Biocompatibility is a critical aspect in the development of medical devices and materials, ensuring their compatibility with biological systems. It involves assessing the response of living tissues to these materials, aiming for minimal adverse reactions. From surgical implants to drug delivery systems, biocompatibility plays a pivotal role in enhancing patient safety and treatment efficacy. Researchers employ various tests, such as cytotoxicity and hemocompatibility assays, to evaluate how materials interact with cells and blood. The goal is to create medical solutions that seamlessly integrate with the body, minimizing the risk of inflammation or rejection. As technology advances, innovative biomaterials with superior biocompatibility are paving the way for ground-breaking medical interventions, fostering a new era of patient-centered care and therapeutic success.