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. 2004 Apr 19;101(17):6659–6663. doi: 10.1073/pnas.0308291101

Table 5. Blood levels of antioxidants and minerals.

Participant Vitamin E, mg/liter Vitamin A, mg/liter β-Carotene, mg/liter Selenium, ppm packed RBC Zinc, ppm packed RBC Magnesium, ppm packed RBC
CR1 32.02 0.75 0.52 0.21 7.19 40.19
CR2 6.54 0.25 1.06 0.12 6.42 25.27
CR3 10.19 0.49 1.05 0.25 10.04 48.25
CR4 14.22 0.86 2.57 0.12 6.75 34.17
CR5 11.89 0.45 2.16 0.11 6.83 32.16
CR6 12.12 0.46 2.84 0.11 7.23 44.10
CR7 17.45 1.13 2.21 0.26 6.44 35.32
CR8 25.39 1.14 1.62 0.24 6.51 45.34
CR9 11.32 0.85 3.18 0.25 6.32 40.00
CR10 17.53 1.29 1.88 0.35 7.23 35.35
Reference range 12-50 0.5-1.2 0.4-3.5 0.12-0.4 6-11 40-80

The levels of vitamin E, β-carotene, and minerals, including selenium, zinc, and magnesium, have been measured in 10 of the 18 CR subjects (these measurements were provided by Richard S. Lord, Metametrix Clinical Laboratory, Norcross, GA).