Vitamin A Scanner
In recent years, noninvasive spectroscopic methods such as reflectance spectroscopy have been introduced to measure carotenoid antioxidant levels in the skin. The advantages of these methods are quick and convenient; the expenditure of time necessary for one measurement is less than 30 seconds. However, this noninvasive method can not be directly applied to measure the vitamin A plasma concentration. Therefore, the first stage of our research plan is to collect enough data from human subjects to find out their correlations as described in the diagram below.
- Correlation between the skin level of carotenoids and the plasma concentration carotenoids (e.g. β-carotene).
- Correlation between the β-carotene and retinol plasma concentrations.
- Correlation between the β-carotene skin level and the vitamin A (retinol) plasma concentration.