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The page below is a sample from the LabCE course ABO Typing Discrepancies. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Case Study 1
An 83-year-old female is undergoing pre-op testing which includes a type and screen with a 2-unit Red Cell crossmatch. One 7mL EDTA tube was collected, labeled with her full name, date of birth, medical record number, collection date and time, and the collector's initials. The sample was acceptable per the blood bank's Specimen Acceptability procedure. The sample was processed and tested on the bench with the traditional tube method. Results are as follows. Review the reactions (shown in the images on the right and listed in the table) and consider how to respond to each item listed below. Then click on the item for interpretation and case resolution.

Anti-A Anti-B A1 cells
B cells
Patient Results
0 0 00