Proficiency testing of 25-Hydroxyvitamin D (25-OHD) assays

Outliers in clinical chemistry quality-control schemes.

M. J. R. Healy · Clinical Chemistry · 1979 · 184 citations

Engineering, Quality Metric, Large-scale Quality-control Schemes +17

Use of a common standard improves the performance of liquid chromatography-tandem mass spectrometry methods for serum 25-hydroxyvitamin-D

Graham D. Carter, Julia C. Jones · Annals of Clinical Biochemistry International Journal of Laboratory Medicine · 2008 · 96 citations

An international comparison of vitamin D metabolite measurements.

M. Jongen, F C van Ginkel, W J van der Vijgh et al. · Clinical Chemistry · 1984 · 73 citations · Full text

Nutrition, Metabolomic Profiling, International 19-Laboratory Survey +20

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

G.D. Carter, Julia C. Jones, J. L. Berry · The Journal of Steroid Biochemistry and Molecular Biology · 2007 · 72 citations

Biochemistry, Medicine, Bioanalysis +5

Interlaboratory comparison of 25-hydroxyvitamin D determination.

E. Mayer, H Schmidt-Gayk · Clinical Chemistry · 1984 · 50 citations · Full text

25-Hydroxyvitamin D Determination, Nutrition, Nutrient Bioavailability +14