A rapid method is described for measuring the antioxidant activity of low density lipoproteins. Studies were undertaken on individuals attending a hyperlipidaemia clinic, an unsupplemented group and a group after supplementation with 300 mg dl-α-tocopherol acetate for nine weeks. The results show a positive correlation between the antioxidant activity and α-tocopherol content of LDL in the supplemented group.
