Thank You for Over 40 Years of Trust Since 1984, ELISA/ACT Biotechnologies (EAB), home of the LRA by ELISA/ACT testing, has been a pioneering force in personalized immunology, offering the most comprehensive and clinically insightful ex‑vivo testing for delayed hypersensitivities. Developed by Russell M. Jaffe, MD, PhD, CCN, NACB, the patented Lymphocyte Response Assay (LRA) by ELISA/ACT [...]