Quest Diagnostics®
POWERING AFFORDABLE CARE
For more than 25 years, healthcare providers, hospitals, and health systems in California have turned to Quest Diagnostics for cutting-edge solutions and insights that inspire action for better health. Never was that more apparent than during the COVID-19 pandemic.

Days before COVID-19 was declared a worldwide pandemic, we took immediate action to provide COVID-19 testing services—and we’ve never stopped.

Our San Juan Capistrano laboratory was the first Quest lab in the nation to provide COVID-19 testing

Over 72 million COVID-19 molecular tests performed to date, with 12 million tests processed here in California
Invested in building healthier communities across California
As we transition to a healthcare environment reshaped by COVID-19, we are continuing to evolve and strengthen our testing capabilities and infrastructure to support better patient care and public health. Through this pandemic and the next, and everything in between, we are building the future of diagnostics to help providers do more for their patients.
Making a difference 
in California with
Quest is making a difference in California
Embracing diversity in healthcare and making screening more accessible
We’re proud of our:

Status as a chosen laboratory provider for the California Prenatal Screening Program, a comprehensive public health service that makes prenatal screening available to all pregnant people in the state who want it

Participation in the CDC’s Increasing Community Access to Testing (ICATT) for COVID-19 program, which is designed to support free COVID-19 laboratory testing for patients in communities that have been disproportionately affected by the pandemic

Partnerships with local organizations committed to address the health needs of LGBTQ+ communities, including National AIDS Memorial, APLA Health, PRC, and AIDS Walk

Collaboration with the CDC to help address the recent mpox virus outbreak and enable faster diagnosis with our Monkeypox Virus DNA, Real-Time PCR test

Sponsorship of American Heart Association’s (AHA) 2022-2023 Hispanic Serving Institution Scholars Program, which provides financial support for students pursuing a career in healthcare

This year’s class included students from California State University, Dominguez Hills, and California State University, Long Beach

Work with the Los Angeles County Development Authority through our Quest for Health Equity Initiative to provide comprehensive, no-cost laboratory testing for LA County residents who are impacted by lead-based paint in their homes
Choose the laboratory that supports your commitment to improving the health of communities across California. 

Contact us to learn more about how we can work together to make a difference:

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