Quest Diagnostics provides diagnostics testing, information & services for the healthcare industry. We offer routine tests, including cholesterol level, blood chemistries, blood cell, urinalysis, pregnancy/prenatal tests, alcohol/substance-abuse tests, genetic-based testing and anatomic pathogy services.

Quest Diagnostics as a whole has over 4,000 couriers that transport 550,000 specimens per day & have over 150 million patient encounters per year. Locally, on average, we process thousands of specimens per night, received from locations throughout the Bay Area. The majority of test results are then released by 8:00 am the following day.