Laboratory Medicine and Quality Assurance

Table. 8.

Number (%) of participating laboratories in the proficiency tests for the direct antiglobulin test

Trial Antiglobulin Specimen No. of laboratories Negative Positive Intended response
1st Polyspecific BBG-20-04 283 (100.0) 3 (1.1) 280 (98.9) Positive
BBG-20-05 283 (100.0) 279 (98.6) 4 (1.4) Negative
BBG-20-06 283 (100.0) 275 (97.2) 8 (2.8) Negative
Anti-IgG BBG-20-04 71 (100.0) 0 71 (100.0) Positive
BBG-20-05 71 (100.0) 71 (100.0) 0 Negative
BBG-20-06 71 (100.0) 71 (100.0) 0 Negative
Anti-C3d BBG-20-04 70 (100.0) 69 (98.6) 1 (1.4) Negative
BBG-20-05 70 (100.0) 70 (100.0) 0 Negative
BBG-20-06 70 (100.0) 70 (100.0) 0 Negative
2nd Polyspecific BBG-20-10 286 (100.0) 3 (1.0) 283 (99.0) Positive
BBG-20-11 286 (100.0) 3 (1.0) 283 (99.0) Positive
BBG-20-12 286 (100.0) 285 (99.7) 1 (0.3) Negative
Anti-IgG BBG-20-10 71 (100.0) 8 (11.3) 63 (88.7) Positive
BBG-20-11 71 (100.0) 1 (1.4) 70 (98.6) Positive
BBG-20-12 71 (100.0) 71 (100.0) 0 Negative
Anti-C3d BBG-20-10 72 (100.0) 0 72 (100.0) Positive
BBG-20-11 72 (100.0) 70 (97.2) 2 (2.8) Negative
BBG-20-12 72 (100.0) 72 (100.0) 0 Negative

Abbreviation: Ig, immunoglobulin.

Lab Med Qual Assur 2021;43:167~175 https://doi.org/10.15263/jlmqa.2021.43.4.167
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