---
title: "Colonoscopy & Colorectal Cancer Screening | Sutter Health"
description: "Find colonoscopy care near you at one of Sutter’s 55+ locations, offering advanced screening technology and personalized care."
url: "https://www.sutterhealth.org/services/colonoscopy"
---

1.  [Home](https://www.sutterhealth.org/) /
2.  [Services](https://www.sutterhealth.org/services) /
3.  Colonoscopy

![Two older adults jog together along a sunny, tree-lined path, the woman smiling at the man beside her, staying active after a colon cancer screening.](https://edge.sitecorecloud.io/sutterhealt962c-sutterhealt8fce-production57cc-4860/media/Project/SutterHealth/SutterHealth/Images/Hero-Images/colonoscopy-2.jpg?h=2100&iar=0&w=3150)

# Colonoscopy

A colonoscopy is a routine procedure and screening where a doctor examines the inside of the colon and rectum for signs of colon cancer, polyps and more.

[Find a gastroenterologist](https://www.sutterhealth.org/find-provider-results?facets=%5B%7B%22i%22%3A%22c_providerSpecialties.specialty.name%22%2C%22v%22%3A%5B%22Gastroenterology%22%5D%7D%5D&verticalKey=healthcare_professionals)

[Request a Referral](https://www.sutterhealth.org/referrals)

![Two older adults jog together along a sunny, tree-lined path, the woman smiling at the man beside her, staying active after a colon cancer screening.](https://edge.sitecorecloud.io/sutterhealt962c-sutterhealt8fce-production57cc-4860/media/Project/SutterHealth/SutterHealth/Images/Hero-Images/colonoscopy-2.jpg?h=2100&iar=0&w=3150)

Why choose Sutter?

A colonoscopy is a safe, routine procedure that can reduce your risk of colon cancer by 60-90%. It also lets your doctor evaluate conditions like bleeding, chronic diarrhea and anemia. At Sutter, our providers work together to prioritize your needs for the most thorough, comfortable screening possible. [During the procedure](https://www.sutterhealth.org/health/your-questions-about-colonoscopy-answered), your doctor will use an endoscope, a flexible tube with a video camera, to examine the inside of your large intestine and rectum. This allows your doctor to detect and remove precancerous and cancerous polyps, close wounds, inject medications and place stents.

## By the numbers

### 200+

gastroenterologists

provide personalized patient care using advanced diagnostics and treatments.

### 55

locations

perform endoscopies so you’ll find appointments near you.

### 55+

locations

offering endoscopy services for convenient screening access.

### 90%

5-year survival rate

for people whose colorectal cancer is found and treated early.

## Need a referral?

Chat live with our team Monday through Friday, 8:00 am — 5:00 pm, or call us at [888-834-1788](tel:+18888341788).

[Request a referral](https://www.sutterhealth.org/referrals)

## Conditions

-   Anemia
-   Bleeding
-   Chronic diarrhea
-   [Colon and rectal cancer](https://www.sutterhealth.org/services/colorectal-cancer)
-   Colon polyps
-   Gastrointestinal stromal tumor (GIST)
-   Gastrojejunal ulcer
-   Irritable bowel syndrome (IBS)

## What to expect during a colonoscopy

Find out what to expect from a colonoscopy straight from one of our doctors. This important screening test is very effective at detecting colon cancer early, when it’s most treatable.

Are you near or over 45 and dreading “the test”? Our specialist explains how research shows that getting a colonoscopy can reduce your risk of colon cancer by 60–90%.

Discover if a colonoscopy or at-home screening test is right for you.

1 / 3

1 / 3

Find out what to expect from a colonoscopy straight from one of our doctors. This important screening test is very effective at detecting colon cancer early, when it’s most treatable.

Are you near or over 45 and dreading “the test”? Our specialist explains how research shows that getting a colonoscopy can reduce your risk of colon cancer by 60–90%.

Discover if a colonoscopy or at-home screening test is right for you.

