Date:
June 12, 2024
Category:
FOB Rapid Test for Occult Blood (stool)
Rapid test for detecting occult (invisible to the naked eye) blood in stool. FOB (Fecal Occult Blood) is a small amount of blood in the stool that may indicate bleeding from the gastrointestinal tract. The test is suitable for colorectal cancer screening, but does not establish a diagnosis—a positive result must be evaluated by a physician.
About the condition
Minor gastrointestinal bleeding is often invisible to the naked eye, but it can be caused by polyps, hemorrhoids, ulcers, inflammatory bowel diseases, or colorectal cancer. Colorectal cancer often causes no symptoms in its early stages, which is why the fecal occult blood test is used as a screening method; free screening programs for older adults are conducted in many European countries. It is worth getting tested based on age, in case of familial risk, changes in bowel habits, or unexplained anemia; a positive result is not a diagnosis – it is essential to consult a doctor for further tests.
Ingredients
- Test cassette
- Faecal trap
- Package leaflet
- Tube collection tube with extraction buffer.
Instructions
Allow the sample and buffer to cool to room temperature before performing the test
temperature (15-30 °C).
- How to take a stool sample. The faecal sample must be collected in a faecal trap. The faecal trap must
for use regardless of the type of toilet, as it helps to protect the sample from contamination by chemicals and impurities. - How to process a stool sample. Unscrew the cap of the sample collection tube，then insert the sample
a collection applicator in at least 3 different places on the stool sample. Do not hang the faecal sample. Place the cap on the sample collection tube and screw it on tightly, then shake the sample collection tube vigorously until the sample mixes with the extraction buffer. - Keep the bag at room temperature before opening it. Remove the test cartridge from the sealed bag and use as soon as possible. The best results are obtained if the test is carried out immediately after opening the foil bag.
- Hold the sample collection tube upright and open the sample collection tube cover. Invert the sample collection tube and drop 2 full drops of the extracted sample (approx. 80 μL) onto the sample well (S) in the test cartridge and start the timer. Be careful to avoid air bubbles in the sample well (S). See illustration below.
- Check the results after 5 minutes. After 10 min, do not check the result again.
Results
| Positive* | Two coloured lines appear. One coloured line should appear in the control area (C) and the other in the test area (T). *NOTE: The intensity of the colour in the test line area (T) will vary depending on the concentration of blood in the sample. Therefore, any shade in the test line area (T) should be considered a positive result. |
| NEGATIVE | A single coloured line appears in the control area (C). No line is visible in the test line area (T). |
| INVALID | The control line does not appear. The most likely reasons for the non-appearance of the reference line are insufficient sample quantity or an incorrect procedure. Revise the procedure and repeat the test using a new test. If the problem persists, stop using the test kit and contact your local distributor. |
Informative video
Instruction leaflet
Download instructions
Frequently asked questions
What does occult blood in the stool mean?
This is blood that cannot be seen with the naked eye. It can be caused by hemorrhoids, polyps, inflammation, or other intestinal diseases, so a positive result must always be evaluated by a doctor.
Who is the FOB test recommended for?
For people who want to check their gut health, especially those over 50 or those with a family history of colorectal diseases. Lithuania also runs a state colorectal cancer screening program.
Does a negative test mean everything is fine?
A negative result indicates that no blood was detected in the sample. If you are experiencing symptoms—abdominal pain, changes in bowel habits, or visible blood—consult a doctor regardless of the test result.
Where to buy the Testera test?
Testera tests are sold in pharmacies, retail chains, and petrol stations in several European countries. Want to sell Testera products in your country? Contact us – we will offer terms of cooperation.
Rapid tests are for preliminary screening and do not replace a doctor’s consultation.