The Stack3d Certified program was originally created to help highlight honest, non-amino spiked, high quality protein powders. The way the test works is we purchase the supplement from a randomly selected retailer, send it straight to the lab, then post the results on our website.
Each protein is tested for free form amino acids as well as other ingredients used for protein spiking. We also test for a total protein amount, proving that the supplement gets all of its protein from the right sources and that it has the amount listed on its label. You can see all of the proteins that have passed our Stack3d Certified test and their results below.