Journal of Laboratory Medicine and Quality Assurance

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Table. 4.

Table. 4.

Number (%) of participants in the proficiency testing for ABO subtyping in 2018

Trial (specimen)CategoryAnti-seraABO subgroup

Anti-AAnti-BAnti-A1Anti-H
1st (BGS-18-01)Number52525249A2B2 (3.8)*
Negative--52 (100.0)1 (2.0)A2Bw49 (94.2)
±-1 (1.9)*--AwBw1 (1.9)*
1+-5 (9.6)-2 (4.1)--
2+-22 (42.3)-4 (8.1)--
3+3 (5.8)10 (19.2)-21 (42.9)--
4+49 (94.2)--21 (42.9)--
MF-14 (26.9)----
2nd (BGS-18-04)Number54545452A12 (3.7)*
Negative-2 (3.7)1 (1.9)2 (3.8)A1Bw51 (94.4)
±-4 (7.4)-2 (3.8)A2Bw1 (1.9)*
1+-25 (46.3)1 (1.9)22 (42.3)--
2+-5 (9.3)2 (3.7)24 (46.2)--
3+--3 (5.7)2 (3.8)--
4+54 (100.0)-47 (88.7)---
MF-18 (33.3)----

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

Abbreviation: MF, mixed field agglutination.

Unacceptable responses for ABO subgrouping.

J Lab Med Qual Assur 2019;41:65-74 https://doi.org/10.15263/jlmqa.2019.41.2.65
© 2019 J Lab Med Qual Assur