A gastroscopy uses a thin flexible tube with a light and camera attached to view the fist part of your upper digestive tract. This includes your oesophagus, stomach and the first part of your upper intestine. The instrument used is called an endoscope and the terms endoscopy and gastroscopy are often used interchangeably to refer to the same procedure. It can also be used to take a biopsy, where small samples of tissue are removed for testing.
