A scientist in nitrile gloves drawing a dōTERRA Cedarwood essential oil sample into a syringe for GC/MS analysis, a chromatogram on the monitor behind
CPTG Certified Pure Tested Grade About dōTERRA · Quality standard

CPTG® Certified Pure Tested Grade quality standard.

The internal quality standard dōTERRA uses to assess the identity, purity, and consistency of its essential oils.

What CPTG® exists to do

Verification and transparency — not marketing.

CPTG Certified Pure Tested Grade® is the internal quality standard used by dōTERRA to assess the identity, purity, and consistency of its essential oils.

This standard exists to ensure that every batch of essential oil meets defined quality benchmarks before it is made available for use. It focuses on verification and transparency — not marketing claims, outcomes, or therapeutic promises. CPTG® is applied across sourcing, testing, and release processes to support responsible product use and consumer confidence.

How CPTG® works in practice

A multi-stage process, not a single test.

CPTG® is a multi-stage testing and verification process applied from sourcing through to release.

  1. 1

    Botanical identity verification

    Oils are assessed to confirm the correct plant species and part used.

  2. 2

    Chemical profiling

    Gas Chromatography and Mass Spectrometry (GC/MS) are used to analyse the chemical composition of each oil.

  3. 3

    Purity screening

    Testing identifies the presence of fillers, synthetic compounds, or contaminants.

  4. 4

    Batch-level consistency

    Each production batch undergoes individual review before release.

  5. 5

    Third-party verification

    Independent laboratories conduct additional testing to confirm internal results.

This framework applies to essential oils only — not supplements, blends, or finished products that contain non-plant ingredients.

For clarity

What CPTG® is — and is not.

What it is
  • A quality assurance process focused on botanical identity, purity, and chemical consistency.
  • A testing protocol used at multiple stages from sourcing to finished product.
  • A transparency commitment — results are made available through Source to You® batch codes on product labels.
What it is not
  • Not a therapeutic claim — CPTG® makes no statements about health outcomes, efficacy, or safety of use.
  • Not a regulatory certification — it is an internal standard, not a government-issued or third-party certification.
  • Not a comparison tool — benchmarks are proprietary; they aren't designed to rate against other companies' products.
Why CPTG® testing matters to you

Removing the uncertainty.

The essential oil market is unregulated for purity standards. Products can be labelled "100% pure" or "therapeutic grade" without independent verification. Synthetic additives, carrier oil dilution, or contamination from improper distillation can all compromise what you're actually using — and you'd never know from the label.

CPTG® testing exists to remove that uncertainty. Every bottle is traced back to source materials, analysed for chemical accuracy, and screened for adulterants. When you see CPTG® on a dōTERRA product, you know exactly what plant material was used, where it came from, and that it passed multi-stage verification before reaching you.

  • Safety — you're not applying unknown substances to your skin or diffusing synthetic compounds in your home.
  • Consistency — the bottle you buy today performs the same way as the bottle you bought six months ago.
  • Transparency — look up the batch code on any bottle and see the actual test results for that specific batch.
Macro close-up of a dōTERRA essential oil bottle showing its Source to You batch code and expiry date
How this relates to My Wellness Project

Quality you can trace.

My Wellness Project exclusively features dōTERRA essential oils because CPTG® testing aligns with our commitment to transparency and evidence-based wellness. When you purchase the Sleep Well Pack or any essential oil product through My Wellness Project, you receive CPTG®-certified oils with batch-specific test results available via batch code, sourced from verified growing regions and processed using distillation methods that preserve therapeutic plant compounds.

What this means for your sleep protocol

The Sleep Well Pack features CPTG®-certified Lavender essential oil and Lavender Peace Restful Blend. These aren't generic lavender fragrances or diluted aromatherapy products — they're chemically verified plant extracts that consistently deliver the aromatic compounds associated with rest and relaxation. When your sleep depends on product quality, CPTG® testing removes the guesswork.

Explore the Sleep Well Pack
Verify it yourself

Where to find more information.

Always read the label and follow the directions for use.

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