This test uses a double antibody assay to selectively detect faecal occult blood at 50 ng/ml or higher, or 6 μg/g faeces. In addition, unlike guaiac assays, the accuracy of the test is not affected by the diet of the patients. 

There are some diseases that can cause blood in the faeces. This blood is known as faecal occult blood (FOB), human occult blood, or human haemoglobin. 

During the early stages of some gastrointestinal problems, there may not be many visible symptoms aside from occult blood. The conditions can include:

- Colon cancer

- Ulcers

- Polyps

- Colitis

- DIverticulitis

- Fissures

When an early detection occurs, 9 out of 10 bowel cancer cases can be treated successfully. 

1. Secure the collection paper to the toilet using the adhesive tabs. Collect the stool sample in the collection paper. 

2. Unscrew the cap of the specimen collector tube, then insert the blue applicator into the stool in at least 3 different places. You only need a small sample, about the size of a grain of rice. Screw the applicator back on tightly, then shake the tube to mix the specimen and the extraction buffer. 

3. You can now flush the stool and collection paper down the toilet - the paper is biodegradable.

4. Remove the test from the foil pouch. 

5. Unscrew the lid of the extraction buffer, break off the tip of the dropper then transfer 8-10 full drops of the extracted specimen to the reaction tube. Then with arrows pointing towards the extraction buffer, immerse the dipstick to the maximum line and start a timer. 

6. Read the results 5 minutes after dispensing the specimen. Do not read the results after 10 minutes.