Olive Oil Lab Analysis Database: Polyphenol Results

Compare olive oil lab analysis results for selected extra virgin olive oils, including measured polyphenol levels, cultivar, origin and harvest information.

The Olive Oil Hub Lab Analysis Database brings laboratory information together in one place, making it easier to understand and compare extra virgin olive oils using measurable data.

Rather than relying only on descriptions such as robust, early harvest or high phenolic, we publish laboratory results supplied by producers or third-party laboratories where these are available.

Laboratory results relate to the specific samples tested at a particular time. Polyphenol levels can vary between harvests and batches and can change naturally during storage.

Current data: 2025–2026 harvest
Last updated: September 2026

Extra Virgin Olive Oil Lab Analysis Results

*Polyphenol values shown are laboratory results for the samples analysed at the relevant time. They should not be interpreted as a guaranteed current concentration in every bottle.

As laboratory analyses for the 2026–2027 harvest become available, this database will be updated with the new results while maintaining clear identification of the relevant harvest.

Understanding Olive Oil Polyphenol Levels

Polyphenol concentration in extra virgin olive oil is commonly reported in milligrams per kilogram (mg/kg).

An olive oil polyphenol test provides quantitative information about the sample analysed. However, the number should be considered together with the harvest, analysis date, analytical method and reporting basis.

Different laboratories and analytical methods can measure or report phenolic compounds differently. Results obtained using different methods should therefore not automatically be considered directly equivalent.

This context is particularly important when comparing extra virgin olive oils based on their reported polyphenol levels.

Why Can Olive Oil Lab Analysis Results Change?

Extra virgin olive oil is an agricultural product, so its composition naturally varies.

Measured polyphenol levels can be influenced by factors including:

olive cultivar · climate · growing conditions · olive maturity · harvest timing · extraction · filtration · storage · temperature · oxygen · light · time

Even an extra virgin olive oil produced from the same cultivar and grove can return a different laboratory result in a subsequent harvest.

Polyphenol concentrations can also change during storage. A laboratory result should therefore be understood as a measurement of the sample at the time of analysis, rather than a permanent characteristic of a product.

For more information, read our Polyphenol Degradation in Extra Virgin Olive Oil guide.

How to Read an Olive Oil Laboratory Analysis

When comparing olive oil lab analysis results, look beyond the headline polyphenol number.

Check the Harvest

Always identify the harvest associated with the result. Olive oil is an agricultural product, and laboratory values can change from one harvest to the next.

Check the Analysis Date

The laboratory result represents the sample when it was analysed. It does not mean that its measured concentration will remain unchanged throughout the life of the oil.

Check the Analytical Method

Different analytical methods may measure and report phenolic compounds differently.

When comparing two olive oil polyphenol results, check whether the testing methods are comparable wherever this information is available.

Check the Units

Confirm how the laboratory has expressed the result. Results using different units or reporting conventions may not be directly comparable.

Olive Oil Hub’s Approach to Laboratory Data

Olive Oil Hub was founded in Australia in 2020 as part of Bottega 1900 with a focus on extra virgin olive oil, producer provenance, education and greater transparency around polyphenol information.

Where laboratory data is available, we aim to publish the measured results supplied by producers or third-party laboratories rather than relying solely on descriptive marketing terminology.

Our approach is simple:

Know the producer. Know the cultivar. Know the harvest. Read the analysis. Understand the number.

Laboratory analysis is one part of understanding an extra virgin olive oil. Provenance, freshness, production, storage and sensory characteristics also provide important information.

For a broader explanation of olive oil polyphenols, visit The Polyphenol Hub.

Frequently Asked Questions About Olive Oil Lab Analysis

What does mg/kg mean in an olive oil polyphenol test?

Mg/kg means milligrams per kilogram. It is one way laboratories report the measured concentration of polyphenols in an olive oil sample.

Is 500 mg/kg a high polyphenol level?

For educational comparison purposes, Olive Oil Hub internally categorises laboratory results from 500–749 mg/kg as High Concentration.

This is an Olive Oil Hub internal classification and not an official Australian regulatory or medical classification.

Is 1,000 mg/kg a high polyphenol level?

Olive Oil Hub internally categorises laboratory results of 1,000 mg/kg and above as Exceptional Concentration for educational comparison purposes.

This terminology is an Olive Oil Hub internal classification and does not represent an Australian regulatory or medical threshold.

Can olive oil laboratory results be compared?

Laboratory results can provide useful comparative information, but context matters.

The analytical method, reporting basis, units, harvest and analysis date should be considered. Results obtained using different testing methodologies may not be directly equivalent.

Does peppery olive oil mean it has more polyphenols?

Bitterness and pungency can be associated with phenolic compounds in extra virgin olive oil, but sensory characteristics cannot determine an exact polyphenol concentration.

Quantitative measurement requires laboratory analysis.

Do olive oil polyphenol levels change over time?

Polyphenol concentrations can change during storage. The extent of change can depend on the characteristics of the oil as well as factors such as time, temperature, oxygen, light and packaging.

For this reason, Olive Oil Hub presents polyphenol figures as laboratory results at the time of analysis, rather than guaranteed current concentrations.

Important Information & Disclaimer

Polyphenol values displayed in the Olive Oil Hub Lab Analysis Database are based on laboratory analyses provided by producers or third-party laboratories and represent results obtained for the specific samples tested at the relevant time.

Results may vary between harvests, batches and individual samples. Polyphenol concentrations can also change naturally over time and according to processing, packaging and storage conditions. Where analytical methods or reporting conventions differ, results may not be directly comparable.

Olive Oil Hub’s concentration categories are internal educational and comparative guidelines only. They are not medical, therapeutic or Australian regulatory classifications.

Information on this page is provided for general informational and educational purposes. It should not be interpreted as medical advice or as representing that a particular extra virgin olive oil will diagnose, treat, cure or prevent disease or produce a particular health outcome.