When preparing cryoprecipitate from plasma, the cryoprecipitate must be refrozen within?
CORRECT ANSWER - 1 hour
Donated blood may not be used for allogeneic transfusion when HCV testing shows?
CORRECT ANSWER - EIA initial testing reactive, and one of the duplicate repeat results is reactive
The following hepatitis B testing results indicates: HBsAg: Nonreactive, Anti-HBc: Reactive, Anti-HBs:
Reactive, RNA HBV: nonreactive.
CORRECT ANSWER - Recurring infection (CDC says immune due to natural infection)
The antigen that occurs in approximately 20% of individuals of African ethnicity is?
CORRECT ANSWER - Js a
The Diego blood group is of anthropological interest because?
CORRECT ANSWER - Di a is more frequent in individuals of Mongolian ancestry
, Which antigen is a CR1?
CORRECT ANSWER - McC c
MHC Class II are found on?
CORRECT ANSWER - Dendritic Cells. Antigen-presenting cells such as dendritic cells, mononuclear
phagocytes, some endothelial cells, thymic epithelial cells, and B cells.
The Fc receptor on phagocytes that has the highest affinity for binding IgG is?
CORRECT ANSWER - FcR1
The hospital blood banks that collect blood but do not ship across state lines must be
CORRECT ANSWER - Registered with the FDA
The best education objective for a course to teach simple repair of instruments is
CORRECT ANSWER - Repair 9 of 10 machine malfunctions
You are the supervisor in a transfusion service. One of your employees had just finished compatibility
testing and was preparing to take a break. This employee never washed his hands before leaving the lab
or after removing his gloves. You should
CORRECT ANSWER - Plan an in-service for all employees concerning proper procedure for Universal
Precautions.