IQ200尿沉渣分析仪检测尿有形成分结果误判分析及对策

Analysis and Countermeasures of False Determination of the Results in Urine Particles with IQ200 Automated Urinalysis Analyzer

目的:分析IQ200尿沉渣分析仪检测尿有形成分的影响因素,寻找导致其结果误判的原因及解决对策。方法:分别采用IQ200尿沉渣分析仪和尿沉渣镜检对2319例临床尿液标本进行检测,对比2种方法的检测结果,分析引起IQ200尿沉渣分析仪结果误判的原因。结果:IQ200尿沉渣分析仪检测红细胞误判率为14.7%,一定量的结晶、细菌和酵母样菌易被仪器错误报告为红细胞;白细胞的误判率为15.75%,小圆上皮细胞、大量细菌和非晶形结晶是引起白细胞误判的主要原因;管型误判率为38.58%,黏液丝是引起其误判的最主要原因。结论:因多种因素可以影响IQ200尿沉渣分析仪对尿液有形成分的检测结果,出现结果误判,因此应用IQ200尿沉渣分析仪检测尿液有形成分只能作为一种初步筛查方法,当尿液病理成分检测结果提示增多,同时上述干扰成分亦呈阳性或增多时,尿沉渣镜检十分重要。

Objective To discuss the factors that affect the examination of urine formed elements by IQ200 automated urinalysis analyzer causing false positive and look for the solution methods, Methods 2,319 urine samples were tested by IQ200 automated urinalysis analyzer and microscopy. The results were contrasted and the false positive reasons were ana- lyzed, llatnllta When using IQ200 automated urinalysis analyzer, the false positive rate of red cell is 14.7%. Crystals, bacteria, yeast like fungus sometimes are regarded as red cell by analyzer. The false positive rate of white cell is 15.75%. Small round cells, lots of bacterium can cause false positive; the false positive rate of cast is 38.58 % and viscose rayon is main agent. Conclusion Many factors can affect the examination in IQ200 automated urinalysis analyzer and cause false positive, so IQ200 can only be used for scanning, which is very important to observe sediments by microscopic examination when pathologic ingredients in urine are increased and at the same time all above interferences are positive and manifold.