Diagnostic and Laboratory Services

Understanding what is happening inside your body is the first step to making you feel better. Our diagnostic services offered to patients – even after hours – are the tools needed to properly determine your condition and begin the road to recovery. From lab work and laboratory services to imaging and sleep studies, our goal is timely results.

Some diagnostic services require a prescription from your doctor and depending on your test you may be required to schedule an appointment. For tests such as x-rays and blood-work, you may simply walk-in for service. Please be sure to obtain all referrals and bring prescriptions or doctor’s orders if you are making the appointment yourself.

Imaging and Radiology

At GRMC, we provide diagnostic, therapeutic and consultative radiologic services using the latest advanced technology.

Learn More About Imaging and Radiology


Cardiovascular services offered at GRMC include catheterization lab, interventional radiology, cardiopulmonary, and cardiac rehabilitation. Learn more about our cardiovascular services.

Learn More About Cardiovascular Services

Lab Services

At GRMC lab services play a vital role in the diagnosis and treatment of patients. Your physician may order you a specific lab to get a better understanding of your health.

Learn More About Lab Services

Infusion Therapy

Infusion therapy is prescribed when a patient’s condition cannot be treated effectively with oral medication alone. Infusion therapy is available for both hospitalized patients, as well as those who do not require hospitalization but need to receive treatments on a regular or infrequent basis.

Learn More About Infusion Therapy


A good way to examine the body is from the inside, and at GRMC we have a highly skilled team who will examine, diagnose and treat gastroenterological conditions.

Learn More About Endoscopy Services

Sleep Studies

GRMC understands the importance of a good night’s sleep to your health. The Sleep Center at GRMC – in conjunction with South Texas Sleep Diagnostics – is a program that offers a comfortable environment for a proper diagnosis.

Learn More About Sleep Studies