How Long Does an Endoscopy Take?

Quick Answer

The actual endoscopy procedure usually takes 15 to 30 minutes. However, you should budget 2 to 3 hours for your entire visit once you factor in registration, IV placement, sedation, the procedure itself, and monitored recovery. A diagnostic upper endoscopy (EGD) is typically the fastest, while procedures involving biopsies, dilation, or therapy take longer.

Time by Endoscopy Type

Procedure	Scope Time	Total Facility Time
Upper endoscopy (EGD)	15–30 min	2–3 hours
Colonoscopy	30–60 min	2–3 hours
Sigmoidoscopy	10–20 min	1–2 hours
Bronchoscopy	20–40 min	2–4 hours
ERCP (bile/pancreatic ducts)	30–90 min	3–4 hours
Capsule endoscopy	8–12 hours (passive)	Return next day

What Happens During Your Visit

1. Check-in and prep (30–45 min): You review consent forms, change into a gown, and a nurse places an IV line.
2. Sedation (5–10 min): Most patients receive conscious sedation or propofol so they are relaxed or asleep.
3. The procedure (15–30 min): The doctor guides a thin, flexible tube with a camera through your mouth (or the relevant tract) to examine and, if needed, take biopsies.
4. Recovery (30–60 min): You rest in a recovery area while the sedation wears off and staff monitor your vitals.
5. Discharge: A responsible adult drives you home, since sedation impairs coordination for the rest of the day.

Factors That Affect How Long It Takes

• Biopsies or polyp removal: Taking tissue samples or removing growths adds 5–20 minutes.
• Sedation type: Deeper sedation (propofol) means longer monitored recovery.
• Findings: If the doctor finds bleeding, strictures, or lesions requiring treatment, the scope time extends.
• Anatomy and prep quality: A poorly prepped colon or difficult anatomy lengthens the exam.
• Facility volume: Busy centers may add wait time before and after.

How to Make the Day Go Smoothly

• Follow prep instructions exactly — fasting for 6–8 hours (or a full bowel prep for colonoscopy) prevents delays or rescheduling.
• Arrange a ride in advance; you cannot legally drive after sedation.
• Wear loose, comfortable clothing and leave valuables at home.
• Clear your afternoon — most people feel groggy and should rest, not return to work.
• Ask about results timing — the doctor often shares visual findings the same day, but biopsy results take 3–7 days.

When to Call Your Doctor

Mild bloating, a sore throat, or gas is normal for a day. Seek prompt medical care if you experience:

• Severe or worsening abdominal or chest pain
• Vomiting blood or passing black, tarry stools
• Fever or chills
• Difficulty breathing or swallowing
• Persistent dizziness beyond the expected sedation recovery

These can signal rare complications such as bleeding or a perforation and should be evaluated right away.