Yoo Y M, Tatsumi N, Kirihigashi K, Narita M, Tsuda I, Kawamoto T, Takubo T
Department of Clinical Pathology, Seoul National University, Korea.
Osaka City Med J. 1995 Dec;41(2):41-8.
When the efficiency of urine sediment analysis was studied: we found that: (1) In tests of repeatability, counts of red blood cells, white blood cells, and epithelial cells, but not of casts, showed high precision, even when they were conducted by relatively inexperienced technologists; (2) Correlation of counts of red blood cells, white blood cells, and epithelial cells was good for results obtained by an expert technologist and those obtained by relatively inexperienced technologists, but the correlation was low in the case of casts, perhaps because of their low incidence in urine sediment; (3) Hematuria and leukocyturia were often detected in specimens positive for occult blood, albumin, or both; (4) Most casts were hyaline, which are physiologic in nature. Pathologic casts such as granular casts, were found in specimens containing red and white blood cells; (5) Although urine sediment analysis was frequently requested by clinicians, most analyses showed negative results; (6) Microscopic sediment analysis requires considerable time, labor, and experience, and is more sensitive than tape tests. The results of our study indicate that there are advantages to the present method for analyzing urine sediment, but that its efficiency is doubtful.
在对尿沉渣分析的效率进行研究时，我们发现：（1）在重复性测试中，红细胞、白细胞和上皮细胞的计数显示出高精度，而管型计数则不然，即使是由经验相对不足的技术人员进行操作也是如此；（2）红细胞、白细胞和上皮细胞计数在经验丰富的技术人员与经验相对不足的技术人员所获结果之间具有良好的相关性，但管型计数的相关性较低，这可能是因为管型在尿沉渣中的发生率较低；（3）在潜血、白蛋白或两者均呈阳性的标本中，常检测到血尿和白细胞尿；（4）大多数管型为透明管型，其本质上是生理性的。在含有红细胞和白细胞的标本中发现了颗粒管型等病理性管型；（5）尽管临床医生经常要求进行尿沉渣分析，但大多数分析结果为阴性；（6）显微镜下尿沉渣分析需要大量时间、人力和经验，并且比试纸条检测更敏感。我们的研究结果表明，目前的尿沉渣分析方法有其优点，但效率存疑。
