Rebentisch G, Berg W
Central Laboratory, District Hospital of Cottbus, GDR.
Urol Int. 1989;44(5):298-302. doi: 10.1159/000281526.
For five samples of our 5th international ring test for the quality control of methods of urinary calculus analysis we received 46 results from 19 countries obtained by means of ten different methods. The mean standard of quality (SQ) for all participants with quantitative methods is 2.11. Most laboratories employed X-ray diffraction (n = 21; SQ = 2.09) for quantitative calculus analysis. The mean deviation (delta x) per component from the ideal composition is fortunately low--about 0.10 molar parts for all participants, 0.06 molar parts for X-ray and infrared spectroscopy technique together. From the aspect of accuracy, the physical methods of analysis, X-ray diffraction and IR spectrophotometry, are clearly superior to all other analytical techniques.
在我们第五次尿液结石分析方法质量控制国际环形测试的五个样本中，我们收到了来自19个国家采用十种不同方法得出的46个结果。采用定量方法的所有参与者的平均质量标准（SQ）为2.11。大多数实验室采用X射线衍射法（n = 21；SQ = 2.09）进行结石定量分析。幸运的是，各成分与理想成分的平均偏差（δx）较低——所有参与者约为0.10摩尔份，X射线和红外光谱技术合计为0.06摩尔份。从准确性方面来看，物理分析方法，即X射线衍射法和红外分光光度法，明显优于所有其他分析技术。
