CareDx, Inc. is a commercial stage company. It develops, markets, and delivers a diagnostic surveillance solution for heart transplant recipients. The Company provides AlloMap, a noninvasive blood test used to aid in the identification of heart transplant recipients. It is also pursuing other areas of transplant surveillance, such as the use of cell-free DNA (cfDNA) as a biomarker for rejection. CareDx, Inc. is based in Brisbane, California.