Comparison of two Automated Urine Analysers (UriScan Super+ YD
Diagnostics and Sysmex UC-3500 -UF 5000 Urine Chemistry Analyzer) with
Routine microscopy
Abstract
Background: Urinalysis is one of the most commonly performed
screening tests in the Clinical laboratory to diagnose and monitor
various urological and systemic conditions. Newly developed automated
urine analyzers are expected to routinely screen urine to reduce TAT and
provide clinicians with prompt clinical information with a lower
false-negative rate. The study aimed to evaluate the diagnostic
performance of the two Automated Urine analyzers and compare them with
microscopy. Method: There were 124 randomly selected samples of
patients coming to the clinical pathology laboratory were taken for each
Automated analyzer and microscopic evaluation. The results of various
cells, formed elements and microorganisms were compared between both the
automated urine analyzers and microscopy and the degree of concordance
was calculated for each parameter. Results: The degree of
concordance of RBC, WBC and epithelial cells was good between the two
automated analyzers; URiSCAN Super+ YD Diagnostics and Sysmex
UC-3500 -UF 5000 Urine Analyzer and microscopy with p <0.001.
The concordance between the Sysmex UC-3500 - UF 5000 Urine Analyzer and
manual microscopy was better than between manual microscopy and Uriscan
Super + YD Diagnostics. There was no concordance between all
these methods for either crystals, cast, bacteria and fungi with p
>0.05 Conclusion: The results from the automated
analyzers for RBCs, WBCs and epithelial cells were similar to the result
of manual microscopy and the analyzers can be relied upon. However,
bacteria, fungi, dysmorphic red cells, casts and crystals need to be
analyzed by microscopic examination before giving a final diagnosis.