Latex beads, amine-modified polystyrene, are widely used in biomedical research and diagnostics. They serve as solid supports for the immobilization of proteins, antibodies, and nucleic acids, making them essential in immunoassays and DNA hybridization techniques. These beads are also employed in cell separation and sorting processes, such as magnetic-activated cell sorting (MACS), due to their ability to bind specific cell types. In addition, they are utilized in drug delivery systems, where their surface modification allows for targeted release of therapeutic agents. Their uniform size and stability make them ideal for calibration standards in flow cytometry and particle size analysis. Furthermore, they are applied in the development of biosensors, enhancing sensitivity and specificity in detecting biological molecules.