OncoCyte Corporation operates as a precision diagnostics company in the United States and internationally. The company develops and commercializes laboratory developed tests, kitted research use only tests, and kitted clinical tests. It is developing DetermaCNI, a blood-based monitoring tool that detects progression early after one cycle cancer treatment; and DetermaIO, a gene expression test that assesses the tumor microenvironment to predict response to immunotherapies. The company also offers VitaGraft Kidney, a blood-based transplant monitoring test that quantifies the concentration of donor-derived cell-free DNA for kidney transplantation; VitaGraft Liver, a blood-based transplant monitoring test that quantifies the concentration of donor-derived cell-free DNA for liver transplantation; and GraftAssure, a dd-cfDNA test that uses droplet digital PCR technology to measure the concentration of dd-cfDNA using 48 predefined SNPs. In addition, it provides testing services for biomarker discovery, assay design and development, clinical trial support, and various biomarker tests. The company has a collaboration agreement with Bio-Rad Laboratories, Inc. for the development and commercialization of research use only and in vitro diagnostics kitted transplant products using Bio-Rad's ddPCR instruments and reagents. OncoCyte Corporation was incorporated in 2009 and is based in Irvine, California.