Challand G S, Cox L
Ann Clin Biochem. 1978 Mar;15(2):117-20. doi: 10.1177/000456327801500126.
A simultaneous deterioration in performance of several radioimmunoassays suggested that equipment was malfunctioning. Replicate counts from an automated gamma counter showed unacceptable variation during a 24-hour period; this variation was detected using Trigg's technique, a sensitive method for trend analysis, and was not identified by the usual laboratory testing procedures. A defective capacitor was found in the voltage stabilisation unit in the gamma counter, which probably made it responsive to small variations in the power supply to the laboratory. It is suggested that the analysis of replicate counts using Trigg's technique is a valuable test of gamma counter function which should become routine.
几种放射免疫分析的性能同时变差，这表明设备出现了故障。自动γ计数器的重复计数在24小时内显示出不可接受的变化；这种变化是使用特里格技术检测到的，这是一种用于趋势分析的灵敏方法，而常规实验室检测程序并未识别出这种变化。在γ计数器的稳压装置中发现了一个有缺陷的电容器，这可能使其对实验室电源的微小变化产生反应。建议使用特里格技术对重复计数进行分析是对γ计数器功能的一项有价值的测试，应成为常规操作。
