Proficiency testing of 25-hydroxyvitamin D (25-OHD) assays.
Carter
G D
GD
Clinical Biochemistry, Imperial College Healthcare NHS Trust, Charing Cross Hospital, Fulham Palace Road, London W6 8RF, UK. b.carter1@which.net
Berry
J L
JL
Gunter
E
E
Jones
G
G
Jones
J C
JC
Makin
H L J
HL
Sufi
S
S
Wheeler
M J
MJ
D001681:Biological Assay; D019963:Clinical Chemistry Tests; D019411:Clinical Laboratory Techniques / Q000592:standards; D003199:Computer Systems; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods / Q000592:standards*; D006801:Humans; D007753:Laboratories / Q000592:standards; D015203:Reproducibility of Results; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood
D014807:Vitamin D; C104450:25-hydroxyvitamin D