Laboratory Medicine and Quality Assurance

Table. 6.

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

Trial (specimen) BGS-20-03 BGS-20-06


Anti-D (Rh typing) Ani-D (weak D test) Anti-D (Rh typing) Ani-D (weak D test)
No. 247 249 248 251
Negative 236 (95.5) 3 (1.2) 243 (98.0) 1 (0.4)
± 5 (2.0) 1 (0.4) 3 (1.2) 1 (0.4)
1+ 4 (1.6) 24 (9.6) 2 (0.8) 19 (7.6)
2+ 1 (0.4) 66 (26.5) - 62 (24.7)
3+ - 87 (34.9) - 106 (42.2)
4+ 1 (0.4) 68 (27.3) - 62 (24.7)
NT - - - -
D positive 16 (6.4)* 1 (0.4)*
D variant 232 (92.8) 248 (98.4)
D negative 2 (0.8)* 3 (1.2)*

Abbreviation: NT, not tested.

*Unacceptable responses for weak D testing.

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