Why Choose GRI for PCR & Clinical Lab Testing


We provide the gold standard in clinical lab testing

GRI Labs is an expert provider of high-quality clinical lab testing with an extensive test menu serving a variety of medical specialties. We have a team of trained and experienced technologists and scientists working with the latest laboratory technology. 

Our team is committed to providing our clients not only with reliable test results, but also with a great customer experience. Our personalized customer service helps you to provide the best care for your patients.

GRI Labs accepts Medicare, Medicaid, Medi-Cal, as well as a variety of private insurance plans. Please check with our client services team for the most up-to-date insurance information.

Our testing

We use innovative testing technology to provide a comprehensive range of diagnostic tests, including real-time PCR molecular testing that delivers quicker and more reliable results.

Our standards

Our process aligns with industry best practices to deliver fast & accurate clinical lab testing with excellence in quality, service, and access.

Our team

We have a knowledgeable and helpful team of scientists, laboratory technologists, management, and administrative staff providing unmatched customer service.

Our standards for clinical lab testing


You can trust our results. GRI Labs consistently earns proficiency ratings on par with the top diagnostic labs in the country.

Turnaround time

We deliver most test results in 24 to 48 hours, allowing providers to diagnose patients and begin treatment quickly.


Our staff members are available to answer your questions and address your needs with customized solutions.


Our Testing

Our comprehensive testing capabilities include solutions tailored specifically to the needs of general health and wellness, skilled nursing and assisted living, women’s health, behavioral health, and pain management specialties.

We are continuously updating our test menu to bring you the latest technology including PCR testing with antimicrobial resistance markers, and to provide all the testing services your practice requires.

Visit our Test Menu page for more information and a complete list of our tests.

Our Team

At GRI Labs, we are extremely proud of our dedicated staff. Our caring and friendly approach to clinical lab testing provides a personal touch that big labs can’t match. We take the time to get to know you, listen to your concerns, and find solutions that best fit your needs.

GRI Labs provides our clients with an efficient and trustworthy experience so you can focus on the best treatment plan for your patients. Feel free to reach out to us directly with your questions.

Robert Cathey

CEORobert Cathey

Mr. Robert Cathey M.B.A., M. Ed. has more than twenty-five years of clinical and health care administration experience. Mr. Cathey has held various health care leadership roles which include Chief Executive Officer of Champion Medical Center – Baton Rouge, Executive Director of Cardiovascular Services, Vice President of Business Development for a general acute care hospital, Vice President of Operations for an urgent care and practice management company, and several clinical director positions. Mr. Cathey holds a Master of Business Administration degree from Liberty University, a Master of Education Counseling degree from Northern Arizona University, and a Bachelor of Science degree from the University of Nevada, Las Vegas.

Dr. Andrew Gould

Director of Laboratory ServicesDr. Andrew Gould

Dr. Andrew Gould has over 10 years of laboratory experience in academic research and clinical practice.  He also has experience with cell and molecular biology, protein chemistry, and toxicology. As Director of Laboratory Services at GRI, Dr. Gould oversees laboratory operations.  He earned Bachelor of Science degrees in Biology and Chemistry at the University of California, Irvine. and earned his Ph.D. in Molecular Pharmacology and Toxicology from the University of Southern California School of Pharmacy.

Mona Patel

Director of Client ServicesMona Patel

Ms. Monalisa Patel M.B.A., M.Sc. IT has more than six years of experience in planning, developing and implementing complex technical solutions. Ms. Patel is a logical thinker and a strong communicator and is highly skilled in management of technical and cross-functional teams, vendor/client relationships, and procurement and contract administration. She has a solid understanding of business requirement gathering and business process modeling.

Dr. Craig A. Voss

Medical DirectorDr. Craig A. Voss

Dr. Craig Voss is responsible for oversight of the lab to assure compliance with all applicable regulations. Dr. Voss ensures that personnel are competent to perform test procedures, tests are performed proficiently, results are recorded accurately and reported promptly. Prior to joining GRI Labs, Dr. Voss was a pathologist at Quest Diagnostics, where he studied tissues, cells and body fluids in order to help other physicians determine diagnoses. He has a Doctoral degree from Tulane University and a certificate of qualifications for the practice of Anatomic and Clinical Pathology from The American Board of Pathology.

Certifications & accreditations

GRI’s certifications and accreditations for clinical laboratory services provide proof of our professionalism and dedication to upholding the highest standards in the industry.

Clinical Laboratory Improvement Amendments
California State of Health & Human Services
Nevada State of Health & Human Services
California Covid Task Force

We are always looking for talented peopleJoin the GRI Labs team