AZ Business magazine and BestCompaniesAZ present the Most Admired Companies program each year with the goal of recognizing organizations that excel in these six key areas: Customer opinion; diversity, equity, and inclusion; innovation; leadership excellence; social responsibility; and workplace culture. One of Arizona’s Most Admired Companies for 2021 is Sonora Quest Laboratories.

READ ALSOHere are Arizona’s Most Admired Companies for 2021

With hundreds of nominations representing the most innovative, impactful and successful companies in Arizona, being one of Most Admired Companies of 2021 shows that these companies truly represent the best in Arizona business. The Most Admired Companies for 2021 will be honored at an awards dinner Oct. 7, 2021, at Pointe Hilton Resort Tapatio Cliffs in Phoenix. Title sponsors for the Most Admired Companies awards are WaFd Bank and Taylor Morrison. For sponsorship information, email For information about the event honoring the Most Admired Companies, email or click here. will be spotlighting one of Arizona’s Most Admired Companies each day leading up to the awards dinner.

Sonora Quest Laboratories

Most Admired Company: 2010-2019, 2021

Top Arizona executive: David Dexter, president and CEO

What it does: Offers a comprehensive menu of routine and specialty lab testing services.

Admirable trait: Sonora Quest is leading the way with Direct Access Testing (DAT), also known as direct-to-consumer testing, throughout Arizona, which allows consumers to order laboratory tests without a physicians’ request. Consumers can select from a menu of affordably priced lab tests to track personal wellness goals or monitor a chronic condition. Since its launch, My Lab ReQuest has enabled consumers in Arizona to take control of their health and to drive improved health outcomes.