## Awards and accreditations

[View all Awards and accreditations](https://www.sutterhealth.org/about-us/awards?verticalKey=awards&facets=%5B%7B%22i%22%3A%22c_awardServices.name%22%2C%22v%22%3A%5B%22Colonoscopy%22%5D%7D%5D)

U.S. News & World Report

2026

Best Ambulatory Surgery Centers (High-Performing Colonoscopy & Endoscopy)

U.S. News & World Report

2025

Best Ambulatory Surgery Center for Colonoscopy & Endoscopy

U.S. News & World Report

2024

Best Ambulatory Surgery Center for Colonoscopy & Endoscopy

Newsweek

2025

America’s Best Cancer Hospitals

[View all Awards and accreditations](https://www.sutterhealth.org/about-us/awards?verticalKey=awards&facets=%5B%7B%22i%22%3A%22c_awardServices.name%22%2C%22v%22%3A%5B%22Colonoscopy%22%5D%7D%5D)

![doctor-show-large-intestine-model](https://edge.sitecorecloud.io/sutterhealt962c-sutterhealt8fce-production57cc-4860/media/Project/SutterHealth/SutterHealth/Images/medical-doctors/doctor-show-large-intestine-model.jpg?h=429&iar=0&w=814)

## Learn how to prep for your colonoscopy

Diet changes, medication adjustments and arranging a ride home are key steps before your procedure. This guide covers what to expect before, during and after your colonoscopy.

[Read the prep guide](https://www.sutterhealth.org/health/how-to-prepare-for-a-colonoscopy)

![doctor-show-large-intestine-model](https://edge.sitecorecloud.io/sutterhealt962c-sutterhealt8fce-production57cc-4860/media/Project/SutterHealth/SutterHealth/Images/medical-doctors/doctor-show-large-intestine-model.jpg?h=429&iar=0&w=814)

![doctor-explain-colon-model](https://edge.sitecorecloud.io/sutterhealt962c-sutterhealt8fce-production57cc-4860/media/Project/SutterHealth/SutterHealth/Images/medical-doctors/doctor-explain-colon-model.jpg?h=429&iar=0&w=814)

## Discover new treatment options

Our clinical trials explore emerging therapies and screening methods for colorectal cancer. Browse open studies to learn what's currently available and how to find out if you qualify.

[Browse clinical trials](https://www.sutterhealth.org/research-search-results?facets=%5B%7B%22i%22%3A%22c_researchTopics.name%22%2C%22v%22%3A%5B%22Colorectal+Cancer%22%5D%7D%5D&verticalKey=clinical_trial)

## Sutter spotlight

Health & wellness

### [Colonoscopy Myths: What’s the Truth?](https://www.sutterhealth.org/health/colonoscopy-myths-debunked)

Having a colonoscopy is easier and more important than many people think.

Health & wellness

### [Reduce Your Colon Cancer Risk](https://www.sutterhealth.org/health/reduce-your-colon-cancer-risk)

Take steps throughout your lifetime to avoid colon cancer.

Page

### [Get screened for cancer](https://www.sutterhealth.org/health/get-screened-for-cancer)

Screenings save lives. Learn when you should get screened for the most common cancers.

## Frequently asked questions

**What is a colonoscopy?**

A colonoscopy is a routine and commonly performed procedure that lets a doctor check the inside of your colon and rectum. During colonoscopies, a gastroenterologist inserts a flexible tube with a camera on the end, called a colonoscope, into your rectum so they can inspect your large intestines. The scope is about the width of your finger, and the procedure is typically painless. Most colonoscopies take about 20-30 minutes.

