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Mold-Free Coffee: What the Evidence Says

✓ Updated October 15, 2026
Green and roasted coffee beans with a magnifying glass

The mycotoxin that comes up most in coffee is ochratoxin A (OTA), which can form when beans are dried or stored poorly.

The facts

  • Regulated: the EU caps OTA at 3 µg/kg for roasted and ground coffee and 5 µg/kg for soluble (instant) coffee (EU Regulation 2022/1370).
  • Roasting helps, unreliably: reported reductions range widely, from 0% to 97% across studies. One study reported an average reduction of about 66.5% (PubMed; review).
  • Prevention matters most: fast drying, low moisture, clean storage, and removing damaged beans (review).

Which brands say they test?

BrandTesting claimResults public?
Purity CoffeeEvery green lot tested by an ISO 17025 lab for mycotoxinsSays it publishes results (Purity)
BulletproofTests every green shipment for mold toxins and heavy metalsProduct-specific results not public (Bulletproof)
LifeboostThird-party tests for mycotoxins, heavy metals, pesticidesResults not linked on the page we reviewed (Lifeboost)

"Mold-free" is a marketing term with no regulatory definition. Published, batch-specific results mean more than the label.

We've purchased coffees for Evident testing and will update this page.