| Code Value | Definition |
|---|---|
| AB_NEGATIVE | AB NEGATIVE |
| AB_POSITIVE | AB POSITIVE |
| AB_UNKNOWN | AB UNKNOWN |
| A_NEGATIVE | A NEGATIVE |
| A_POSITIVE | A POSITIVE |
| A_UNKNOWN | A UNKNOWN |
| B_NEGATIVE | B NEGATIVE |
| B_POSITIVE | B POSITIVE |
| B_UNKNOWN | B UNKNOWN |
| O_NEGATIVE | O NEGATIVE |
| O_POSITIVE | O POSITIVE |
| O_UNKNOWN | O UNKNOWN |
| UNKNOWN | UNKNOWN |