A doctor's referral and blood drawn at a lab or doctor's office. The lab shouldn't look for a simple vitamin deficiency, but for a balance between antioxidants and damage. A report that interprets your results and recommends changes in your diet or vitamin supplements. Be wary of labs offering expensive products for sale. Results are reliable, but it's unclear how to act on them.
Experts disagree about proper balances of antioxidants and optimal vitamin levels.
Blumberg suggests you get tested, make lifestyle changes you think are wise, and get retested. All rights reserved.