things to avoid before stool test due to false positive

Also, direct the patient to avoid the following foods for two days before the test:

No, red meat. The chicken and fish were also stopped.

Peroxidase-rich vegetables like turnip, spinach, horseradish, mushrooms, broccoli, beans, cauliflower, oranges, banana, cantaloupe, and grapes.

No raw fruits.

Avoid Vitamin C, which causes a false negative reaction by inhibiting the peroxidase reaction.

https://labpedia.net/stool-examination-part-35-stool-for-occult-blood-ob-fecal-occult-blood/