After gastroscope black stool wants a few days just good

After gastroscopy, black stool usually takes 3-7 days to recover. It needs to be explained according to the situation. The details are as follows:

If the doctor takes biopsy or pathological examination during gastroscopy, it may cause certain damage to the gastric mucosa, resulting in local mild bleeding. Blood is oxidized in the intestinal tract to form black stool. With the recovery of metabolism, it usually takes 3-7 days to recover. Usually, there is no need to worry too much. However, if you feel stomach pain for a long time, accompanied by black stool for more than 7 days, it is usually abnormal, and you need to go to the hospital for systematic examination and treatment.