Rippey J H
Am J Clin Pathol. 1980 Oct;74(4 Suppl):589-90.
The participant performances on 1979 rheumatoid factor test survey specimens are tabulated. All reagents performed well on the qualitative positive and negative specimens. Prominent differences in results occurred with the weakly positive specimen. Some reagents consistently gave higher titers on the positive specimen, indicating the need for reference standards.
列出了参与者在1979年类风湿因子测试调查样本上的表现。所有试剂在定性阳性和阴性样本上表现良好。弱阳性样本的结果出现了显著差异。一些试剂在阳性样本上始终给出更高的滴度，这表明需要参考标准。
