Spun out of University of California San Francisco, Rainbow Diagnostics is a biotech start-up still primarily in stealth mode. Located in the UCSF QB3 incubator, the company is structured around development of next generation single cell analysis tools for single cell spatial genomics and clinical diagnostics. These tools are intended to enable high-throughput, in-situ single-cell genomic and transcriptomic analysis in a fast and cost-effective way.