In a concerted effort to reduce the inappropriate prescribing of antibiotics for non-bacterial infections, Entvantage Dx is structured around development of in-office diagnostic test kit designed to determine the cause of ear, nose and throat illnesses. The firm's in-office diagnostic test kit provides primary care and ENT physicians with rapid diagnostic tests by which to determine the causes of ear, nose and throat illnesses. By qualitatively identifying the three major bacterial sinusitis pathogens and providing differentiation from viral sinusitis infections, physicians are enabled only to prescribe antibiotic treatment for patients who have bacterial sinusitis therefore reducing the unnecessary prescription of antibiotics.