Certified Pure Therapeutic Grade (CPTG)

To ensure that each bottle of essential oil is pure and free from contaminants or synthetic fillers, doTERRA created the CPTG Certified Pure Therapeutic Grade® protocol. The CPTG process includes a rigorous examination of every batch of oil, along with third-party testing to guarantee transparency. 

The CPTG quality testing process includes eight main steps to guarantee that every batch of doTERRA essential oil is pure, unadulterated, and safe for use.

Tests doTERRA uses to ensure essential oil purity:

     1. Organoleptic testing

     2. Microbial testing

     3. Gas chromatography

     4. Mass spectrometry

     5. Fourier-transform infrared spectroscopy (FTIR)

     6. Chirality testing

     7. Isotopic analysis

     8. Heavy metal testing

  1. Organoleptic testing
  2. Microbial testing
  3. Gas chromatography
  4. Mass spectrometry
  5. Fourier-transform infrared spectroscopy (FTIR)
  6. Chirality testing
  7. Isotopic analysis
  8. Heavy metal testing

Some people ask, “Does essential oil purity really matter?” Or, “What happens if I use essential oils that aren’t pure?” 

The answer is yes—essential oil purity matters. If you use an oil that has been adulterated, contaminated, or loaded with synthetic fillers, you will not receive the full natural benefit of the plant. And in some cases, low-quality oils can even be dangerous and pose serious threats to your health. 

This is why doTERRA cares so deeply about essential oil purity. If you use an impure oil, it can be difficult to feel the benefits of the oil and can possibly put your health at risk. However, when you use pure, unadulterated essential oils, they’ll be more effective, and you can stay within the bounds of safe use.