Karen W Andrews

Summary

Affiliation: Agricultural Research Service
Country: USA

Publications

  1. pmc Analytical ingredient content and variability of adult multivitamin/mineral products: national estimates for the Dietary Supplement Ingredient Database
    Karen W Andrews
    Nutrient Data Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA, Beltsville, MD
    Am J Clin Nutr . 2016
  2. ncbi request reprint The caffeine contents of dietary supplements commonly purchased in the US: analysis of 53 products with caffeine-containing ingredients
    Karen W Andrews
    Nutrient Data Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, US Department of Agriculture, Beltsville, MD, USA
    Anal Bioanal Chem 389:231-9. 2007
  3. pmc Iodine in food- and dietary supplement-composition databases
    Pamela R Pehrsson
    Nutrient Data Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA, Beltsville, MD
    Am J Clin Nutr 104:868S-76S. 2016
  4. pmc Interlaboratory Trial for Measurement of Vitamin D and 25-Hydroxyvitamin D [25(OH)D] in Foods and a Dietary Supplement Using Liquid Chromatography-Mass Spectrometry
    Janet Maxwell Roseland
    Nutrient Data Laboratory, Agricultural Research Service, U S Department of Agriculture, 10300 Baltimore Avenue, Building 005, BARC West, Beltsville, Maryland 20705, United States
    J Agric Food Chem 64:3167-75. 2016

Collaborators

Detail Information

Publications4

  1. pmc Analytical ingredient content and variability of adult multivitamin/mineral products: national estimates for the Dietary Supplement Ingredient Database
    Karen W Andrews
    Nutrient Data Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA, Beltsville, MD
    Am J Clin Nutr . 2016
    ..Establishing the health benefits and harms of MVMs requires accurate estimates of nutrient intake from MVMs based on measures of actual rather than labeled ingredient amounts...
  2. ncbi request reprint The caffeine contents of dietary supplements commonly purchased in the US: analysis of 53 products with caffeine-containing ingredients
    Karen W Andrews
    Nutrient Data Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, US Department of Agriculture, Beltsville, MD, USA
    Anal Bioanal Chem 389:231-9. 2007
    ..Lot-to-lot variability (n = 2 or 3) for caffeine in most products (72%) was less than 10%...
  3. pmc Iodine in food- and dietary supplement-composition databases
    Pamela R Pehrsson
    Nutrient Data Laboratory, Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA, Beltsville, MD
    Am J Clin Nutr 104:868S-76S. 2016
    ..The goal is to provide, through these 2 harmonized databases and the continuing TDS focus on iodine, improved tools for estimating iodine intake in population studies. ..
  4. pmc Interlaboratory Trial for Measurement of Vitamin D and 25-Hydroxyvitamin D [25(OH)D] in Foods and a Dietary Supplement Using Liquid Chromatography-Mass Spectrometry
    Janet Maxwell Roseland
    Nutrient Data Laboratory, Agricultural Research Service, U S Department of Agriculture, 10300 Baltimore Avenue, Building 005, BARC West, Beltsville, Maryland 20705, United States
    J Agric Food Chem 64:3167-75. 2016
    ..Reproducibility results for the materials were acceptable. Thus, it is possible to obtain consistent results among experienced laboratories for vitamin D3 and 25(OH)D3 in foods and a DS. ..