ABO Typing Discrepancies
As a general rule, the discrepant reaction in a typing result will be weaker than the other reactions. Thus, in the result below, the weaker reaction between the patient’s plasma and the type A typing cells can be considered the discrepancy in what otherwise looks like a type A result.
![Table 1](assets/images/ABO_TypingTable_1.png)
Common reasons for ABO typing discrepancies are shown in the table below. Discrepancies are more common in reverse typing than forward typing.
![Table 2](assets/images/ABO_TypingTable_2.png)
Next page: Resolving ABO discrepancies