It is a fully automated immunoassay system that allows random and continuous access, as well as priority processing and automatic re-analysis using chemoluminescent micro-particle immunoassay technology. CMIA technology is used to determine the presence of antigens, antibodies and analytes in samples. The scalable design of the ALINITY I allows one or more sample processing modules, in multiple configurations, with a system control module to physically join together to form a single workstation.