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Leukopheresis may be indicated when the white blood cell count exceeds ________.

All of the following biochemical changes are associated with loss of red cell viability upon storage except:

Where is the Rh antigen located relative to the red cell membrane?

Which antigen represents Rh3 in Rosenfield terminology?

All of the following may result in weak or missing antigens except:

What is the purpose of treating serum containing cold autoantibodies with dithiothreitol (DTT) or 2-mercaptoethanol (2-ME)?

Reverse grouping was performed on an AB person. The technologist observed a very weak agglutination macroscopically. The cells appeared as “stacked coins” under a microscope. Which reagent should be added to the tube and recentrifuged in an attempt to resolve the discrepancy?

If not labeled “gamma heavy chain specific,” monospecific anti-IgG may contain antibodies to:

Secretor studies were performed on a person who expressed weak reactions in forward grouping. Only B and H substance were present in saliva. What is this person’s ABO group?

A patient came in for a routine type and screen prior to surgery. The antibody screen was negative at 37°C and AHG phase. Check cells did not produce agglutination often. What is a possible explanation for this result?