Umemoto M
Chemicals Inspection and Testing Institute, Tokyo, Japan.
Scand J Clin Lab Invest Suppl. 1996;224:141-3. doi: 10.3109/00365519609088633.
A serum based reference material for Ca2+ measurement has been established in Japan. cCa2+ in the reference material was assigned with a IFCC reference cell. Some improvements of the IFCC reference cell are described. A few non-Japanese Ca2+ analyzers have given very inaccurate results with the reference material. The Japanese authorities can therefore be expected to hamper their importation in the future. A world-wide external quality assessment scheme with the Japanese reference material is suggested to further identify and solve the problems.
日本已建立了一种用于钙（Ca2+）测量的血清基参考物质。该参考物质中的校正钙（cCa2+）是通过国际临床化学和检验医学联合会（IFCC）参考电池赋值的。文中描述了对IFCC参考电池的一些改进。一些非日本产的钙分析仪使用该参考物质时给出了非常不准确的结果。因此，可以预计日本当局未来会阻碍这些仪器的进口。建议采用该日本参考物质开展一项全球范围的外部质量评估计划，以进一步识别和解决相关问题。
