During transfection workflows, trace levels of transfection reagents can remain in the final material even after downstream purification. Our residual testing services deliver highly sensitive and reliable measurement of transfection reagent carryover in biological samples, helping to ensure the quality, safety, and regulatory readiness of your final product. Using validated analytical methods, we detect trace levels of residual transfection reagents to support process optimization, lot release, and downstream risk mitigation. This service is available for our portfolio of key transfection reagents and enhancers and can be seamlessly integrated into your development and manufacturing workflows.