These products can interfere with blood clotting or with other medications used during surgery.

Other topical products may interfere with treatment or cause skin irritation.

This product may interfere with certain lab tests.

This product may interfere with certain lab tests (such as skin tests).

This product may interfere with certain laboratory tests, possibly causing false test results.

This product may interfere with certain laboratory tests (such as urine or blood catecholamines, copper-based urine glucose tests).

In each type of cell, a majority of these genes must be kept permanently switched off since their products would interfere with the cell's specific role.

Other products may interfere with the effects or absorption of benzoyl peroxide and urea topical.

This product may interfere with certain lab tests (including skin tests), possibly causing false test results.

This product may interfere with certain laboratory tests (including allergy skin testing, amylase/lipase levels), possibly causing false test results.