Hi Simon, Our lab test result for EGCG gives a positive result. Purecha contains the highest EGCG with 16.6 followed by Premiumcha with 15.5 and finally standard quality Uji Matcha with 10.6 Attached is the official document of the result. The result showed that your matcha is better than that from Japan supplier. Regards, Azrin CEO of AXG Wellness.