There is no enforceable US federal standard for what avocado oil is. The U.S. Pharmacopeia has proposed standards. The FDA has not adopted them. Mexico and CODEX Alimentarius have separate frameworks. In the absence of enforcement, the U.S. retail aisle for avocado oil functions on trust.
In 2020, the UC Davis Olive Center ran the first comprehensive audit of US retail avocado oil quality and purity.1 The methodology: 22 commercial samples from US retail, tested against the proposed U.S. Pharmacopeia / Mexican / CODEX standards for free fatty acids, peroxide value, fatty-acid profile, and unsaponifiable matter. The findings, in Food Control:
The most jarring single finding: three of the twenty-two samples — including two labeled extra virgin — were adulterated with soybean oil at levels approaching 100%. The bottles on the shelf were essentially soybean oil with avocado-oil labels.1
The second audit.
In 2023, the same UC Davis team ran a follow-up specifically targeting private-label / store-brand avocado oils — 36 samples from US and Canadian grocery chains. Same methodology, larger sample, more granular reporting.2
The common adulterants the 2023 audit flagged: high-oleic sunflower, high-oleic safflower, canola, and soybean oil. The signature: elevated stearic acid combined with low palmitoleic acid — a fingerprint that doesn’t match true avocado oil’s fatty-acid profile.2
One of the report’s most quoted lines, on the relationship between price and purity:
Paying premium prices for an avocado-oil bottle doesn’t buy you a pure avocado oil. Sometimes it does, but the audit data shows it’s not even close to a reliable signal.
What this actually tells you.
Avocado oil’s nutritional case is real. The fatty-acid profile in genuine avocado oil — high oleic, low PUFA, moderate saturated — is a legitimate procurement case in theory. In practice, the U.S. retail supply chain has been so heavily compromised that the audit data has to inform procurement, not the label.
For a manufacturer or foodservice operator who needs auditable single-origin oil with a fatty-acid profile they can specify and verify, the avocado-oil supply chain is, on the published UC Davis data, not where you want to be sourcing it from. A single-source supply with a third-party COA per lot is not optional — it’s the only way to know what’s in the bottle.
This isn’t a knock on avocado oil — it’s a knock on its supply chain.
Genuine, properly-pressed avocado oil is a perfectly defensible cooking oil. The problem isn’t the oil — it’s that the US retail supply has been compromised enough that the label is no longer reliable evidence of what’s in the bottle. If you source avocado oil with full chain-of-custody from a producer you can audit, the published purity concerns don’t apply. TOI’s argument isn’t “don’t use avocado oil” — it’s “know what’s in your bottle, on every lot, with documentation you can verify.”
