• Staff is awesome!

    I would recommend you to join a study.

    -Cynthia, Study Participant
  • The friendliness of the staff, they validate parking if you park in the parking garage, very professional!

    I do recommend this research group!

    -Rosie, Study Participant
  • Your staff, including the parking attendant, are extremely welcoming and make me forget I'm here for a Doctor's visit.

    -Yvonne, Study Participant
  • Staff was very courteous

    -Leticia, Study Participant
  • Outstanding service and very friendly staff

    -Joseph, Study Participant
  • Every employee here has been polite, friendly and very kind.

    Really Enjoyed meeting everyone here.

    -Alex, Study Participant
  • Thanks for the important work you are doing. 

    ALL of you are great.

    -Jolene, Study Participant
  • It is a pleasure working with such a dedicated research team 

    and I would definitely like to collaborate with your site on future trials. I sincerely appreciate all of the efforts made to date on our studies!

    -GSK Monitor
  • Very pleasant and friendly staff.

    They are very considerate to make every effort to make me comfortable.

    -Ralph, Study Participant
  • I am never anxious on visits; 

    very helpful staff.

    -Donald, Study Participant
  • The staff is extremely welcoming and supportive

    Everyone is aware of their responsibilities, knowledgeable of research and very cooperative. The entire organization is well run from the top down. This is my favorite site to work with!

    -Novum Monitor
  • Everyone is friendly and very informative.

    They explain all procedures and why. The staff is courteous and friendly and they listen. They ask often if you need anything, are friendly and smiling. A smile always goes a long way, even when you don’t feel like smiling.

    -Diane, Study Participant
  • Awesome!

    -GSK Monitor
  • Well executed, punctual. 

    Good job, keep up the good work.

    -Joel, Study Participant
  • Laura R, Dr. Holcomb and the rest of the staff are super professionals! 

    Happy to be part of this study; will recommend this clinic to others!

    -Lou, Study Participant
  • Study Coordinators were very responsive to my emails 

    and requests for study questions. Staff at the site is very friendly and accommodating. Patients' charts are very well organized and complete

    -Quintiles Monitor
  • Wonderful!

    Everyone is so friendly each time I have an appointment.

    -Gloria, Study Participant
  • Lisa Lopez and the entire staff are extremely professional, courteous, welcoming, etc. 

    I never felt I was in a doctor’s office; it felt like being at home.

    -Sara, Study Participant
  • The staff was friendly and knowledgeable. 

    Principal Investigator was available to meet and showed oversight in source. Data and regulatory binders were clean and well maintained.

    -Wyeth Monitor
  • The staff is upbeat, friendly and positive. 

    Very willing to make the testing sessions as comfortable as if one is at home. The staff treats me with care, compassion and understanding.

    -Mary Ann, Study Participant
  • This site does quality work 

    and pays attention to detail. Data corrections are usually handled quickly. All staff seem organized and are conscientious about their work.

    -Sanofi Monitor
  • Educational, pleasant, concerned with my health, 

    as well as the study performance. A combination of professional and a concerned family.

    -Michael, Study Participant

Business Partners

Thank you for your interest in Diagnostics Research Group. We are an integrated group of clinical research professionals based in the South Texas Medical Center in San Antonio, Texas.

Director of Clinical Research

Get to know Dr. Charles P. Andrews

Expertise

Learn about our clinical research and therapeutic expertise in the following areas:
 
  • Respiratory Disorders
  • Internal Medicine
  • Vaccines
  • Devices
  • Allergic Disorders

Research Capabilities

Our experience and expertise in different equipment and systems makes our site more versatile to meet the needs of many pharmaceutical trials.

Delivering Results

For the past 19 years, Diagnostics Research Group has been a leader in the field of clinical research in San Antonio, Texas. Our track record and professional affiliations reflect our investigators and staff members' experience, an earned asset in the Clinical Research industry. 

Participant Recruitment

Our Participant Recruitment Department utilizes full-time recruiters.

Staff & Certifications

Diagnostics Research Group's research staff consists of a cross section of highly skilled health care professionals.
 
Our clinical staff includes board certified Pulmonary, Critical Care, and Internal Medicine Physicians in addition to Registered Nurses and certified Medical Assistants.

All clinical staff members are equiped to conduct research studies, pulmonary function testing, allergy testing, and advanced cardiac life support. Completion of off-site training courses in the conduct and management of clinical trials is a requirement for DXRG staff members. 

We are pleased to have five (5) coordinators designated by the Association of Certified Research Professionals (ACRP) as Certified Clinical Research Coordinators (CCRC).

Dr. Andrews, our Director of Clinical Research, and Dr. Holcomb are both Certified Principal Investigators (CPI).
 
Chief Executive Officer Brita Andrews, RN, MSN, CCRC, has led Diagnostics Research Group since its inception and is a Certified Clinical Research Coordinator herself.

Our center specializes in clinical trials for:
  • Abdominal Pain
  • Allergy Medications
  • Allergic Rhinitis
  • Antibiotics
  • Antihistamines
  • Antihypertensives
  • Asthma
  • BCP’s
  • Bronchitis
  • Bronchodilators
  • Constipation
  • COPD
  • Diabetes
  • Diagnosis of Carcinoma
  • Dyslipidemia
  • Dyspepsia
  • HRT
  • Hypercholesterolemia
  • Hyperlipidemia
  • Hypertension
  • Inhaled and Nasal Corticosteroids
  • Insomnia
  • Intravenous sedation
  • Irritable bowel syndrome
  • Metabolic Syndrome
  • Obesity
  • Osteoarthritis
  • Osteoporosis
  • Pollen chamber experience
  • Pulmonary Fibrosis
  • Respiratory Medications
  • Sleep Medications
  • Smoking Cessation
  • Sputum/Cytology
  • Stress Urinary Incontinence Medications
  • Vaccines