Quest Diagnostics Incorporated is a prominent provider of extensive diagnostic information services, operating throughout the United States and in international territories. The company specializes in developing and delivering a broad spectrum of diagnostic insights, including standard routine tests, highly specialized and advanced clinical analyses, anatomical pathology examinations, and other crucial diagnostic information services. These services are primarily offered under the flagship Quest Diagnostics brand, supplemented by specialized brands such as AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum.