engleski

Comparison of erythrocyte and leukocyte findings obtained by urine dipstick and standard microscopic sediment urinalysis with different diagnoses in dogs

The aim of the study was comparison of estimated erythrocyte and leukocyte count obtained by dipstick test strip with actual numbers counted in urine sediment analysis in native urine samples of dogs. Analyses of 68 native urine samples were performed in the Clinic of internal medicine. Samples were analysed by urine dipstick and standard microscopic sediment analysis. Patients were analysed as a group, and patients with problem in urinary system (N = 25) were additionally evaluated as a group. The results of dipstick analysis regarding erythrocytes were in accordance in 75%, and for the number of leukocytes in 81%. Overestimated values of erythrocytes by the dipstick were present in 25% and leukocytes in 12% of patients. There were no underestimated values for erythrocytes, while 7% of patients had lower leukocytes values. In all patients, the sensitivity of urine dipstick test for erythrocytes was 100% and for leukocytes 94% while the specificity for erythrocytes was 72% and for leukocytes 91%. The number of erythrocytes on dipstick was in congruence in 64%, and leukocytes in 44% of patients with urinary disorders compared to sediment analysis. Overestimated values of erythrocytes on the urine dipstick were recorded in 36% and in leukocytes 28% of patients. Underestimated erythrocytes values were not observed, and an underestimated value of leukocytes was found in 28% of patients.In most patients, the results of urine dipstick test analysis were in agreement with sediment analysis. Large differences between methods were observed in leukocyte count in patients with urinary tract disease and complete urinalysis in those patients is required.

erythrocytes, leukocytes, dipstick, urinary sediment

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