Exceptional Science.
Uncompromising Quality.

Your regulatory compliant large molecule bioanalytical CRO

Custom Biologics is a global leader providing specialized, GLP-compliant, assay development, validation and testing services to support the pre-clinical/CMC and clinical stages of biopharmaceutical drug development.

Latest Resources

Article
January 19, 2026
FDA Just Changed Clinical Trial Requirements for Biosimilars: How to Leverage Bioanalysis for Successful Submissions
Discover how the FDA's new guidelines for biosimilar development eliminate the need for clinical efficacy studies, emphasizing bioanalytical, pharmacokinetic, and immunogenicity data. Learn how to adapt your strategy and leverage high-quality analytics to achieve successful submissions and fast-track development.
Article
January 19, 2026
AAV Potency Assays in Preclinical CMC: Key to Successful Gene Therapy Development
Learn why early AAV potency assay development is key to smooth tech transfer, regulatory success, and phase-appropriate CMC strategies in gene therapy.
Article
February 7, 2025
4 Pillars of a Robust Pharmaceutical Quality System (PQS)
Discover the 4 pillars of a robust Pharmaceutical Quality System (PQS) that ensures drug quality and regulatory compliance. Learn how implementing quality-driven processes, maintaining a clean and safe environment, fostering communication and transparency, and ensuring consistent quality across platforms help meet Health Canada and U.S. FDA standards for drug development.

Ready for the next stage of your drug development journey? Let’s plan next steps together.

Whether you have a specific project you’d like to discuss, or have a question about our suite of biopharmaceutical assays, we look forward to hearing from you.

Contact us today