We tested this Google Glass-based RDT reader plat- form through human immunode
fi ciency virus (HIV)
and prostate-speci
fi c antigen (PSA) rapid tests (see Figure 2) by installing our application on Google Glass devices obtained as part of the Google Glass Explorer program. The PSA test is routinely used for prostate cancer screening and surveillance in men. Recent work has suggested that the ratio of free PSA to total PSA (i.e., free plus those bound to other proteins) and the rate of increase in PSA level can collectively predict the presence and aggressiveness of prostate cancer.5255 For our proof-of-concept demonstration experiments,