Always! You can view our kratom Certificates of Analysis here. All of our kratom products are lab tested by an independent laboratory. We test our kratom leaves for alkaloid concentrations, heavy metals, and microbiological contaminants. Only the best kratom makes it into Top Tree Herbs’ kratom tea and other products. We are dedicated to supporting your health and safety – it drives everything that we do at Top Tree Herbs. In addition to providing lab tested kratom tea, we also advocate for improved kratom regulation across the country.