Reported effects of long-term freezer storage on concentrations of retinol, beta-carotene, and alpha-tocopherol in serum or plasma summarized.

@article{Comstock1993ReportedEO,
  title={Reported effects of long-term freezer storage on concentrations of retinol, beta-carotene, and alpha-tocopherol in serum or plasma summarized.},
  author={George W. Comstock and Anthony J. Alberg and Kathy J. Helzlsouer},
  journal={Clinical chemistry},
  year={1993},
  volume={39 6},
  pages={1075-8}
}
A literature review of the effects of long-term freezer storage on concentrations of antioxidant micronutrients in serum or plasma showed that a high proportion of the studies that compared the concentrations of retinol, beta-carotene, or alpha-tocopherol in fresh and stored serum were deficient because of small numbers of observations, imprecise descriptions of procedures, and short periods of storage. Data from nested case-control studies of the associations of these micronutrients with… CONTINUE READING
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