C3d and Food Sensitivities
Presented by Dr. Marjorie Peak
Join us for an evidence-based clinical webinar on C3d and Food Sensitivities: From Complement Biology to Clinical Application, designed specifically for functional and integrative healthcare providers. This 45-minute session explores the role of the complement system in immune amplification and how measuring C3d alongside IgG may help prioritize clinically relevant food triggers. You will learn how C3d links innate and adaptive immunity, why complement activation can magnify inflammation, and how to interpret IgG + C3d food sensitivity panels within a structured elimination and re-challenge protocol. Walk away with a practical framework for integrating C3d testing into patient care while maintaining alignment with gold-standard clinical evaluation..
Key Takeaways:
- Understand the immunologic rationale for adding C3d complement testing to IgG food sensitivity panels.
- Learn how to interpret IgG-only vs. IgG + C3d results to prioritize inflammatory food triggers.
- Apply a structured elimination and re-challenge protocol using C3d data to improve dietary precision and patient compliance.
- Recognize appropriate use cases, limitations, and evidence considerations for complement-based food sensitivity testing.










