NIST Micronutrients Measurement Quality Assurance Program Winter and Summer 2016 Comparability Studies: Results for Round Robin LXXIX and LXXX Fat-Soluble Vitamins and Carotenoids in Human Serum

The National Institute of Standards and Technology coordinates the Micronutrients Measurement Quality Assurance Program (MMQAP) for laboratories that measure fat-soluble vitamins and carotenoids in human serum and plasma. This report describes the design of and results for the Winter and Summer 2016 MMQAP measurement comparability improvement studies: 1) Round Robin LXXIX Fat-Soluble Vitamins and Carotenoids in Human Serum (RR79) and 2) Round Robin LXXX Fat-Soluble Vitamins and Carotenoids in Human Serum (RR80). The RR79 samples were shipped in early March 2016, with results due May 16, 2016. The RR80 samples were shipped in late June 2016, with results due September 12, 2016.