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FOB Test

The Willi Fox FOB rapid test is used for the detection of human hemoglobin in stool. The detection limit is 2 μg human hemoglobin/g faeces or 40ng/ml human hemoglobin in buffer.

Specimen medium

  • Faeces sample


  • Relative sensitivity: 97,3%
  • Relative specificity: 98,4%
  • Overall agreement: 98,2%

Human-occult (invisible) blood in stool can indicate various pathologies in the lower gastrointestinal tract, such as gastric ulcers, polyps, colitis, diverticulitis, hemorrhoids, or colorectal carcinoma.

Early detection of human-occulated blood in the faeces makes it possible to diagnose and treat the above-mentioned diseases at an early stage.


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