Measuring skin carotenoids (IMAGE) American Society for Nutrition Caption A noninvasive spectroscopy instrument called a VeggieMeter was used to detect and quantify carotenoids in the skin of the study participants. Credit Suresh Mathews, Samford University Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.