Breath Testing. Breath test is used to diagnose conditions such as fructose, lactose intolerance and SIBO. These disorders create a chemical response that can be measured in your breath.
Upper Endoscopy. Upper endoscopy allows gastroenterologists to diagnose upper abdominal pain, nausea, vomiting, difficulty swallowing. Best test to find cause of upper gastrointestinal tract bleeding. Upper endoscopy is more accurate than X-rays.
Colonoscopy. Colonoscopy is a medical outpatient procedure. It allows the gastroenterologist to examine a large intestine. Colonoscopy to test for colon cancer, pre-cancerous polyps (removed at the same time by the NYC gastroenterologist).