title: Underestimation of serum 25-hydroxyvitamin D by the Nichols Advantage Assay in patients receiving vitamin D replacement therapy.
authors.forename: Pamela
authors.initials: P
authors.lastname: Leventis
authors.forename: Lisa
authors.initials: L
authors.lastname: Garrison
authors.forename: Margaret
authors.initials: M
authors.lastname: Sibley
authors.forename: Pamela
authors.initials: P
authors.lastname: Peterson
authors.forename: Martyn
authors.initials: M
authors.lastname: Egerton
authors.forename: Gerald
authors.initials: G
authors.lastname: Levin
authors.forename: Patrick
authors.initials: P
authors.lastname: Kiely
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004872:Ergocalciferols / Q000627:therapeutic use*; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008875:Middle Aged; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000188:drug therapy*
chemical_list: D004872:Ergocalciferols; D014807:Vitamin D; C104450:25-hydroxyvitamin D