Quality Standards

Mushrooms take up whatever is in the ground they grow in, so testing is not optional.

Every batch goes to an independent, third-party lab. We screen for heavy metals, mold, yeast, and pesticides, and we measure the beta-glucan content rather than taking the supplier's word for it.

The measured figure is printed on the page for each product, next to the strength we buy that extract at. Where the two differ, you can see it.

Certificates of Analysis are available on request while we prepare them for download.