Laboratory Medicine and Quality Assurance

Table. 6.

Number (%) of participants in proficiency tests for the weak D test

Trial (specimen) BGS-19-03 BGS-19-06
Anti-D (Rh typing) Ani-D (weak D test) Anti-D (Rh typing) Ani-D (weak D test)
No. of participants 230 232 231 233
Negative 68 (29.6) 1 (0.4) 104 (45.0) 5 (2.1)
± 44 (19.1) 1 (0.4) 50 (21.6) 3 (1.3)
1+ 88 (38.3) 36 (15.5) 47 (20.3) 36 (15.5)
2+ 25 (10.9) 82 (35.3) 26 (11.3) 56 (24.0)
3+ 5 (2.2) 71 (30.6) 3 (1.3) 99 (42.5)
4+ 19 (8.2) 1 (0.4) 26 (11.2)
NT 22 (9.5) 8 (3.4)
D positive 56 (24.0)* 25 (10.7)*
D variant 177 (76.0) 203 (87.1)
D negative 5 (2.1)*

Values are presented as number (%).

Abbreviation: NT, not tested.

*Unacceptable responses for weak D testing.

Lab Med Qual Assur 2020;42:112~120 https://doi.org/10.15263/jlmqa.2020.42.3.112
© Lab Med Qual Assur