Minimally Invasive
1-Hour Test
for Monitoring EoE Disease State

Preferred by Healthcare Professionals
Healthcare professionals favor our sampling method due to its direct access to early disease markers, superior performance, ease of administration devoid of risks or adverse effects, and its cost-effectiveness in delivering reliable health insights.
“Logistically in my office, if I saw a patient—even if it was their first visit—I can literally set it up within five minutes and do the test.”
– Dr. Ray Firstz
Webinar with Dr. Firstz
Allergist at Tanner Clinic in Murray, UT
“By offering an alternative tool that eliminates the need for sedation and reduces time away from school or work, patient families have a more accessible option for esophageal testing, and providers still collect necessary data for patient care.”
– Dr. Benjamin Wright, pediatric allergist and immunologist at Phoenix Children’s and study co-author

“We knew there had to be options to save our patients from having to go under anesthesia in order to obtain results that would tell us much-needed information about their conditions.”
– Glenn T. Furuta, MD, pediatric gastroenterologist
Why the EnteroTracker®?

Why EnteroTracker®?
- Continuous Monitoring: Effortlessly track esophageal inflammation in EoE without repetitive invasive procedures, gaining precise insights into disease progression and treatment responses.
- Financial Relief: Substantially reduce healthcare expenses for both patients and the healthcare system. Ensure wider accessibility, especially in areas lacking affordable endoscopy facilities.
- Groundbreaking Innovation: Supported by two decades of rigorous research, EnteroTracker® reshapes the healthcare landscape by providing accurate, minimally invasive, and cost-effective solutions.
Empowering Healthcare Professionals and Patients
EnteroTracker® empowers healthcare professionals and patients with effective tools to navigate their health journeys. Our steadfast dedication to scientific excellence and patient welfare propels our innovations.

Latest Publications
EnteroTracker®: Precision and Comfort Combined
Our samples exhibit remarkable correlation with biopsy results, capturing equivalent content and crucial biomarkers for comprehensive analysis.

Webinar: Shauna Schroeder, MD, MS on EoE Monitoring & Unsedated Endoscopy
During this webinar, Shauna Schroeder, MD, MS, presented information about unsedated endoscopy and monitoring options for eosinophilic disorders, including the esophageal string test. Dr. Schroeder discussed the different types of diagnostic tools that are available, how they work, and when they are used, with a focus on the esophageal string test.
Learn MorePodcast: Esophageal String Test — Monitoring Tool Use and Development
A patient advocate living with eosinophilic esophagitis (EoE) and a feeding specialist living with EoE who serves on APFED’s Health Sciences Advisory Council talk with our lead developers, Drs. Robin Shandas and Steven Ackerman.


EnteroTracker®: Where Precision Meets Comfort
Health professionals prefer this sampling method as it:
- Offers direct sampling from the upper gut for analysis of early disease markers
- Samples GI luminal and mucosal fluid at the point of disease, which is superior to other sample types (blood, urine, stool, saliva)
- Helps provide more granular information on disease progression
- Improves monitoring as it is easy to administer
- Provides a cost-effective solution for reliable health insights
EnteroTracker® samples are well correlated to biopsy results:
- The levels of eosinophil-derived granule proteins (MBP1, EoTax3) from the EnteroTracker® show excellent correlation to the gold standard of number of eosinophils per high field obtained using the gold standard: endoscopic biopsy.
- EnteroTracker® samples show equivalent microbiome content to that found by endoscopic biopsy.
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