Leading the Way in the Rio Grande Valley

South Texas Health System McAllen provides clinical laboratory services 24 hours a day, seven days a week. Our clinical laboratory stays current with technology by adding new testing procedures. It's the first automated laboratory system in the Valley to assists with delivering medication to patients.

To make an appointment with the Laboratory Department, please call 956-632-4234.

Available Services

We offer the following services:

  • Chemistry
  • Hematology
  • Coagulation
  • Urinalysis
  • Blood Bank
  • Microbiology
  • Immunology/Serology
  • Special Chemistry

South Texas Health System McAllen's laboratory is fully accredited and certified by the College of American Pathologists. It is also the first in the Rio Grande Valley to operate StreamLAB, an automated lab system.

Newborn Screening Recognition

Read about our thorough tests that recognize early disease detection that will prevent disease damage to our newborn population.

Newborn Screening Recognition


Pathologists at South Texas Health System McAllen have been at the forefront in the diagnosis and analysis of inflammatory, infectious and neoplastic diseases. The Department of Pathology offers a wide range of diagnostic services in anatomic pathology that includes the following:

  • Frozen section diagnosis
  • Surgical pathology
  • Cytology
  • Cytogenetics
  • Immunohistochemistry

In areas of surgical pathology, gastrointestinal pathology, breast and gynecological and renal pathology are three of the busiest subspecialties, both for inpatient and external consulting work.

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