Fig. 1. Images of urine sediments for external quality assessment. (A) CUI-19-01 transitional epithelial cells (original magnification×400). (B) CUI-19-02 contrast media (original magnification×200). (C) CUI-19-03 ammonium magnesium phosphate (original magnification×400). (D) CUI-19-04 white blood cell cast (original magnification×400).

J Lab Med Qual Assur 2020;42:157~165 https://doi.org/10.15263/jlmqa.2020.42.4.157

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