In their effort to get a grip on their health, many people are utilizing "alternative" diagnostic tests that claim to identify nutrient deficiencies, environmental toxins, and disease risk factors. Some of these tests are backed good science, others are not, but even the legitimate ones may not be able to provide the type of guidance that patients are seeking. In Part One of this series, Cathy Creger Rosenbaum looks at hair analysis and antioxidant testing.