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Highly sensitive ELISA kits for measurement of host cell proteins and process-related impurities.

Cygnus specializes and offers custom antibody and assay development services for host cell protein detection.

Antigens, sample diluents, conjugate stabilizer/diluents, coating and wash buffers, and substrates for immunoassays.

Outsource to the Experts in Bioprocess Impurity Analysis


  • Tap into our proven bioprocess impurity assay development technologies
  • Employ well-characterized assays to optimize purification process early in drug development
  • Assure regulatory compliance by using our state-of-the-art Antibody Affinity Extraction and Mass Spectrometry orthogonal methods
  • Secure long-term uninterrupted supply of critical reagents & kits

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Best Practices in Host Cell Protein Assay Qualification and Bridging to a New Assay


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