Find your local O Fallon, MO Labcorp location for Laboratory Testing, Drug Testing, and Routine Labwork

Need blood work or lab tests in O Fallon, MO? Visit Labcorp for a wide range of services including labwork or drug testing. Options for online ordering or walk-ins.

Locate lab services near you. Make an appointment for Labcorp blood work or drug tests. Walk-in or book online for a convenient time.

Labcorp provides laboratory testing services, health tests, and tools for managing your health conveniently online.

Access LabcorpLink for secure, seamless management of lab testing, results, appointments, and healthcare services tailored to your needs.

Labcorp helps patients, providers, organizations, and biopharma companies to guide vital healthcare decisions each and every day.

Labcorp's help center allows you to search frequently asked questions, access contact information and resources to answer your lab questions.

Labcorp is a leading global life sciences company providing diagnostic and drug development services to improve health and lives worldwide.

Labcorp is a global life sciences and healthcare company harnessing science for human good. Every day, our mission is to improve health and improve lives.

550 17th Ave, Suite 300, Seattle, WA 98122 Local Telephone: 206-861-7000 Regional/National Toll-free Telephone: 800-676-8033