Yes, Nutricost Protein is third-party tested. Nutricost, known for its transparency and affordability, ensures that its products, including protein powders, are tested by independent laboratories. Nutricost works with reputable third-party testing labs, such as ISO-accredited laboratories, to verify the quality, purity, and potency of its supplements. These labs mainly include Analytical Resource Laboratories, Dyad Labs and Eurofins. These labs test for a range of contaminants, including heavy metals, microbial growth, and other impurities, to ensure that the product is safe and meets label claims.