A colonoscopy is a safe and routine procedure used to screen for colorectal cancer, remove polyps, and diagnose digestive symptoms. While complications are rare, some patients may experience bleeding after colonoscopy—especially if a polyp was removed or a biopsy was taken.
In most cases, mild bleeding is normal and temporary. However, it's important to understand what's expected, what's not, and when to seek medical attention.
Is Bleeding After Colonoscopy Normal?
Yes, minor bleeding can occur, particularly if:
- A polyp was removed
- A biopsy was performed
- There was slight irritation from the scope or instruments
This type of bleeding usually appears as a small amount of bright red blood on toilet paper or in the stool, and may last for 1–2 days.
When Should You Be Concerned?
While some bleeding is normal, you should contact your doctor immediately if you experience:
Heavy bleeding (more than a tablespoon)
Bleeding lasting more than 2–3 days
Blood clots or dark, tarry stools
Severe abdominal pain or cramping
Fever, dizziness, or fainting
These could be signs of a more serious issue such as a delayed bleeding from a polyp removal site or a rare complication like a perforation.
Causes of Bleeding After Colonoscopy
Here are some common reasons for post-procedure bleeding:
| Cause | Details |
|---|---|
| Polyp Removal | Polyps, especially large ones, may cause minor bleeding |
| Biopsy Site | Small tissue samples may bleed slightly |
| Hemorrhoids | Existing hemorrhoids may be irritated during the procedure |
| Medication Effects | Blood thinners or NSAIDs may increase bleeding risk |
Always let your doctor know before the procedure if you are on anticoagulants or have a bleeding disorder.
What Should You Do If You Notice Bleeding?
If bleeding is light and stops within a day or two, it's usually nothing to worry about. Follow these steps:
- Rest for the remainder of the day
- Stay hydrated and avoid strenuous activity
- Avoid NSAIDs like ibuprofen or aspirin unless approved by your doctor
- Monitor symptoms and keep track of bleeding patterns
But if symptoms worsen or persist, contact your gastroenterologist immediately.
Preventing Complications
To minimize the risk of bleeding after colonoscopy:
- Follow your doctor's prep instructions carefully
- Inform your doctor about medications and health conditions
- Avoid certain supplements (like fish oil, vitamin E) before the procedure if advised
- Give your body time to heal after polyp removal or biopsy
When to Call Colon Digestive
At Colon Digestive, our priority is your safety and peace of mind. If you're experiencing unusual bleeding after a colonoscopy, or have questions about your recovery, don't hesitate to reach out to our experienced team.
