Certification of fat-soluble vitamins,carotenoids, and cholesterol in human serum: Standard reference material 968b |
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| Authors: | Jeanice Brown Thomas Margaret C Kline Susannah B Schiller Polly M Ellerbe Lorna T Sniegoski David L Duewer Katherine E Sharpless |
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| Institution: | (1) Analytical Chemistry Division, NIST, Gaithersburg, MD 20899, USA;(2) Biotechnology Division, NIST, Gaithersburg, MD 20899, USA;(3) Statistical Engineering Division, NIST, Gaithersburg, MD 20899, USA |
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| Abstract: | In Standard Reference Material 968b, fat-soluble vitamins and cholesterol in human serum, certified values are provided for cholesterol, retinol, retinyl palmitate,  -tocopherol, trans- -carotene, total -carotene (trans plus cis isomers), total -carotene, and lutein. Non-certified values are also reported for  -tocopherol (includes -tocopherol),  -tocopherol, zeaxanthin, -cryptoxanthin, trans-lycopene, trans-lycopene, trans--carotene, total lycopene, 9-cis-carotene, 13- plus 15-cis--carotene, and 15-cis--carotene. Both certified and non-certified values are based on the agreement among results from three different liquid chromatographic analytical procedures developed at NIST and from an interlaboratory comparison exercise among institutions that participate in a NIST-managed Micronutrients Measurement Quality Assurance Program. Cholesterol is certified in this material using the NIST isotope dilution/mass spectrometric definitive method. |
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