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The Best Way to Measure Vitamin A

Vitamin A deficiency is a cause of significant disease worldwide, especially among women and children. Simple, reliable techniques for evaluating vitamin A status in populations are necessary to assess the need for vitamin A supplementation initiatives and to monitor their effectiveness. The most commonly used indicator of vitamin A status is the serum retinol concentration. However, retinol is unstable when exposed to heat or light, and the techniques used to measure it in the blood require...

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