Table. 7.

Number (%) of participants in the proficiency tests for Duffy antigen typing

Trial (specimen) Category Antigen Duffy type

Fy(a) Fy(b)
1st (BGS-21-02) No. of participants 24 25 Fy(a+b–) 24 (100.0)
Negative 25 (100)
Trace
1+ 1 (4.2)
2+ 8 (33.3)
3+ 13 (54.2)
4+ 2 (8.3)
2nd (BGS-21-05) No. of participants 23 25 Fy(a+b–) 23 (95.8)
Negative 25 (100.0) Fy(a–b–) 1 (4.2)
Trace
1+
2+ 10 (43.5)
3+ 13 (56.5)
4+
Lab Med Qual Assur 2022;44:10~20 https://doi.org/10.15263/jlmqa.2022.44.1.10
© Lab Med Qual Assur