Table. 4.

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

Trial (specimen)CategoryAnti-seraABO subgroup

Anti-AAnti-BAnti-A1Anti-H
1st (BGS-17-01)Number50505039A11 (2.0)*
Negative-50 (100.0)46 (92.0)-A248 (96.0)
±--2 (4.0)4 (10.3)*Aw1 (2.0)*
1+---13 (33.3)
2+1 (2.0)*-1 (2.0)*16 (41.0)
3+2 (4.0)--6 (15.4)
4+47 (94.0)---
MF--1 (2.0)*-
2nd (BGS-17-04)Number52525248A2B7 (13.5)*
Negative--52 (100.0)-A2Bw42 (80.7)
±-2 (3.8)-1 (2.1)*AwB2 (3.9)*
1+-4 (7.7)-6 (12.5)AwBw1 (1.9)*
2+-13 (25.0)-18 (37.5)
3+2 (3.8)12 (23.1)-12 (25.0)
4+50 (96.2)4 (7.7)*-11 (22.9)
MF-17 (32.7)--

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

Abbreviation: MF, mixed field agglutination

Unacceptable responses for ABO subgrouping

J Lab Med Qual Assur 2018;40:9~20 https://doi.org/10.15263/jlmqa.2018.40.1.9
© Lab Med Qual Assur