Hybritech, Inc., a biotechnology company, develops, and markets monoclonal antibodies which are used in making diagnostic and medical monitoring tests to identify a variety of infectious, viral and cancer-related diseases including colon and prostate cancer, infertility, allergies, and pregnancy. The company was founded in 1978 and is based in San Diego, California. Hybritech, Inc. operates as a subsidiary of Beckman Coulter, Inc