Yes! All of our Matcha is tested for not only radiation, but also heavy metal, microbes, and any agricultural chemicals. This is performed under the Nal scintillation Survey Meter issued by the Inspection and Safety Division of the Department of Food Sanitation. We are happy to say that our Matcha is free of harmful chemicals and is always within the guidelines of The Department of Food Sanitation of the Ministry of Health, Labor, and Welfare.