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Diagnostics Research Group
4410 Medical Dr Ste 360
San Antonio, TX 78229
(210) 263-1707

Call today to sign up for clinical studies in San Antonio, TX!

Clinical Studies in San Antonio, TX

Allergy Studies San Antonio, TX Diagnostics Research Group performs clinical research studies that evaluate the safety and effectiveness of new drugs, treatments, and medical devices. Patients who enroll in our clinical studies can expect quality care at no cost during their participation.

Those interested in volunteering for clinical studies or a clinical trial have access to free health screenings that can include cholesterol tests, blood pressure, blood sugar, breathing, and allergy studies. Once a volunteer qualifies for a study, he/she can expect to receive study medication, study related medical exams, and compensation for time and travel.

The amount of compensation received varies—depending on the type of research studies being conducted and the participation level of the patient. In addition, all parking tickets are validated when patients visit our research facility for study related appointments.

Participate in research studies or clinical studies today!

We perform clinical studies and research studies to improve your health!

Our facility is located in the Texas Neurosciences Building (TNI Building) in the South Texas Medical Center Clinical Studies San Antonio, TX of San Antonio, TX. Diagnostics Research Group is staffed with board certified medical investigators who are extensively trained in both medical practice and clinical research.

Currently, eleven members of our staff are certified by the Academy of Clinical Research Professionals (ACRP), and we are proud to say that all of our clinical research coordinators are nurses. Since opening our doors in June of 2000, we have participated in more than 200 studies including asthma studies and COPD studies.

Our Principal Investigators include: Charles P. Andrews, MD, CPI, John R. Holcomb, MD, CPI, Randell C. Bell, MD, and Nora L. Walker, MD. We are proud to serve San Antonio, TX and the surrounding areas.

We concentrate on many different therapeutic areas, such as: allergy symptoms, pulmonary, internal medicine, vaccines, sleep disorders, women’s health, and more. We have the expertise to perform studies in the following areas:

  • Allergies (Seasonal Allergic Rhinitis including: Ragweed allergies, Cedar allergy, and Oak allergies as well as Perennial Allergic Rhinitis including molds, dust, and dust mites)
  • Respiratory Disorders (Asthma symptoms, COPD symptoms, Pulmonary Fibrosis, Pulmonary Arterial Hypertension)
  • Internal Medicine (Hypertension, High Cholesterol, Constipation, Abdominal Pain, Osteoarthritis, Irritable Bowel Syndrome)
  • Women’s Health (Dyspepsia, Osteoporosis, Constipation, Urinary Incontinence)
  • Vaccines (Influenza, Herpes Zoster, Pneumonia, and Rotavirus)
  • Sleep Disorders (Insomnia)
  • Medical Devices (Inhalers)

Call our office in San Antonio, TX now if you have a cedar allergy or other type of allergy!

Research Studies San Antonio, TX Vision and Mission Statement:

Vision: We accept the challenge of being an innovative clinical research site by providing the highest level of service to our patients and sponsors.

Mission: To become the industry leader of independent clinical research sites by:

  • Performing at the highest level of integrity and competence as judged by our subjects and sponsors.
  • Investing in the development and maintenance of competencies and productivity of all members of our company team.
  • Following, in all instances, Good Clinical Practices.
  • Offering quality studies to diverse subject populations in the San Antonio area.

Call Diagnostics Research Group today, and ask about our current or future studies. For more informationAsthma Studies San Antonio, TX about our research site, current studies, or for contact information, please visit us online at

Diagnostics Research Group is now enrolling in the following:

  • Allergy Studies
  • Asthma Studies
  • Emphysema/COPD Studies
  • High Blood Pressure Studies
  • High Cholesterol Studies
  • Idiopathic Pulmonary Fibrosis Studies
  • Chronic Constipation with Abdominal Bloating Studies
  • Irritable Bowel Syndrome with Diarrhea Studies

If you have a Cedar allergy, or any other allergy, give us a call today!

Proudly serving San Antonio, TX and the surrounding areas.


 Know of anyone who can benefit from research? We have a spot for them.
Do you have Asthma?


Do you have COPD?


Do you have Chronic Cough?


Do you suffer from Osteoarthritis?


Do you have Irritable Bowel Syndrome (IBS)?


Does your child have dust allergies?


Attention Men and Women: Are you interested in participating in a Research Study for an investigational vaccine against influenza?


Do you have high blood pressure?


Do you suffer from constipation?


Call us 210-263-1707 or visit

Products & Services

Vision and Mission Statement:

Vision: We accept the challenge of being an innovative clinical research site by providing the highest level of service to our patients and sponsors.

Mission: To become the industry leader of independent clinical research sites by:

Treatment for allergies, Treatment for respiratory disorders, Internal medicine, Women's health, Vaccines, Treatment for sleep disorders, Medical devices (inhalers).

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Diagnositics Research Group

Diagnostics Research Group Launches New Website
Tue Jul 02 15:34:00 EDT 2013


New Osteoarthritis Treatments
Tue Jul 02 11:44:44 EDT 2013

Diagnostics Research Group was recently featured in a BIO News Texas article. Read the full  article now.

Fun Events
Tue May 07 10:10:59 EDT 2013

We are happy to announce that DXRG will be attending two fun events on May 18. You can come see us at the Arthritis Walk at Incarnate Word High School from 7am to 11am and at the Diabetes Expo at the San Antonio Convention Center from 9am to 3pm. Come out, bring some friends and say hi!

Osteoarthritis Enrollment
Wed Mar 27 10:17:10 EDT 2013

Good morning, all! Enrollment is now underway for our Osteoarthritis (OA) of the knee or hip study. If you are 40 years of age or older, have OA of the knee or hip, and are currently taking some sort of pain reliever, give us a call at 210-692-7157 today!

Drug Allergies
Sat Nov 17 10:00:00 EST 2012

Drug allergies and reactions are among the most serious of all allergies. They may lead to anaphylaxis, which can often be deadly.

On Staying Healthy
Sat Nov 03 11:00:00 EDT 2012

"The only way to keep your health is to eat what you don't want, drink what you don't like, and do what you'd rather not." -Mark Twain

Sat Oct 20 10:00:00 EDT 2012

Antarctica is the only place ragweed doesn't grow.

Sat Oct 06 10:00:00 EDT 2012

What do you enjoy most about working in the health care industry? Why? Leave a comment and let us know.

From The Heart
Sat Sep 22 12:00:00 EDT 2012

"It is not how much you do but how much love you put in the doing." -Mother Theresa

A Privilege
Sat Sep 08 14:00:00 EDT 2012

Embrace your age: "Do not regret growing older. It is a privilege denied to many." ~Author Unknown

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Areas Served:
  • Adkins
  • Alamo Heights
  • Atascosa
  • Balcones Heights
  • Bandera
  • Bennington
  • Bergheim
  • Bigfoot
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  • Brooks City Base
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  • Members of the Drug Information Association
  • The Association of Clinical Research Professionals
  • American Academy of Allergy
  • Asthma and Immunology
  • American Academy of Pharmaceutical Physicians; Certified Principal Investigator; Board Certified in Internal Medicine & Pulmonary Medicine