SEKISUI Diagnostics | 15,665 followers on LinkedIn. Headquartered in Burlington, MA, for 40 years SEKISUI Diagnostics has been committed to helping improve the lives of patients by providing innovative medical diagnostics to physicians and laboratories. We continue to invest in the areas of diabetes, infectious disease, coagulation, diagnostic enzymes and automated systems, and have a leading position as a provider of rapid tests in the US and high throughput coagulation systems in Japan. Our workforce spans six sites located in four countries.