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Serum 25-hydroxyvitamin D status of the US population: 1988-1994 compared with 2000-2004.
BACKGROUND Changes in serum 25-hydroxyvitamin D [25(OH)D] concentrations in the US population have not been described. OBJECTIVE We used data from the National Health and Nutrition ExaminationExpand
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Biochemical indicators of B vitamin status in the US population after folic acid fortification: results from the National Health and Nutrition Examination Survey 1999-2000.
BACKGROUND Mandatory folic acid fortification of cereal-grain products was introduced in the United States in 1998 to decrease the risk that women will have children with neural tube defects. Expand
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Combined measurement of ferritin, soluble transferrin receptor, retinol binding protein, and C-reactive protein by an inexpensive, sensitive, and simple sandwich enzyme-linked immunosorbent assay
The measurement of vitamin A (VA) and iron status is very important in the assessment of nutritional deficiencies. The objective of this research was to develop a sandwich ELISA technique for theExpand
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Determination of Folate in Cereal-Grain Food Products Using Trienzyme Extraction and Combined Affinity and Reversed-Phase Liquid Chromatography
A trienzyme treatment (employing rat plasma folate conjugase, α-amylase, and protease), followed by affinity chromatography and reversed-phase HPLC, was evaluated for quantification of folates inExpand
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Pilot Study of Urinary Biomarkers of Phytoestrogens, Phthalates, and Phenols in Girls
Background Hormonally active environmental agents have been measured among U.S. children using exposure biomarkers in urine. However, little is known about their variation by race, age, sex, andExpand
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Biomarkers of Nutrition for Development-Folate Review.
The Biomarkers of Nutrition for Development (BOND) project is designed to provide evidence-based advice to anyone with an interest in the role of nutrition in health. Specifically, the BOND programExpand
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Trends in blood folate and vitamin B-12 concentrations in the United States, 1988 2004.
BACKGROUND Monitoring the folate status of US population groups over time has been a public health priority for the past 2 decades, and the focus has been enhanced since the implementation of a folicExpand
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Vitamin D status: United States, 2001-2006.
The Institute of Medicine (IOM) recently released new dietary reference intakes for calcium and vitamin D. The IOM defined four categories of vitamin D status based on serum 25-hydroxyvitamin DExpand
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Assessment of iron deficiency in US preschool children and nonpregnant females of childbearing age: National Health and Nutrition Examination Survey 2003-2006.
BACKGROUND A new index to determine body iron promises a simpler approach to monitoring iron deficiency (ID) prevalence. OBJECTIVE Our objective was to compare ID defined as body iron <0 mg/kg andExpand
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Estimation of trends in serum and RBC folate in the U.S. population from pre- to postfortification using assay-adjusted data from the NHANES 1988-2010.
The NHANES has monitored folate status of the U.S. population from prefortification (1988-1994) to postfortification (1999-2010) by measuring serum and RBC folate concentrations. The Bio-RadExpand
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