Luminostics is a Y Combinator-backed startup building a smartphone adaptor for at-home disease testing and health monitoring using nanotechnology that interfaces with the phone's built-in optics. The product platform enables the 15-minute detection and/or quantitation of targets such as bacteria, viruses, hormones and proteins from a variety of liquid samples. A user will simply (i) add a small liquid sample to a single-use cartridge, (ii) load the cartridge into a phone case-like reusable smartphone adaptor, and (iii) press a button on an app to obtain a result in a few minutes.