检验医学 ›› 2013, Vol. 28 ›› Issue (1): 33-36.DOI: 10.3969/j.issn.1673-8640.2013.01.008

• 临床应用研究.论著 • 上一篇    下一篇

慢性肾功能不全患者一天内不同时间点尿总蛋白/肌酐比值的变化情况分析

胡尧1,蒋国英2,吕元3,刘瑞来1,刘春芳1   

  1. 1. 复旦大学附属华山医院检验科,上海 200040;2. 辽河油田第二医院,辽宁 盘锦 124120
  • 收稿日期:2012-03-09 修回日期:2012-04-24 出版日期:2013-01-30 发布日期:2013-01-10
  • 通讯作者: 刘春芳,联系电话:021-52888323。
  • 作者简介:胡尧,男,1982年生,学士,技师,主要从事临床生化免疫学检验及相关研究。
  • 基金资助:

    “国家临床重点专科”项目资助

Changes of random urine total protein-to-creatinine ratio among chronic renal failure patients in 1 d

  1. 1. Department of Clinical Laboratory,Huashan Hospital,Fudan University,Shanghai 200040,China;2.The Second Hospital of Liaohe Oilfield,Liaoning Panjin 124120,China
  • Received:2012-03-09 Revised:2012-04-24 Online:2013-01-30 Published:2013-01-10

摘要: 目的 研究随机尿总蛋白(TP)/肌酐(Cr)比值在1 d中不同时间点的变化情况。 方法 选择临床建议做24 h尿蛋白检测慢性肾功能不全患者28例,所有患者随机尿内生肌酐清除率(Ccr)均>10 mL/min。在常规收集24 h尿样本时,分段收集随机尿样本(取出1.5 mL,其余倒入24 h尿定量收集的容器内)。检测每份样本的24 h尿及随机尿TP和Cr,并计算出TP/Cr比值。取高、中、低3个浓度的24 h蛋白尿样本各1份重复检测,获得该方法的室内误差值,即批间变异系数(CV)。 结果 TP、TP/Cr比值高值、中值和低值的CV均<5%,在临床可接受范围内。28例患者中有11例(40%)患者1 d内随机尿TP/Cr比值波动幅度很小,与24 h TP/Cr比值很接近(P>0.05)。此类患者可用随机尿TP/Cr比值来推测24 h尿蛋白量。另有17例(60%)患者1 d内随机尿TP/Cr比值波动幅度很大,随机尿TP/Cr比值波动与24 h尿TP/Cr比值的实验误差(按临床最大可接受范围计算)引起的波动之间存在明显差异(P<0.05);而且一些患者的随机尿TP/Cr比值会出现极端变化,差异甚至可高达30倍。对这60%的患者用任意一次随机尿TP/Cr比值来推测24 h尿蛋白量很难得到正确结果,即该类患者的随机尿TP/Cr比值不能用于代替24 h尿蛋白检测。部分患者即使24 h尿蛋白水平已明显异常,而多次随机尿中UP及TP/Cr比值却在正常范围内,出现假阴性结果。 结论 大多数患者1 d中随机尿TP/Cr比值的变化较大,建议在有条件的情况下最好采用24 h尿TP评估肾脏蛋白漏出。

关键词: 总蛋白/肌酐比值, 尿液, 24 h尿, 随机尿

Abstract: Objective To research the changes of random urine total protein(TP)-to-creatinine(Cr)ratio in 1 d.   Methods After being determined for 24 h urine protein,a total of 28 patients with renal inadequacy were enrolled. The endogenous creatinine clearance rate(Ccr)was >10mL/min. When collecting 24 h urine,about 1.5mL urine was taken out at different point as random urine specimen,and the others were put into the 24 h urine specimen quantitation collections. The values of TP,Cr and TP/Cr ratio in random and 24 h urine specimens were detected and calculated. The 24 h urine specimens with high,middle and low protein concentrations were used to analyze laboratory error [between-run coefficient of variation(CV)]. Results The CV of TP and TP/Cr ratio with high,middle and low protein concentrations were < 5% in the clinical acceptable range. In 11 of 28(40%)patients,the differentiation between the random urine TP/Cr ratio and 24 h urine TP/Cr ratio wasn′t significant in statistics (P>0.05). The 24 h urine protein can be calculated by random urine TP/Cr ratio. After calculating the maximum clinical acceptable range,there were 17(60%)patients whose TP/Cr ratio having a significant differentiation between the random urine TP/Cr ratio and 24 h urine TP/Cr ratio in statistics (P<0.05). The patients whose TP/Cr ratio of random urine specimens in 1 d had a highly significant differentiation,evenly reached 30 folds. It was hard to get right amount of 24 h urine protein through predicting random urine TP/Cr ratio. The determination of 24 h urine protein can not be replaced by random urine TP/Cr ratio. To many patients,the urine protein and TP/Cr ratio in random urine specimens showed negative results in some points,although the results of 24 h urine protein were abnormal obviously. Conclusions These results show that random urine TP/Cr ratio in 1 d has significant changes for many patients. Therefore,24 h TP should be used as an alternative to analyze renal protein.

Key words: Total protein-to-creatinine ratio, Urine, 24 h urine, Random urine