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Annual Report on the External Quality Assessment Scheme for Urinalysis and Faecal Occult Blood Testing in Korea (2016)
J Lab Med Qual Assur 2017;39:117-123
Published online September 30, 2017
© 2017 Korean Association of External Quality Assessment Service.

Chang-Ho Jeon, A-Jin Lee, Sang-Gyung Kim, Hun-Seok Suh, and Young-Cheol Bae

Department of Laboratory Medicine, Daegu Catholic University School of Medicine, Daegu, Korea
Correspondence to: Chang-Ho Jeon
Department of Laboratory Medicine, Daegu Catholic University Medical Center, 33 Duryugongwon-ro 17-gil, Namgu, Daegu 42472, Korea
Tel: +82-53-650-4144 Fax: +82-53-653-8672 E-mail: chjeon@cu.ac.kr
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 Abstract
In 2016, external quality assessment trials for urinalysis and faecal occult blood (FOB) were performed with 1,487 participants in Korea. Urine chemistry and FOB tests were performed three and two times, respectively, whereas urine sediment was evaluated once using photography. Urine chemistry tests consisted of pH, protein, glucose, ketone, bilirubin, blood, urobilinogen, and nitrite levels; leukocyte count; specific gravity. The results of the urine chemistry and specific gravity tests showed accuracy rates of 95%. The accuracy rate of urine sediments was low, especially that for transitional epithelial cells and atypical crystals. In the FOB quality test, all reagents showed accuracy rates of 90%, which suggested the improvement of false-positive reaction. In the FOB quantitative test, discrepant results depending on the instrument used was observed. To compensate for the result differences caused by the stool samples, the results should be reported using another unit (µg/g of stool).
Keywords : Quality assessment, Urinalysis, Occult blood
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