SUPPLEMENT DIRECT tests EVERY batch of EVERY one of our products at an independant laboratory to assure you of quality. Below are the actual assays for the products we are currently shipping. Still skeptical?... We use widely respected:  

San Rafael Chemical Services

2180 E. 4500 S. #125

Salt Lake City, UT. 84117

801-277-8228

If you feel you need to verify the tests they will gladly verify the test were done, but they do not have the manpower to discuss the tests result or explain them to you. Give them a call they know us well.