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Utah Agriculture in the Classroom

Agricultural Literacy Curriculum Matrix

Companion Resource


PTC Paper

Are you a "taster" or a "non-taster?" PTC paper is used to test whether or not a person can taste the bitter flavor of phenylthiocarbamide (PTC). The ability to taste or not taste PTC is conveyed by a single gene, TAS2R38, that codes for a taste receptor on the tongue. On average, 75% of people can taste PTC and 25% cannot. Each vial contains 100 testing strips. Order these testing strips online from

Lynn Wallin
National Center for Agricultural Literacy
Lessons Associated with this Resource