Complementary Methodologies For Size Heterogeneity Analysis Of Antibody Impurities

Understanding size-based impurities is essential to ensuring the safety and performance of monoclonal antibodies as their use in targeted therapies continues to expand. Combining orthogonal techniques reveals a more complete picture than either method alone. Under denaturing conditions, capillary electrophoresis with SDS delivers high-resolution insight into low molecular weight species such as light and heavy chains. In contrast, size exclusion chromatography preserves native structure, making it indispensable for accurately quantifying high molecular weight aggregates like dimers and trimers. When used together, these approaches provide complementary data that align closely with established reference materials. A dual-platform strategy strengthens confidence in purity assessments, supporting more robust characterization, quality control, and development of therapeutic antibodies.

See how integrating these techniques can elevate analytical precision.