Understanding Fecal Occult Blood Test (FIT) Results

Fecal Occult Blood Test (FIT) is a lab test used to detect hidden blood in stool samples. This test is important because it helps in screening for bowel cancer, potentially catching it early when treatment is more effective.

What is the Fecal Occult Blood Test (FIT)?

The Fecal Occult Blood Test (FIT) is a non-invasive test that checks for hidden (occult) blood in the stool. This blood is not visible to the naked eye and requires a special test to detect it. The presence of blood in the stool can be a sign of various conditions, including colorectal cancer or polyps, which are growths on the lining of the colon that can become cancerous over time.

Why is the FIT Important?

The FIT is crucial for early detection of colorectal cancer. By identifying hidden blood in the stool, the test can indicate the presence of polyps or cancer in the colon. Early detection through regular screening can lead to more successful treatment outcomes. This test is typically recommended for adults over the age of 50, but your doctor may suggest it earlier if you have a higher risk of colorectal cancer.

How to Interpret Your FIT Results

FIT results are usually reported as positive or negative. A positive result means that blood was detected in your stool sample, while a negative result means no blood was found. The typical adult range for this test is 0 to 10 µg Hb/g, with results typically reported as positive or negative around the 10 µg Hb/g threshold. It's important to remember that a positive result does not necessarily mean you have cancer, but it does require further investigation by a healthcare professional.

Factors Affecting FIT Results

Several factors can influence the results of a FIT. Dietary factors, such as eating red meat or taking certain medications, do not affect the FIT, which is an advantage over older guaiac-based tests. However, other factors like hemorrhoids or menstruation can sometimes cause a false positive result. It's important to follow the test instructions carefully to ensure accurate results.

Frequently Asked Questions

What should I do if my FIT result is positive? If your FIT result is positive, it means that blood was detected in your stool. This does not necessarily mean you have cancer, but you should consult with your doctor for further evaluation, which may include additional tests such as a colonoscopy.

Can I prevent a positive FIT result? While you cannot prevent a positive result, maintaining a healthy lifestyle and regular screening can help manage your risk of colorectal cancer. Eating a balanced diet, exercising regularly, and avoiding smoking are good practices.

How often should I have a FIT? Screening recommendations can vary, but it is generally advised for adults over 50 to have a FIT annually. Your doctor may recommend a different schedule based on your personal risk factors.

Is the FIT test painful or uncomfortable? The FIT test is non-invasive and involves collecting a small stool sample at home, making it a comfortable and easy process for most people.

Are there any dietary restrictions before taking the FIT? Unlike older stool tests, the FIT does not require any dietary restrictions before taking the test, which makes it more convenient.

When to see a doctor

You should see a doctor if your FIT result is positive, as this indicates the presence of blood in your stool that needs further investigation. Additionally, if you experience symptoms such as unexplained weight loss, persistent abdominal pain, changes in bowel habits, or visible blood in your stool, it's important to seek medical advice. Regular screening and consultation with your healthcare provider are key to maintaining your health.

This information is meant to inform and educate. Always make health decisions in consultation with your healthcare provider.