Spear Bio is a biotechnology startup based in Woburn, Massachusetts, established in 2021. The company specializes in developing a proprietary platform known as Successive Proximity Extension Amplification Reaction (SPEAR), which enables highly sensitive, wash-free immunoassays. Focused on early disease diagnosis and monitoring, Spear Bio delivers solutions that allow for accurate measurements of low-abundant biomarkers, aimed at enhancing patient outcomes and advancing global health. The company values innovation, collaboration, and scientific excellence, and caters to both researchers and clinicians in the healthcare sector.