2016 ACVIM Forum Research Abstract Program

Urine samples submitted to the Auburn University Clinical Pathology Laboratory for urinalysis and that were naturally glucosuric (n = 39) were included. Multistix (Bayer) were used according to manufacturer instructions and were read visually by a single trained investigator ("visual reading") and by the CLINITEK 50 analyzer (Bayer; "automated reading"). Urine glucose and urine creatinine concentrations were measured using a Hitachi 911 Chemistry Analyzer (Boehringer Mannheim Corp.); the glucose measurements were considered to be the true concentration (gold standard). Spearman's rank order correlation was used to evaluate the relationship between: 1. glucose concentration and automated readings; 2. glucose concentration and visual reading; 3. automated and visual readings; 4. automated readings and UGCR; and 5. visual readings and UGCR. Significance was set at P < 0.05. Correlation was classified as excellent for r = 0.93-0.99, good for r = 0.8-0.92, fair for r = 0.59-0.79 and poor for r < 0.59. Reference intervals that correlated with the colors on the test strip were devised based on the package insert (trace=76-175 mg/dL; 1 + = 176-375 mg/dL; 2 + = 376-750 mg/dL; 3 + = 751-1500 mg/dL; 4 + = >1500 mg/dL).