10/21/2026
YOU HEAR THIS ALL THE TIME BUT THERE IS SO MUCH MORE ABOUT IT!
What Is CPTG Testing? How dĹŤTERRA Tests
Essential Oils for Quality and Purity
• CPTG Certified Pure Tested Grade is dōTERRA’s sequence of
rigorous tests applied to the essential oils.
• Testing occurs at multiple points, including distillation at the
source, upon arrival at dōTERRA’s production facility and again
during bottling.
• Testing is conducted by dōTERRA’s in-house laboratory, staffed
by more than 20 scientists, and verified by the Aromatic Plant
Research Center, a respected lab in the essential oil industry.
What Do We Mean By “Pure”?
1. It’s sourced from nature rather than synthetically produced in a lab.
2. It’s authentic. Its botanical identity is verified through testing,
confirming that it is what it says it is.
3. It’s undiluted by fillers or additives. It contains no undisclosed
ingredients like fragrances, dyes, or preservatives.
Why Essential Oil Testing Matters
Essential oils are not regulated under a single,
internationally consistent purity standard.
Terms like “100% pure” and “natural” carry no
legally binding definition in most markets.
Industry estimates suggest that a large
percentage of commercially available essential
oils have been adulterated in some form,
whether diluted with carrier oils, extended with
synthetic aromatic chemicals or blended with
cheaper botanical substitutes.
Without that test, a customer has no way
to know whether the linalool in a bottle
came from a Lavender field in Bulgaria or a
chemical plant