What Does a Positive Faecal Occult Blood Test Actually Mean?

Faecal occult blood test

Key Takeaways

  • A positive faecal occult blood test means that blood has been detected in the stool, even if it is not visible to the naked eye.
  • A positive result does not automatically mean cancer; several digestive conditions may cause blood to appear in stool samples.
  • Further tests, such as a colonoscopy, may help determine the cause of the result.
  • Early follow-up after a positive test result can help identify potential issues sooner.

Many people feel anxious after receiving a positive faecal occult blood test result. It is common for thoughts to immediately jump to serious conditions such as colorectal cancer. However, a positive result does not provide a diagnosis on its own. It simply indicates that small amounts of blood have been detected in the stool sample and further evaluation may be recommended.

Understanding what the result means and what the next steps could involve may help you make informed decisions about your health.

Why Would a Faecal Occult Blood Test Be Done?

A faecal occult blood test (FOBT) is commonly used to detect tiny amounts of blood in stool that may not be visible.

This test may be recommended for:

  • Colorectal cancer screening
  • Individuals with a family history of bowel conditions
  • People experiencing digestive symptoms
  • Routine health screening programmes
  • Individuals within certain age groups where screening may be advised

The test itself is simple and non-invasive, which makes it commonly used as an initial screening tool.

What Does a Positive Faecal Occult Blood Test Mean?

A positive faecal occult blood test means that traces of blood have been found in the stool sample.

However, it is important to understand that:

  • It does not confirm colorectal cancer
  • It does not identify the exact source of bleeding
  • It does not determine how serious the condition may be

Instead, it signals that additional investigation may be needed to understand the reason behind the finding.

What Could Cause a Positive Result?

There are various possible explanations for blood being detected in the stool.

Some examples include:

  • Haemorrhoids (piles)- Swollen blood vessels around the rectum may sometimes bleed.
  • Colon polyps- Polyps are growths in the lining of the colon that can occasionally bleed.
  • Inflammatory bowel conditions- Conditions affecting the digestive tract may sometimes lead to bleeding.
  • Diverticular disease- Small pouches in the bowel wall may bleed in some individuals.
  • Stomach or intestinal ulcers
  • Colorectal cancer

Not every person with a positive test result will have a serious medical condition. The result simply indicates that a clearer assessment may be needed.

What Happens After a Positive Faecal Occult Blood Test?

The next steps can vary depending on your symptoms, medical history and overall assessment.

Your doctor may discuss:

  • Reviewing your symptoms
  • Understanding family medical history
  • Conducting a physical examination
  • Recommending additional investigations

A colonoscopy is commonly used because it allows doctors to examine the large intestine more closely and identify potential causes of bleeding.

Early evaluation may help identify concerns and guide appropriate management.

Should You Be Worried About a Positive Result?

Feeling concerned is understandable. However, worrying before understanding the cause may create unnecessary stress.

Consider these points:

  • Many positive results are linked to non-cancerous causes
  • A screening test is intended to identify possible concerns, not confirm a diagnosis
  • Follow-up assessment helps provide clearer answers
  • Acting on the result may be more helpful than delaying evaluation

The focus should be on understanding the reason for the result rather than assuming the worst.

Frequently Asked Questions

Can a positive faecal occult blood test be wrong?

Yes. Sometimes blood may be detected even when a serious condition is not present. This is why additional assessment may be recommended.

Does a positive result mean I have colorectal cancer?

No. A positive test only indicates the presence of blood in the stool. Various conditions may contribute to this finding.

Will I definitely need a colonoscopy?

The appropriate next step depends on your individual situation and medical assessment. Your doctor can advise on suitable investigations.

What symptoms should I watch for?

Some people may experience symptoms such as:

  • Changes in bowel habits
  • Unexplained weight loss
  • Persistent abdominal discomfort
  • Visible blood in stools

However, some individuals may have no symptoms at all.

Take the Next Step Towards Understanding Your Results

If you have received a positive faecal occult blood test result, seeking timely medical assessment may help provide clarity and guide the next steps. At Clinic for Digestive Surgery, our doctors provide assessment and management for a range of digestive and colorectal conditions in Singapore.

If you would like to better understand your results and discuss appropriate follow-up options, book a consultation with the Clinic for Digestive Surgery today. Early evaluation may help you gain answers and make informed decisions about your digestive health.