We diagnose. You treat.
GI Diagnostics was built to extend the diagnostic capacity of your practice, not compete with it. When a patient's workup calls for a depth of motility or functional testing that your schedule or the hospital's can't easily accommodate, we handle that piece and hand the patient, and a complete report, back to you.
Every referral is handled personally by our clinical team, and every report is formatted for immediate specialist review. Your team is always welcome to speak directly with ours.
The same tools used in academic gastroenterology, in a dedicated testing setting.
Testing at GI Diagnostics is selected, overseen, and interpreted under the clinical standards of Dr. Michael Nathanson, MD, PhD, former Chief of Digestive Diseases at Yale and Director of the NIH-funded Yale Liver Center.
Hydrogen & methane lactulose breath test · Fructose and lactose malabsorption panels · SIBO quantification · Rome IV criteria
Whole-gut transit study · Regional mapping: gastric emptying, small bowel transit, colonic transit
Esophageal manometry, Chicago Classification v4.0 · Anorectal manometry for dyssynergic defecation and evacuation disorders
Substrate-specific breath challenge for lactose, fructose, and sucrose · Enzymatic threshold mapping
A report built for specialist review.
Every patient receives a structured diagnostic report compiled to the same data standards required by peer-reviewed clinical research. It's formatted to be immediately legible to any specialist, and designed to support, not replace, your ongoing relationship with the patient.
Insurance billing is standard for referred patients.
When you submit a referral with the relevant clinical documentation, our team handles preauthorization and billing on your patient's behalf. You don't need to manage that process. We work with a dedicated billing team experienced in GI diagnostic testing and coordinate directly with the payer.
Send us a referral.
Complete the form below and a member of our clinical team will be in touch within one business day to coordinate next steps. You may also call us directly at (561) 961-0208 or email questions@gi-diagnostics.com.