CPTG Quality Testing
Every batch of dōTERRA® essential oils is subjected to strict requirements set forth in the CPTG Certified Pure Tested Grade® quality protocol. This protocol ensures potency, purity, and consistency batch to batch.
The CPTG Certified Pure Therapeutic Grade® quality protocol includes the following tests:
- Organoleptic testing
- Microbial testing
- Gas chromatography
- Mass spectrometry
- Fourier Transform Infrared spectroscopy (FTIR)
- Chirality testing
- Isotopic analysis
- Heavy metal testing
*CPTG Certified Pure Therapeutic Grade® is a registered trademark of dōTERRA Holdings, LLC and represents internal standards of quality assessment and material control. The CPTG testing protocols require the use of independent laboratories for CPTG standardization and quality testing. The CPTG protocol is not administered by government or industry regulatory agencies and does not imply regulatory approval of dōTERRA products.