As of today, SARM ingredients are not regulated by any government body. This means quality can vary widely from supplier to supplier. As of the updated version of this book, we purchased SARMs from the top 10 SARM suppliers and had each sample tested. We used HPLC testing, which is the most accurate way to test for the presence of these types of compounds. We tested the top 10 because we couldn’t financially afford to test every SARMs company on the planet.

After testing multiple SARM companies, we found that only two passed our testing, affirming that they sold what they claimed on the bottle. These companies were Umbrella Labs and Research Chemicals.

Umbrella Labs: https://umbrellalabs.is/

ResearchChemicals: https://researchchemicals.co/