title: Evaluation of the reliability and repeatability of automated milk urea nitrogen testing.
abstract: The purpose of this study was to evaluate the reliability (precision and accuracy), and repeatability of an infrared method of determining milk urea nitrogen. The reference method used for the reliability assessment was a wet-chemistry, enzymatic determination of milk urea nitrogen. Reliability and repeatability, as measured by concordance correlation coefficients, were 0.97 and 0.99, respectively.
authors.affiliation: Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, Prince Edward Island C1A 4P3. parunvipas@upei.ca
authors.forename: P
authors.initials: P
authors.lastname: Arunvipas
authors.forename: J A
authors.initials: JA
authors.lastname: VanLeeuwen
authors.forename: I R
authors.initials: IR
authors.lastname: Dohoo
authors.forename: G P
authors.initials: GP
authors.lastname: Keefe
mesh_terms: D000818:Animals; D001322:Autoanalysis / Q000662:veterinary; D003612:Dairying / Q000379:methods; D008892:Milk / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013055:Spectrophotometry, Infrared / Q000379:methods / Q000662:veterinary*; D014508:Urea / Q000032:analysis*
chemical_list: D014508:Urea