Journal of Laboratory Medicine and Quality Assurance

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Table. 2.

Table. 2.

Proficiency testing results for rheumatoid factor from the College of American Pathologists

Year/roundRF-01 (IU/mL, %)RF-02 (IU/mL, %)RF-03 (IU/mL, %)RF-04 (IU/mL, %)RF-05 (IU/mL, %)
2016/first5 (1.9)5 (1.4)189 (99.9)193 (99.4)6 (2.4)
2016/second242 (99.4)134 (98.1)9 (8.5)10 (9.3)131 (97.7)
2017/first148 (99.3)2 (2.1)247 (99.7)96 (95.3)3 (2.1)
2017/second113 (99.3)2 (3.8)3 (3.7)210 (99.7)115 (98.8)
2018/first228 (99.6)196 (100.0)136 (98.4)3 (0.3)3 (0.7)

Values are presented as median (positive %), unless otherwise stated.

J Lab Med Qual Assur 2019;41:105-10 https://doi.org/10.15263/jlmqa.2019.41.2.105
© 2019 J Lab Med Qual Assur