After the endoscopy biopsy test is taken which takes around 30 minutes from start to finish then the sample of the endoscopy biopsy is sent off to a lab.
It can then take the lab around 3 days to have the results of the endoscopy biopsy sent back to the doctor.
So you should hear back from the doctor within 3 days about the results of the endoscopy biopsy test.
Sometimes it could take up to 7 or even 10 days for the endoscopy biopsy results but in most cases it's within 3 to 4 days that you get the results back.