The test detects tiny amounts of blood you can't normally see in your bowel motions - called Faecal Occult Blood (FOB) test.
Polyps and bowel cancers sometimes bleed, which is why we screen for blood in your bowel motions.
The FOB test does not diagnose bowel cancer, but the results will tell you whether you need an examination of your bowel (a colonoscopy)
The screening can also detect polyps - these are not cancers, but may develop onto cancers overtime. They can be easily removed, reducing the risk of bowel cancer developing.
The test is simple to complete:
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Small samples of bowel motion are collected in the privacy of your home
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The test kit is returned to the laboratory in a specially designed prepaid envelope
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The laboratory analyses the sample and issues the results