Thank you for your sharing. AASraw as manufacturer, We take product quality very seriously, I can assure you that our steroid raw powders undergo rigorous testing to meet high industry standards. Our laboratory tests are conducted to ensure the highest purity, and typically, our products are well within the expected range of purity. However, the result you received showing 89% purity is indeed lower than what we would expect. The reason could be testing Methodology, storage and handling..etc. I will ask your customer representative to send you the latest COA so that you can Identify. Besides, we will work with you if you receive low quality AAS from AASraw, please talk more details with your customer representative.