KMID : 0981820080280040267
|
|
Korean Journal of Laboratory Medicine 2008 Volume.28 No. 4 p.267 ~ p.273
|
|
Evaluation of iQ200 Automated Urine Microscopy Analyzer
|
|
Park Ju-Won
Kim Jong-Wan
|
|
Abstract
|
|
|
Background:Microscopic examination of urine sediment is one of the most commonly performed tests in the clinical laboratory. However, manual microscopic sediment examination is labor-intensive, time-consuming and imprecise. In this study, we evaluated the analytical performance and clinical usefulness of a recently introduced image-based automated urinalysis system, Iris iQ200 (Iris Diagnostics, USA)
Methods:We assessed the iQ200 for linearity, precision and carryover rate using patient¡¯s samples and quality control materials. On 337 urine samples, urine sediment analyses performed by the iQ200 were compared with manual microscopy results.
Results:The iQ200 showed a good linearity (r2>0.99) for all cellular components analyzed. Within-run and total CVs on urine specimens and quality control samples were less than 10% except for within-run CV for the samples with low concentration of the squamous epithelial cells. The carryover rates were 0.21% for RBCs and 1.92% for WBCs. The agreement rates within one grade between the iQ200 and manual microscopy for RBCs, WBCs, and squamous epithelial cells were 93.8%, 94.2% and 96.9%, respectively.
Conclusion:Since the iQ200 showed a reliable analytical performance and good concordance with manual microscopy, it could be useful in the clinical practice as a screening procedure.
|
|
KEYWORD
|
|
iQ200, Automated urinalysis, Urine sediment
|
|
FullTexts / Linksout information
|
|
|
|
Listed journal information
|
|
|
|