Can you eat before doing gastroscopy?

Gastroscopy is to observe the color of the mucosa of the gastrointestinal tract and whether there is erosion, ulcer or tumor through endoscopy. The examination equipment needs to enter the stomach of the body. If the patient eats before the examination, it is easy to affect the clarity of the gastroscopy lens. And the acid secretion caused by eating food can lead to changes in the color of the gastrointestinal mucosa, which is easy to cause errors in the examination results

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