What is the purpose of using a 'type and screen' protocol in pre-transfusion testing?

A To determine the patient's blood type and detect any unexpected antibodies ✓
B To identify the patient's blood type and select compatible units
C To detect any antibodies against blood group antigens
D To select compatible units based on the patient's medical history

Explanation

The 'type and screen' protocol is used to determine the patient's blood type (ABO and Rh) and detect any unexpected antibodies that may be present, which helps to select compatible blood units and prevent adverse reactions.

Source

College of American Pathologists
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high