The FIA-Sta 4000, manufactured by NodFord International Co., Ltd, is a state-of-the-art in-vitro diagnostic platform. It utilizes Time-Resolved Fluorescence Immunoassay (TRFIA) to provide high-sensitivity results comparable to large-scale chemiluminescence systems. By utilizing a time-delay technique to eliminate background noise, it ensures high precision for a wide range of clinical applications including thyroid function, gastric diseases, tumor markers, and COVID-19. It is designed for hospitals and laboratories requiring reliable, automated throughput.