Number (%) of participating laboratories in the proficiency tests for ABO blood grouping in 2020
| Trial | Specimen | Total | A | B | AB | O | Discrepancy | Intended response |
|---|---|---|---|---|---|---|---|---|
| 1st | BB-20-01 | 890 (100.0) | 0 | 887 (99.7) | 0 | 0 | 3 (0.3) | B |
| BB-20-02 | 890 (100.0) | 0 | 0 | 0 | 888 (99.8) | 2 (0.2) | O | |
| BB-20-03 | 890 (100.0) | 888 (99.8) | 0 | 0 | 0 | 2 (0.2) | A | |
| 2nd | BB-20-07 | 897 (100.0) | 1 (0.1) | 0 | 896 (99.9) | 0 | 0 | AB |
| BB-20-08 | 897 (100.0) | 0 | 0 | 0 | 895 (99.8) | 2 (0.2) | O | |
| BB-20-09 | 897 (100.0) | 1 (0.1) | 893 (99.6) | 0 | 0 | 3 (0.3) | B |