We test each batch of our supplements for heavy metals, glyphosate and other contaminants. Note that heavy metals occur in nature and can't be avoided entirely. However, the trace amounts found in our supplements are well below any established safe limits. We also test our supplements for glyphosate (the active ingredient in Roundup). Products with amounts below the detection limit of 100 ng/g are considered glyphosate free.Below are links to the test reports for our current stock:Glyphosate Test Report (Beef Liver Lot 3672109-307)Certificate of Analysis (Beef Liver Lot 3672109-307)Lab Certification (Beef Liver Lot 3672109-307)Gluten and Heavy Metal Test Report (Heart & Spleen Lot 2022212)Note that the If you have any questions or concerns about these reports, please don't hesitate to reach out to us!