What to Expect During Your First Colonoscopy

If your doctor just told you it's time for your first colonoscopy, you’re probably feeling a little anxious about it. While most people who have never had one imagine the worst, getting a colonoscopy is actually a routine outpatient screening procedure that is a whole lot faster and easier than most people expect. The colonoscopy prep gets the most complaints, but even that has improved a lot in recent years.

Putting off getting a colonoscopy when your doctor recommends it, or if you fit the criteria for having one, raises your risk of getting colon cancer, which ranks as the second leading cause of cancer-related deaths in the United States. In fact, colon cancer is projected to claim around 55,230 lives in 2026 alone. Those numbers are sobering, but they also underscore exactly why routine colon cancer screening exists.

Read on to learn everything you need to know before getting your first colonoscopy, including how to prepare for your first colonoscopy, what to expect during and after the procedure, and where to find the best colorectal surgeon in Los Angeles for a colonoscopy. 

Why Getting a Colonoscopy is so Important

A colonoscopy is a procedure where a doctor uses a long, flexible tube with a small camera on the end to look at the inside of your colon and rectum for colon polyps, precancerous growths, and signs of colorectal cancer. It's considered the best tool available for diagnosing colorectal cancer, and it can even prevent cancer by removing small growths called polyps before they become a problem. When polyps are found and removed during the procedure, they never get the chance to turn into cancer. That’s why following the recommended colon cancer screening intervals can truly save your life.

When to Schedule Your First Colonoscopy

The American Cancer Society recommends that most adults start colonoscopy screening at age 45. If you have a close family member who had colon cancer or polyps, your doctor may suggest starting at age 40 or even earlier, depending on your family history.

How to Prepare for a Colonoscopy 

The colonoscopy prep phase is what people talk about the most, and yes, it requires some planning. Every colorectal surgeon has a slightly different colonoscopy prep, but the basics are usually the same:

• A few days before your procedure, you'll switch to low-fiber foods.
• The day before, you'll move to clear liquids only. This includes fluids like apple juice, broth, water, and plain Jell-O. You’ll also need to avoid drinks that are red or purple in color. These dyes can look like blood during the exam and create unnecessary confusion. Stick with clear or light-colored liquids only. And drink plenty of water to avoid dehydration. 
• You’ll also begin drinking your bowel prep liquid the day before your surgery
• A few hours before the procedure, you'll stop all liquids entirely.

What to Know About Bowel Prep Before a Colonoscopy

24 hours before your procedure, you'll also drink a bowel-clearing solution to clean out your colon. Today's options are much better than they used to be, and many patients now use a split-dose method. This involves drinking half the solution the night before and the other half the morning of the procedure. This approach is easier on your stomach and tends to produce better results. Chilling the solution first and drinking it through a straw can also help.

What to Expect During a Colonoscopy Procedure

The colonoscopy itself takes about 30 minutes. However, with check-in, pre-operative preparation, and recovery time, you should plan to be at the outpatient surgical clinic for around two to three hours total. The typical experience includes: 

• When you arrive, you'll change into a gown, have an IV placed, and meet with your care team before being taken to the procedure room.
• You’ll receive IV sedation, similar to anesthesia, that prevents you from feeling or remembering anything. Depending on the level of sedation you and your doctor decide on, you may sleep the entire time. 
• During the exam, the doctor guides the flexible tube through your colon and uses small puffs of air or gas to gently open the area for a clear view. If a polyp is spotted, a small wire tool called a snare is used to remove it. The tissue is then sent to a lab to check for any signs of colon cancer. 

You cannot drive yourself home since the sedation affects your judgment and reflexes for several hours, even if you feel fine. You'll need a trusted adult to bring you home and stay with you until the next day. Plan this ahead of time so there's no scrambling on the day of your appointment.

Recovery After a Colonoscopy

After the procedure, you'll spend about an hour in a recovery area while the sedation wears off. The nurses will check on you, offer you something to drink, and make sure you're feeling okay before you leave. Most patients feel well enough to eat a normal meal within a couple of hours.

For the rest of the day, it’s a good idea to stick with soft, easy-to-digest foods. Scrambled eggs, bland soups, toast, or bananas are good choices. The prep process can leave you mildly dehydrated, so drink more water than usual. Hold off on alcohol, caffeine, and carbonated drinks for at least 24 hours.

Understanding Your Colonoscopy Results 

If everything looked normal and no polyps were removed, you may get your results before you even leave. If tissue was removed and sent to the lab, results typically take up to a week to get back.

A clean colonoscopy with no findings means you likely won't need another one for five to 10 years. If polyps were found, or if you have risk factors like inflammatory bowel disease or a strong family history of colorectal cancer, your doctor will recommend a follow-up sooner.

Where to Find the Best Colorectal Surgeon in Los Angeles for a Colonoscopy 

A colonoscopy is one of the most useful health screenings available. And in many cases, it stops cancer before it ever starts. The procedure is short, the recovery is easy, and the prep, while not exactly enjoyable, is very doable with a bit of planning.

If you've been putting this off, our office makes it easy to take the next step. Dr. Karen Zaghiyan is a board-certified colorectal surgeon with specialized training in minimally invasive procedures and a focus on making patients feel genuinely comfortable. She brings both surgical precision and real patience to every consultation, which means you can ask every question you have and leave feeling clear on what comes next.

We see patients who are anxious about their first colonoscopy all the time. Most of them walk out saying it was nothing like what they imagined. We'd like you to have that same experience. Colorectal cancer is highly treatable when caught early, and a single screening appointment is all it takes. 

Ready to schedule your colonoscopy with the best colorectal surgeon in Los Angeles?