http://www.sciencemag.org/news/2018/07/chip-can-quickly-identify-microbes-living-your-body

It’s not quite a tricorder from Star Trek, but a new portable laptop-size device can identify dozens of different microbes in your body within hours by speed reading key genetic markers. The test could dramatically improve treatment of infectious diseases and reduce antibiotic resistance by ensuring that doctors prescribe only those medications for which the bugs are vulnerable.

Physicians already have tests to identify microbes by their genetic makeup. But these usually involve growing the organism in a lab dish, a process that can take days or weeks. That often leaves them guessing about how to best fight an infection until the results come in.