Abnormal Health Check Results: Should You Get a Colonoscopy? - Gastroenterology and Hepatology

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Abnormal health check values


Hello Dr.
Chen, I recently completed a health check-up, and the results showed an abnormal OBEIA value of 19.3 (I took stomach medication a day or two before the test due to gastrointestinal discomfort).
The reference value is <12 ng/ml.
I checked, and it seems to represent the fecal occult blood test.
Should I undergo a colonoscopy?

mark, 30~39 year old female. Ask Date: 2015/09/18

Dr. Chen Qifeng reply Gastroenterology and Hepatology


Hello, a positive fecal occult blood test indicates the presence of bleeding somewhere along the colon to the rectum and anus, which may include bleeding from hemorrhoids.
After evaluation by a physician, a decision is made to proceed with further examination.
A colonoscopy is certainly one of the most comprehensive diagnostic tests.
Sincerely, Dr.
Chi-Feng Chen, Attending Physician, Department of Gastroenterology, Taoyuan General Hospital, Ministry of Health and Welfare.

Reply Date: 2015/09/18

More Info


Hello! Thank you for reaching out with your concerns regarding your recent health check results, specifically the abnormal fecal occult blood test (FOBT) indicating a value of 19.3 ng/ml, which is above the reference value of <12 ng/ml. This situation can understandably cause anxiety, and it's important to clarify what this means and what steps you should take next.

The fecal occult blood test is a screening tool used to detect hidden blood in the stool, which can be an indicator of various gastrointestinal issues, including polyps, inflammatory bowel disease, or even colorectal cancer. A positive result, such as yours, suggests that there may be bleeding somewhere in the gastrointestinal tract. However, it is crucial to note that a positive FOBT does not definitively indicate cancer or any specific disease; it merely signals that further investigation is warranted.

Given your elevated FOBT result, it is advisable to proceed with a colonoscopy. A colonoscopy is a procedure that allows a gastroenterologist to visually inspect the lining of the colon and rectum using a flexible tube with a camera. This procedure can help identify the source of bleeding, whether it be from polyps, inflammation, or other abnormalities. Additionally, if any suspicious areas are found during the colonoscopy, biopsies can be taken for further pathological examination.

You mentioned that you had been experiencing gastrointestinal discomfort prior to the test and had taken medication for your stomach. It's worth noting that certain medications, dietary factors, and even recent gastrointestinal issues can sometimes lead to false-positive results in FOBT. However, given your elevated reading, it is still prudent to follow up with a colonoscopy to rule out any serious conditions.

In terms of symptoms, you did not report any significant gastrointestinal issues such as abdominal pain, changes in bowel habits, or weight loss, which are often associated with more serious conditions. However, the absence of symptoms does not negate the need for further investigation, as some conditions can be asymptomatic in their early stages.

In summary, based on your elevated FOBT result, I strongly recommend that you schedule a colonoscopy as soon as possible. This procedure is the best way to determine the cause of the bleeding and to ensure that any potential issues are addressed promptly. It is also a good opportunity to discuss any other concerns you may have with your gastroenterologist, including your recent gastrointestinal discomfort and any medications you have been taking.

Lastly, while it can be concerning to receive abnormal test results, remember that early detection and intervention are key to managing gastrointestinal health effectively. Please do not hesitate to reach out to your healthcare provider to discuss your results and the next steps in your care. Your health is important, and taking proactive measures is the best approach.

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