Response Genetics, Inc., a life sciences company, researches, develops, markets, and sells pharmacogenomic tests for use in the treatment of cancer in the United States, Europe, and internationally. The company offers tests for measuring predictive factors for therapy response in tumor tissue samples. It provides testing services for non-small cell lung cancer, colorectal cancer, gastric and gastroesophageal cancer, melanoma and thyroid cancer, breast cancer, and glioma through its ResponseDX: Lung, ResponseDX: Colon, ResponseDX: Gastric, ResponseDX: Melanoma, ResponseDX: Thyroid, ResponseDX: Breast, ResponseDX: Glioma, and ResponseDX: Tissue of Origin test suites. The company also develops tests for other tumor types; and provides technical component and professional component testing services. It serves community based oncologists, pathologists, physician offices, hospitals, and pharmaceutical companies through its sales force. The company was formerly known as Bio Type, Inc. and changed its name to Response Genetics, Inc. in August 2000. Response Genetics, Inc. was founded in 1999 and is headquartered in Los Angeles, California.