Standardization ..................................................................................................................... 20. Efficiency Defined and Measured in the Operating Room...........................................................
There are four major blood types: A, B, AB, and 0. The blood types are determined by proteins called antigens (also called agglutinogens) on the surface of the RBC. There are two antigens, A and B. If you have the A antigen on the RBC, then you have type A blood. When B antigen is present, you have type B blood. When both A and B antigens are present, you have type AB blood. When neither are present, you have type O blood.
WHAT IS A BLOOD TEST? Blood Test, sometimes referred to as Blood work, is defined as: A procedure in which a sample of your Blood is drawn and, under controlled conditions, is analyzed in a laboratory for evidence of infection, disease or abnormality.