Affordable Lab Services

When you need DNA, drug, alcohol, or DOT testing, rely on Fastest Labs® for professional lab testing services in McAllen, TX. With 10 years of industry experience, we have built a superior reputation for fast, accurate testing and outstanding customer service. We're proud to have some of the cleanest facilities around, and our certified collectors work hard to ensure your comfort and privacy throughout the testing process. We prioritize convenience with walk-in testing availability and on-site testing for businesses. Contact us today for your testing needs.

Labcorp is a global life sciences and healthcare company, and our mission is simple: improve health, improve lives. We leverage science, technology and innovation to accomplish our mission-getting you answers that help you make clear, confident decisions about your health.Our Patient Service Centers offer routine medical testing-as well as recommended screenings based on your age and gender. It's easier than ever to make an appointment. Testing results will be available to you in your Labcorp Patient Portal. Quick and easy information both you and your healthcare provider can use to improve your health outcomes. And walk-ins are welcome.