Comparability Protocols Explained: Ultimate Guide to Biologics Regulatory Compliance Mastering Comparability Protocols: Compliance-Ready Guide for Biologics and Biosimilars Introduction to Comparability Protocols and Their Importance Comparability protocols are structured, prospective plans submitted to regulatory agencies to demonstrate that proposed changes in manufacturing, analytical methods, or product processes will not adversely affect the safety, efficacy, or quality of a biologic. Regulatory bodies like the FDA, EMA, and CDSCO rely on comparability protocols to evaluate whether process modifications—such as scale-up, site transfers, or raw material changes—can be implemented without compromising product integrity. By 2025, comparability protocols are widely recognized as risk-mitigation tools…