摘要:ELISA (enzyme-linked immunosorbent assay) is a reliable and sensitive method of detection technique. It is commonly used in the daily research of scientific institutions and laboratories world widely. Although ELISA has an acceptable sensitivity and accuracy, when it comes to timely information about urgent detections, conventional ELISA lacks the ability to provide that. In this article, we introduce various types of modifications of ELISA and their applications in many fields, including the clinic diagnosis and the food detection, as well as the introduction of practical ELISA systems.