Arrayit Corporation has been approved for in-store allergy testing promotions by a major United States retailer. Arrayit sales and marketing experts will conduct allergy test promotions in-store, and medical professionals at in-store clinics will collect finger stick blood specimens. Two thousand retail locations nationwide averaging 3,000 customer visits per store per day would give Arrayit access to 6 million retail customers daily, creating the potential for exponential sales growth. This promotional campaign required rigorous vetting and high-level corporate approval by the retailer, which reports revenues exceeding $50 billion annually. Arrayit recently completed an allergy testing pilot program for a retail chain, established a nationwide network of 1,700 sales professionals to sell and distribute the company’s finger stick microarray tests, met with top officials at the United States Food and Drug Administration (FDA) regarding FDA approval of a major product line, reported the sale of clinical instrumentation to the FDA, and signed allergy testing contracts with a consortium of 178 medical clinics. Doctors can use allergy test results as a guide to prescribe allergy medicines, immunotherapy, food elimination and lifestyle changes. The availability of allergy medicines and immunotherapy products at retail stores, allows customers to incorporate an allergy test into a convenient family shopping experience.