Quidel Corporation is engaged in the development, manufacturing and marketing of diagnostic testing solutions. These diagnostic testing solutions are separated into four product categories: immunoassays, molecular assays, virology and specialty products. The Company sells its products directly to end users and distributors, in each case, for professional use in physician offices, hospitals, clinical laboratories, reference laboratories, universities, retail clinics, pharmacies and wellness screening centers. Its diagnostic solutions aid in the detection and diagnosis of critical diseases and other medical conditions, including infectious diseases, women's health, gastrointestinal diseases, autoimmune diseases, bone health and thyroid diseases. The Company provides diagnostic testing solutions under various brand names, including Quidel, QuickVue, QuickVue+, MicroVue, FreshCells, D3 FastPoint, Super E-Mix, ELVIS, Sofia, Quidel Molecular, Amplivue, Lyra and Thyretain.