Allergy 1•2•3 is a fee-for-service product provided by PREVENTATIVE HEALTH AND DIAGNOSTICS, a company devoted to providing state-of-the-art products and services to the medical community. PREVENTATIVE HEALTH AND DIAGNOSTICS offers innovative solutions to clinics to increase their profitability and patient satisfaction. Mission We strive to provide innovative, high-quality allergy care to more patients through greater accessibility and convenience, while offering support to our partnered providers.