The global leader in high-quality SPF products and services

Innovative provider of bioprocessing materials, laboratory products, and diagnostic services that support biologic development and manufacturing  

Unrivaled commitment to quality, biosecurity, and reliability

Introducing AVS Bio

After 30 years of operation as a subsidiary of Charles River Laboratories, AVS Bio is now an independent company

About AVS Bio

  • We are the world’s largest and most trusted producer of Specific Pathogen Free (SPF) eggs and adjacent laboratory products and services for the development and manufacture of biologics
  • We are committed to quality, biosecurity, and scientific innovation and have set the standard for our industry for over five decades
  • We are dedicated to the relentless improvement and expansion of our offerings to meet the evolving needs of our dynamic customer base across both human and animal health markets

Key Facts & Figures

Years of Experience
SPF Eggs Produced Since Inception
US Production Houses
Years Licensed by USDA
Supported Our First IgY Clinical Study

Our Project Experience & Capabilities

We provide our customers with a broad range of products and services to address their development and large-scale manufacturing needs. We supply leading manufacturers with critical bioprocessing inputs, including SPF eggs, antigens, and cell products. In addition, we offer numerous diagnostic testing and manufacturing support services, including virus propagation and isolation, custom cell production, and quality control testing. We also support the development of new therapeutics by providing antibodies such as IgY for use in clinical trials.

Our Products & Services

Click here for Terms and Conditions of sale

Our History


Originally founded as SPAFAS (Specific Pathogen Free Avian Supplies), we started as an egg production and testing laboratory in Connecticut


We were acquired by Charles River Laboratories and have since more than doubled our manufacturing capacity and laboratory footprint, cultivated relationships with customers and manufacturing partners around the world, and built new capabilities across diagnostic and bioprocessing applications


After 30 years of operating as a subsidiary of Charles River Laboratories, we reestablished ourselves as an independent company to begin a new chapter of accelerated investment across the Immunology landscape


We are a scientifically-driven and well-capitalized team devoted to innovation and advancement in supporting our customers across both the human and animal health markets

The AVS Advantage

  • We are the global leader in SPF egg production, focused on providing high-quality SPF eggs and adjacent products and services for use in manufacturing vaccines, therapeutics, and other biologics.
  • At AVS Bio, we are committed to the humane treatment of animals. Our eggs are produced in our over 40 dedicated houses using sustainable practices, and we are dedicated to ensuring that our hens are treated with the utmost care and respect.
  • Our eggs are carefully inspected, cleaned, and tested to ensure they meet the strict quality standards required for vaccine production. We are committed to providing our customers with the highest quality eggs and cell-based products.
  • Our scientific and manufacturing expertise allows us to offer a broad range of products, including primary chicken embryo cells and USDA-licensed FFM and diagnostic products. Our IgY products are produced utilizing our SPF hens and are tested to ensure that they meet the highest quality and purity standards.

Contact Us

Contact us if you would like to learn more about our products & services.
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