Tests for the detection of occult blood rely on which chemical reaction?
A) Reaction of hemoglobin with hydrogen peroxide
B) Pseudoperoxidase activity of hemoglobin
C) Reaction of hemoglobin with peroxidase
D) Pseudoperoxidase activity of hydrogen peroxide

Question

Quizplus · Accepted Answer

Tests for the detection of occult blood, such as the Guaiac-based fecal occult blood test (gFOBT), rely on the pseudoperoxidase activity of hemoglobin. This means that hemoglobin acts similarly to peroxidase enzymes, catalyzing the oxidation of a substrate (in this case, guaiac) in the presence of hydrogen peroxide, leading to a color change that indicates the presence of blood.

Tests for the Detection of Occult Blood Rely on Which