Assessment of vitamin D status and definition of a normal circulating range of 25-hydroxyvitamin D

Toll-Like Receptor Triggering of a Vitamin D-Mediated Human Antimicrobial Response

2006 • 3,773 citations

Vitamin D Deficiency and Risk of Cardiovascular Disease

2008 • 2,273 citations

Calcium plus Vitamin D Supplementation and the Risk of Fractures

2006 • 1,833 citations

Serum 25-Hydroxyvitamin D Levels and Risk of Multiple Sclerosis

2006 • 1,832 citations

Hypovitaminosis D is associated with insulin resistance and β cell dysfunction

2004 • 1,601 citations

Structure-Function Relationships in the Vitamin D Endocrine System*

1995 • 1,182 citations

Circulating 25-Hydroxyvitamin D Levels Indicative of Vitamin D Sufficiency: Implications for Establishing a New Effective Dietary Intake Recommendation for Vitamin D

2005 • 1,165 citations

25-Hydroxyvitamin D and Risk of Myocardial Infarction in Men<subtitle>A Prospective Study</subtitle>

2008 • 1,132 citations

Vitamin D₂Is Much Less Effective than Vitamin D₃in Humans

2004 • 1,096 citations

Prospective Study of Predictors of Vitamin D Status and Cancer Incidence and Mortality in Men

2006 • 1,048 citations

Hypovitaminosis D prevalence and determinants among African American and white women of reproductive age: third National Health and Nutrition Examination Survey, 1988–1994,

2002 • 1,010 citations

Calcium Absorption Varies within the Reference Range for Serum 25-Hydroxyvitamin D

2003 • 989 citations

Calcium plus Vitamin D Supplementation and the Risk of Colorectal Cancer

2006 • 967 citations

COMPETITIVE PROTEIN-BINDING RADIOASSAY FOR 25-HYDROXYCHOLECALCIFEROL¹

1971 • 908 citations

Plasma 25-Hydroxyvitamin D Levels and Risk of Incident Hypertension

2007 • 906 citations

Prevalence of Cardiovascular Risk Factors and the Serum Levels of 25-Hydroxyvitamin D in the United States

2007 • 830 citations

Vitamin D2 Is as Effective as Vitamin D3 in Maintaining Circulating Concentrations of 25-Hydroxyvitamin D

2007 • 777 citations

Vitamin D supplementation in early childhood and risk of type 1 diabetes: a systematic review and meta-analysis

2008 • 634 citations

The case against ergocalciferol (vitamin D2) as a vitamin supplement1,2

2006 • 519 citations

C-3 Epimers Can Account for a Significant Proportion of Total Circulating 25-Hydroxyvitamin D in Infants, Complicating Accurate Measurement and Interpretation of Vitamin D Status

2006 • 468 citations

Determination of vitamin D status by radioimmunoassay with an 125I-labeled tracer

1993 • 439 citations

Age-Related Changes in the 25-Hydroxyvitamin D Versus Parathyroid Hormone Relationship Suggest a Different Reason Why Older Adults Require More Vitamin D

2003 • 428 citations

Plasma Vitamin D Metabolites and Risk of Colorectal Cancer in Women

2004 • 423 citations

Routine Isotope-Dilution Liquid Chromatography–Tandem Mass Spectrometry Assay for Simultaneous Measurement of the 25-Hydroxy Metabolites of Vitamins D2 and D3

2005 • 381 citations

Plasma 25-Hydroxyvitamin D and 1,25-Dihydroxyvitamin D and Risk of Breast Cancer

2005 • 360 citations

Association between serum concentrations of 25-hydroxyvitamin D3 and periodontal disease in the US population

2004 • 337 citations

Serum 25-hydroxyvitamin D and risk of post-menopausal breast cancer--results of a large case-control study

2007 • 281 citations

25-Hydroxyvitamin D, insulin resistance, and kidney function in the Third National Health and Nutrition Examination Survey

2006 • 252 citations

HPLC Method for 25-Hydroxyvitamin D Measurement: Comparison with Contemporary Assays

2006 • 243 citations

A Rapid Assay for 25-OH-Vitamin D₃Without Preparative Chromatography*

1974 • 239 citations

Analytical and clinical validation of the 25 OH vitamin D assay for the LIAISON® automated analyzer

2004 • 233 citations

A Nested Case-Control Study of Plasma 25-Hydroxyvitamin D Concentrations and Risk of Colorectal Cancer

2007 • 230 citations

Fighting infections with vitamin D

2006 • 198 citations

Circulating 25-Hydroxyvitamin D Levels Predict Survival in Early-Stage Non–Small-Cell Lung Cancer Patients

2007 • 195 citations

Association between serum concentrations of 25-hydroxyvitamin D and gingival inflammation

2005 • 177 citations

Serum 25-Hydroxyvitamin D and Hip Fracture Risk in Older U.S. White Adults

2007 • 173 citations

Association between serum concentrations of 25-hydroxyvitamin D and gingival inflammation

2005 • 166 citations

Improved radioimmunoassay for vitamin D and its use in assessing vitamin D status.

1985 • 139 citations

Vitamin D insufficiency in children, adolescents, and young adults with cystic fibrosis despite routine oral supplementation

2007 • 138 citations

Quantification of Serum 25-Hydroxyvitamin D₂and D₃Using HPLC–Tandem Mass Spectrometry and Examination of Reference Intervals for Diagnosis of Vitamin D Deficiency

2006 • 132 citations

Cell Defenses and the Sunshine Vitamin

2007 • 110 citations

Plasma 25-Hydroxyvitamin D and 1,25-Dihydroxyvitamin D and Risk of Incident Ovarian Cancer

2007 • 103 citations

Vitamin D receptor (VDR) gene polymorphisms and haplotypes, interactions with plasma 25‐hydroxyvitamin D and 1,25‐dihydroxyvitamin D, and prostate cancer risk

2007 • 99 citations

Two direct (nonchromatographic) assays for 25-hydroxyvitamin D.

1984 • 97 citations

The anomalous behaviour of exogenous 25-hydroxyvitamin D in competitive binding assays

2007 • 72 citations

Importance of the isolation of 25-hydroxyvitamin D before assay.

1978 • 48 citations