**Why are colonoscopies recommended?**

The most common reason to have a colonoscopy is to screen for colorectal cancer, which is the [third leading cause of cancer deaths](https://www.cancer.org/cancer/types/colon-rectal-cancer/about/key-statistics.html#:~:text=In%20the%20United%20States%2C%20colorectal,about%2052%2C550%20deaths%20during%202023.) in the United States. This screening helps detect diseases like inflammatory bowel disease and can reduce your risk of colon cancer by 60-90%. Colonoscopies are a safe, effective way to detect and prevent colon cancer. Colonoscopies can also be useful for the evaluation of conditions, such as bleeding, chronic diarrhea and anemia (low blood counts).

**Who should get a colonoscopy?**

Current guidelines advise you should have your first colonoscopy at age 45, then screen every 10 years. You may need a colonoscopy earlier or require more frequent screenings if you have:

-   Advanced polyps before age 60
-   A relative who has had colon cancer
-   An inflammatory bowel disease such as Crohn’s disease, Lynch disease or ulcerative colitis

**What is a polyp?**

Polyps are abnormal growths that form on the colon lining. While many polyps are harmless, some are considered precancerous, meaning they could turn into cancer.

Almost all colorectal cancers start as small polyps. During a colonoscopy, doctors can detect and remove these polyps, which is why colonoscopy is an effective way to prevent colorectal cancer. The removal of polyps (polypectomy) is a painless procedure.

**What are the risks and complications of colonoscopy?**

Most risks linked to a colonoscopy are minor and uncommon. The most serious complication is a perforation, or a tear of the wall of the colon. In some cases, this can require emergency surgery. Bleeding is another possible complication that can occur when a polyp is removed, but this typically stops on its own.

**How is a colonoscopy scheduled?**

Your primary care doctor’s office will let you know if you’re due for a colonoscopy. Your doctor will then refer you to a gastroenterologist, who will contact you to schedule the procedure. You can also reach out to your doctor if you have questions or want to schedule an appointment.

**Do I have to drink all the prep?**

Yes, you need to drink all the prep. The most effective way to cleanse your colon is to take the entire bowel preparation solution in two separate doses. This helps make sure your colon is clean and reduces the chances you’ll have to reschedule your procedure.

To improve the taste of your preparation medication, try these tips:

-   Add a citrus-flavored powdered drink packet
-   Chill the prep before drinking
-   Lick a lemon or lime wedge after sips
-   Use a straw

**Are there different instructions or prep if I have diabetes or other chronic illnesses?**

Yes. If you’re diabetic or take medications related to diabetes or weight loss, like Mounjaro (tirzepatide) or Ozempic (semaglutide), talk to your doctor about your colonoscopy prep and instructions.

**Can I have other fluids that are not clear?**

The general rule: If you can see through it, you can have it. You need to stay well hydrated while drinking the prep, so please drink as much of the clear liquid diet detailed in your prep instructions. Just make sure what you’re drinking isn’t red, purple or blue.

**What should I do for anal discomfort?**

Applying petroleum jelly or diaper rash ointment before starting the prep and after each bowel movement can lessen irritation from bowel movements. You can use nonalcoholic baby wipes or nonalcoholic wet wipes for cleansing.

**Should I still take my regular medications?**

Please take all medications as prescribed unless your doctor or gastroenterologist tells you otherwise. Talk to your doctor if you take medication for diabetes or weight loss.

**Can I drive myself to and from my colonoscopy?**

Because you’ll be under light sedation during your procedure, you’ll need to arrange for someone over age 18 to bring you to your procedure, drive you home and be with you after.

**How is a colonoscopy performed?**

Most colonoscopies last 20 to 30 minutes, followed by another 30 minutes in the recovery area. Several steps you can expect include: 

-   Before the colonoscopy, you’ll meet with a nurse to review any questions and a gastroenterologist to review the procedure. 
-   Your vital signs (blood pressure, heart rate and oxygen saturation) will be monitored closely before, during and after the procedure.
-   You’ll receive a sedative and pain medication through an intravenous line placed by a nurse.
-   Typically, you’ll lie on your left side during the procedure, although in some cases you may be repositioned. 
-   During the colonoscopy, your doctor will carefully inspect your colon and may remove polyps (polypectomy) or take biopsies (the painless removal of a small tissue sample).

