How accurate are assays for 25-hydroxyvitamin D? Data from the international vitamin D external quality assessment scheme.
Carter
Graham D
GD
Endocrine Laboratory, Clinical Chemistry Department, Charing Cross Hospital, London, United Kingdom.
Carter
Richard
R
Jones
Julia
J
Berry
Jacqueline
J
D015652:25-Hydroxyvitamin D 2 / Q000097:blood / Q000592:standards; D019411:Clinical Laboratory Techniques / Q000592:standards; D006801:Humans; D007391:International Cooperation; D011786:Quality Control; D012044:Regression Analysis; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood* / Q000592:standards
D014807:Vitamin D; D015652:25-Hydroxyvitamin D 2; C104450:25-hydroxyvitamin D