This test is worth a quick look. It shouldn't take long to complete and as I have studied alot on supplements, vitamins, minerals, and herbs can see how the recommendations look pretty knowledgeable. The test is recommended by the Strength Sensei, Charles Polliquin, who trains world-class athletes in a wide variety of sports.
http://advancedpsychcare.tripod.com/sitebuildercontent/sitebuilderfiles/braverman.test.pdf