Biolayer interferometry (BLI) is a non-labeling technology based on the principle of light interference. It has the advantages of simple operation, short detection time, less sample consumption, and can directly participate in analysis and detection without manual labeling. Through the real-time monitoring of optical interference signals, BLI technology can be widely used in the analysis and rapid detection of biomolecular interactions. The technology relies on the phase shift-wavelength correlation created between interference patterns off of two unique surfaces on the tip of a biosensor.