Blood Banking Flashcards
6 cards from real Medical Technologist Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Blood Banking flashcards as text
A patient with blood type A negative can receive red blood cells from which donor types?
Answer: A– and O– only
In emergency or standard practice, Rh-negative patients should receive Rh-negative RBCs to prevent sensitization; type A– patients can receive A– and O– units.
The Coombs test (direct antiglobulin test) detects which of the following?
Answer: IgG or complement bound to red blood cells in vivo
The direct antiglobulin test (DAT) detects IgG or complement already coating the patient's RBCs in vivo, as in autoimmune hemolytic anemia.
Which blood product provides fibrinogen and factor VIII for treating hemorrhagic conditions?
Answer: Cryoprecipitate
Cryoprecipitate is enriched in fibrinogen, factor VIII, vWF, factor XIII, and fibronectin, making it ideal for fibrinogen replacement.
Universal donor red blood cells are of which blood type?
Answer: Type O negative
Type O negative RBCs lack A, B, and Rh antigens, making them safe to transfuse to any recipient in emergencies.
What is the storage temperature for packed red blood cells?
Answer: 1–6°C
Packed RBCs must be stored at 1–6°C in the blood bank refrigerator and have a shelf life of up to 42 days with additive solutions.
Which antibody is naturally occurring, IgM class, and causes immediate hemolysis in ABO-incompatible transfusions?
Answer: Anti-A and anti-B isohemagglutinins
ABO isohemagglutinins are IgM antibodies that fix complement and cause acute intravascular hemolysis in ABO-mismatched transfusions.