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Diagnostic and Therapeutic Procedures and Services

The Gastroenterology Division provides specialized diagnostic and therapeutic procedures and services to diagnose and treat patients with a wide variety of disorders. These services are all provided through the Medical Procedures Unit, which is located in University Hospital.

Gastrointestinal Endoscopy


Medical Director: Grace Elta, MD

Gastrointestinal Physiology and Manometry Laboratory

Located in the University Hospital Medical Procedures Unit, the Gastrointestinal Physiology and Manometry Laboratory provides the following specialized services:

Director: William Chey, MD


Adult and Pediatric Ambulatory pH Testing

Esophageal Manometry (Esophageal MANO)


Anorectal Manometry (ARM)


Pudendal Nerve Terminal Latency Testing


SmartPill gastric motility test


Hydrogen Breath Test

Capsule Endoscopy


Colonic Transit Test


Gastric Acid Secretion Test


13C Urea Breath Test


Secretin Stimulation Test


Electrogastrogram (EGG)





University Hospital
2nd Floor,
Medical Procedures Unit
Ann Arbor, MI 48109