Exagen Inc. is a biotechnology company focused on advancing diagnostic solutions for autoimmune diseases through its proprietary Cell-Bound Complement Activation Products technology, marketed under the AVISE brand. Headquartered in Vista, California, Exagen is dedicated to enhancing patient care by providing tests that enable precise diagnosis and management of conditions such as lupus and other inflammatory disorders. With a commitment to innovation and clinical validation, the company aims to empower healthcare providers with actionable insights to improve treatment outcomes.