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, enabling applications like immunoassays, cell separation, and targeted drug delivery. Their amine groups facilitate covalent bonding with biomolecules, enhancing stability and specificity. These beads are also employed in flow cytometry as calibration standards and in the study of cellular interactions due to their uniform size and surface properties. Additionally, they are utilized in diagnostic kits for detecting pathogens or biomarkers, offering high sensitivity and reproducibility. In material science, they act as templates for creating nanostructured materials or coatings with tailored functionalities.