California's Leading Diagnostics Laboratory

        About L&L

        Learn Why We're The Best Laboratory Around

        L&L Diagnostics is a high-complexity, CLIA-certified reference laboratory. We offer a full range of testing, ranging from general chemistry to molecular microbiology and COVID-19 tests. Our mission is to provide stellar services to patients and physicians while delivering accurate and rapid test results.

        For those clinics and physicians looking for a dedicated laboratory, L&L Diagnostics may be the solution for you. L&L Diagnostics is equipped to provide services for all types and sizes of clinical practices. From molecular, to chemistry, to hematology we have them covered.
        Full Range of Tests

        L&L Diagnostics offers chemistry, hematology, endocrinology, and microbiology testing, in addition to tests for infectious and autoimmune diseases.

        COVID-19 Testing

        We provide PCR (the "Gold Standard") COVID-19 tests. This test targets three different SARS-CoV-2 genes to quickly and accurately determine if a patient is infected with the virus.


        The Clinical Laboratory Improvement Amendments (CLIA)programcertifies laboratories who meet federal standards of testing. The certification is reassurance of our attention to safety and quality.

        Customer Representatives

        Our customer service representatives are highly experienced and assist with ordering supplies, providing results, and answering patient and physician questions.

        Competitive Services

        We provide competitive turnaround times with our testing. We also have dedicated and efficient couriers for daily specimen pick-up and report delivery.

        STAT Testing

        L&L Diagnostics provides STAT testing for immediate and emergency situations. We're there when you need us with our white glove service.

        Start Testing Today!
        Get Accurate, Reliable Results With Us

          Why We're Different

          Our customer service and quality control measures set us apart.
          • 12 - 24 Hours turnaround time
          • Inpatient treatment programs
          • Outpatient recovery centers
          • Convenient operating hours