**What can I expect after a colonoscopy?**

You’ll be closely monitored in the recovery area as the sedatives wear off. Because sedatives may impair your judgment and coordination, you must have someone drive you home and stay with you for a short time after the procedure.

After your procedure, a nurse will call to see how you’re doing and if you have any questions. You’ll receive your test results by phone or can view them in your My Health Online account. 

Generally, there are no restrictions on what you can eat after a colonoscopy. Your doctor will give you specific instructions on whether you should take or avoid certain medications, depending on the findings of your colonoscopy. If your doctor took biopsies or removed polyps, you’ll be contacted later with those results. If you screen positive for colon cancer, your doctor will discuss the next steps to treat and remove the cancer.

**Why do I need a ride home and someone to stay with me after the procedure?**

Even light sedation can temporarily impair your judgment and coordination. To stay safe, please take it easy for the rest of the day. Some bloating, gas or mild cramping is normal and should go away gradually.

**When can I return to work and normal activity?**

You should be back to normal the day after your procedure.

**When can I travel again?**

There’s a small risk of bleeding for up to two weeks after a polyp is removed. Talk to your doctor before your colonoscopy if you plan to fly within a couple of weeks post-procedure. We discourage booking any international travel by plane within two weeks after your colonoscopy. If a large polyp is removed, your doctor may recommend canceling the flight.

## Connect with digestive health care near you

Our gastroenterologists are ready to see you, with personalized care and locations close to home.

[Find a gastroenterologist](https://www.sutterhealth.org/find-provider-results?facets=%7B%22c_providerSpecialties.specialty.name%22%3A%7B%2213%22%3A%7B%22value%22%3A%22Gastroenterology%22%2C%22matcher%22%3A%22%24eq%22%7D%7D%7D&verticalKey=healthcare_professionals)

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```

```json
{"@context":"https://schema.org","@type":"VideoObject","name":"Colorectal Cancer Screening: Colonoscopy vs. At-Home Test","thumbnailUrl":"https://cf-images.us-east-1.prod.boltdns.net/v1/static/817826402001/9faa2cb5-eb3d-4501-bb32-b9af44767304/e80e4c4c-857c-49b3-b03c-dba525863d32/1280x720/match/image.jpg","uploadDate":"2024-02-06T19:19:08.916Z","embedUrl":"https://players.brightcove.net/817826402001/79bcaa57-54d7-453c-9f1f-8ab3ef7b15de/index.html?videoId=6346362707112","description":"In a minute, discover which colorectal cancer screening – colonoscopy or the at-home test – is right for you. If you need more help deciding, talk to your doctor by scheduling an appointment at mho.sutterhealth.org or calling 844-987-6115.","duration":"PT1M12S","transcript":"Everyone nearing 45, odds are your doctor has brought up screening\nfor colorectal cancer.\nOne of the most common cancers for people under 50 in the United States.\nAnd there are two screening options to catch it early.\nThe first is colonoscopy, also known as the gold standard.\nWhy is that?\nWell, it's extremely accurate, it's needed once every ten years,\nand concerning polyps can be removed as it's being performed.\nBut there are some things people don't like about it,\nsuch as fasting the day before, while on a clear liquid diet.\nThe bowel prep medication, which may not have the best flavor\nand the obvious uncomfortable element.\nNow the second option, the at-home test.\nSmall disclaimer: you'll need to mail in your stool.\nWith that out of the way, let's jump into the positives.\nIt can be done at home,\nit takes less time and is easier to get for lower risk patients.\nBut there are some downsides.\nIt has lower accuracy\ndetecting precancerous polyps and needs to be done more frequently.\nThere are higher rates of false positives and a positive result\nrequires a follow up colonoscopy.\nWhen deciding between a colonoscopy or an at home\ntest, it's a good idea to schedule an appointment with your doctor.\nThey can guide you to the screening option that's best for you."}
```