As a foremost wholesaler of premium Chinese herbs in the US, nuherbs co. is proud to offer nuherbs® Lab Tested Herbs, a full line of geo-authentic, preservative-free, laboratory-tested Chinese herbs and powders. Wild crafted or sourced from one of 52 GAP (Good Agricultural Practices) farms when possible, the herbs are processed at a PIC/S GMP (Pharmaceutical Inspection Cooperation/Scheme - Good Manufacturing Practice) factory. Through better sourcing and processing, nuherbs co. hopes to ensure the sustainability and consistency of the herbs we provide from lot to lot. nuherbs® Lab Tested Herbs are tested for heavy metals, pesticide residuals, and microbial elements. You can rest assured that you are not only buying the highest-quality herbs, but also the correct laboratory-tested herbs. Every herb in this line - in addition to being identified by our Master Herbalist macroscopically - will also be chemically identified when the means to do so is provided in the Chinese Pharmacopeia.