Google Glass (i.e., the user) and also stored on a central server along with the RDT image, QR code, and other relatedinformation(e.g.,demographicdata).Thesameserveralsoprovidesadynamicspatiotemporalmapand real-time statistics for uploaded RDT results accessible through Internet browsers. We tested this Google Glass-based diagnostic platform using qualitative (i.e.,yes/no)humanimmunode
fi
ciencyvirus (HIV)andquantitativeprostate-speci
fi
cantigen(PSA)tests. ForthequantitativeRDTs,we measured activated
tests atvarious concentrations ranging from 0to 200 ng/mL for free andtotal PSA. This wearable RDT reader platform runningon Google Glass combines a
hands-free sensing and image capture interface with powerful servers running our custom image processing codes, and it can be quite useful for real-time
spatiotemporal tracking of various diseases and personal medical conditions, providing a valuable tool for epidemiology and mobile health.