OPKO Health, Inc. operates as a healthcare company, in the United States, Ireland, Chile, Spain, Israel, Mexico, and internationally. The company operates in two segments, Pharmaceutical and Diagnostics. The Pharmaceutical segment develops MDX2001, a tetra-specific antibody targeting several types of solid tumors in Phase 1 clinical trials; MDX2003, a tetra-specific antibody targeting two antigens for hematological tumors in Phase 1 clinical trials; and MDX2004, a trispecific immune modulator to rebuild and sustain the patient's own immune system.