Understanding Your Medical Test: What It Is, Why It's Done, and What Your Results Mean
This test records whether adenomas (precancerous polyps) were found during a colonoscopy or sigmoidoscopy examination of the colon.
{"Adenomas are precancerous growths that can develop into colorectal cancer if left untreated","Finding and removing adenomas during colonoscopy prevents colorectal cancer","The presence of adenomas determines your future screening schedule","Regular colonoscopy screening is recommended for adults over 45-50 years old","No adenomas found means lower risk for colorectal cancer"}
Key facts at a glance
- LOINC
- 67172-7
- Short code
- ADENCOL
- Synonyms
- Adenomas colonoscopy PhenX
- Category
- chemistry
- Sample
- serum
- Container
- N/A - This is a procedural finding, not a blood collection
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 40 years
- Method
- phenx
- CPT
- 45378-45398 (colonoscopy codes vary by complexity and findings)
- SNOMED
- 265764009
- Specimen volume
- N/A - Visual endoscopic examination
- Stability
- N/A - In situ visual examination
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
This is a diagnostic test that helps your healthcare provider evaluate how your body is functioning. It may measure substances in your blood, urine, or another type of sample, and the findings give your care team important clues about your overall health and any conditions that may need further attention.
This test records whether adenomas were found during a colonoscopy or sigmoidoscopy procedure. A colonoscopy examines the entire colon using a flexible camera tube, while a sigmoidoscopy examines only the lower part. Adenomas, also known as adenomatous polyps, are abnormal growths that can potentially become cancerous over time. This test result indicates whether any such precancerous growths were detected and removed during the procedure.
Your provider may order this test to confirm or rule out a suspected condition, monitor an illness you already have, check how well a current treatment is working, or screen for problems before symptoms appear. The results play a key role in guiding decisions about your diagnosis, treatment plan, and follow-up care.
This examination is performed primarily for colorectal cancer screening and prevention. It helps detect precancerous adenomas before they develop into cancer. If adenomas are found and removed during the procedure, cancer can be prevented. The findings also help determine how often you need future colonoscopies - people with adenomas typically need more frequent follow-up exams.
During the procedure, a trained member of your care team will collect the needed sample, which may involve drawing a small amount of blood from a vein in your arm or asking you to provide a urine specimen. The process is usually quick and only mildly uncomfortable, and you can typically return to your normal activities right afterward.
Before the procedure, you will need to clean your colon by following a special diet and taking laxatives. During the colonoscopy, you will be sedated while the doctor inserts a flexible tube with a camera through the rectum to examine the entire colon. If any polyps or abnormal growths are found, they are typically removed immediately and sent to a laboratory for analysis. The procedure usually takes 30-60 minutes.
Your results will show whether your values fall within the normal reference range established for this test. Results that are higher or lower than expected do not always mean something is seriously wrong, so your provider will review them with you, explain what they mean in your situation, and discuss any next steps or additional testing that may be helpful.
If adenomas are found, your doctor will classify them based on their type, size, and number. This information helps determine your risk for colorectal cancer and guides recommendations for follow-up examinations. Finding adenomas is actually a positive outcome because it means potential cancer has been prevented through their removal.
Reference range
No adenomas detected - normal finding. Presence of adenomas requires follow-up per colonoscopy surveillance guidelinesN/A
Bowel preparation required as per colonoscopy/sigmoidoscopy protocol. Patients should follow specific diet and laxative instructions provided by endoscopy center. Inform physician of medications that may affect bleeding
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
The detection of adenomas during colonoscopy is clinically significant because adenomas are the precursors to most colorectal cancers. Finding and removing adenomas reduces the risk of colorectal cancer by 70-90%. The number, size, and histology of adenomas found determine the interval for subsequent surveillance colonoscopies - patients with adenomas may need repeat exams in 3-5 years, while those without adenomas may wait 10 years.
This test result also helps identify patients who may have genetic conditions like Lynch syndrome if multiple or large adenomas are found at a young age. Such patients may benefit from genetic counseling and extended family screening.
Frequently asked questions
Does finding adenomas mean I have cancer?
How often should I have a colonoscopy?
Is the colonoscopy procedure painful?
What are the risks of removing adenomas?
Who should get a colonoscopy?
Sources
- 1
- 2
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy