Scratch testing is sensitive; it will rarely miss a true case of a peanut allergy. But it isn't especially specific, meaning ...

DEAR DR. ROACH: I recently underwent skin scratch testing for food allergies. I was shocked that among the positive findings ...

Scratching is the term used to describe the resistance of a solid body to penetration by an edge or protuberance on a second body that is traveling along its surface, and is typically equated with a ...