Lohmann R C, Wood D E, Jacobs W I, Elliott M L
Laboratory Proficiency Testing Program, Toronto, Ontario, Canada.
Arch Pathol Lab Med. 1989 Sep;113(9):989-94.
The Laboratory Proficiency Testing Program has successfully operated mandatory proficiency testing for 13 years in Ontario, Canada, using committees of volunteer peers. This is an alternative to gubernatorial proficiency testing. Using white blood cell (WBC) count determinations as a focus, we present our results. Ninety-six percent of participants attained WBC count results within +/- 10% of an all-methods mean and 77% attained results within +/- 5%. Ninety-six percent displayed satisfactory precision. Details of the program, ie, testing material, computer analysis, reference results, and scope of committee action, are discussed. In 1975, clinical expectations for WBC count determinations greatly exceeded most laboratories' capabilities. By 1987, participants were able to produce reliable, clinically useful WBC count results. The paramount reason for this improvement is the transition from manual to automated counting methods resulting from the stimulus of proficiency testing and the concomitant education.
实验室能力验证计划在加拿大安大略省已通过志愿者同行委员会成功开展强制性能力验证工作达13年之久。这是政府能力验证的一种替代方式。以白细胞（WBC）计数测定为重点，我们展示了我们的结果。96%的参与者获得的白细胞计数结果在所有方法均值的±10%范围内，77%的参与者获得的结果在±5%范围内。96%的参与者显示出令人满意的精密度。讨论了该计划的详细内容，即测试材料、计算机分析、参考结果以及委员会行动范围。1975年，临床对白细胞计数测定的期望大大超出了大多数实验室的能力。到1987年，参与者能够得出可靠的、临床上有用的白细胞计数结果。这种改进的首要原因是在能力验证的推动以及随之而来的教育影响下，从手工计数方法向自动化计数方法的转变。
