Microbiology Specialty Lab is a locally owned and operated full service clinical laboratory. Established in 1998, Microbiology Specialty Lab has provided quality laboratory testing to Rio Grande Valley physicians, clinics and hospitals for 13 years.



Microbiology Specialty Lab is a CAP (College of American Pathologists) certified laboratory. CAP certification is the highest achievable certification in Laboratory Science and reflects the high standards Microbiology Specialty Lab places on our services.

In addition to providing full laboratory services in hematology, clinical chemistry, immunology, coagulation, drug testing and urinalysis, MSL specializes in Bacteriology, Parasitology, TB and Mycology testing. We are currently the only area lab providing the new effector T-cell based blood test for Tuberculosis.

Our highly trained technical staff not only provide skilled phlebotomy services but specialize in specimen collections such as throat and wound cultures and hair, skin and nail scrapings.

Microbiology Specialty Lab is open 7 a.m. – 6 p.m. Monday through Friday, and 8 a.m. – 12 p.m. on Saturday for phlebotomy services and specimen drop-off. We provide courier service for specimen pick-up at area facilities between 7 a.m. – 7 p.m. STAT testing is available upon request.