The LRA (lymphocyte response assay) delayed allergy or delayed hypersensitivity tests are known for their reliability, reproducibility & accuracy of 97%+. Delayed allergies can contribute to many chronic conditions including: migraines, autoimmune problems, lupus, fibromyalgia, asthma, diabetes, thryroiditis, and rheumatoid arthritis, just to name a few. Identifying common foods and chemicals that are stressing your immune system