EXAM PRACTICAL ANSWERS 2026 UPDATED
EXAM PREP QUESTIONS AND ANSWERS
◉ B lymphocytes. Answer: cells that mature in the bone marrow,
differentiates into plasma cells which produce antibodies
◉ Monocyte. Answer: leukocytes that are involved in phagocytosis
and antigen presentation
◉ Stem cell. Answer: cell from which differentiated blood cells of all
types originate
◉ Plasma cell. Answer: an antigen stimulated B lymphocyte which
function to produce antibodies
◉ T lymphocyte. Answer: cell that matures in the thymus and are
involved in cellular immunity.
◉ AABB. Answer: Which agency is voluntary but has served as the
principal guidelines for blood bank and transfusion services since
1958? It is recognized for its high standards for blood banks.
,◉ Standard operating procedures. Answer: Written procedures to
ensure the complete understanding of a process and to achieve
consistency in performance from one individual to another
◉ False. Answer: Quality is only the responsibility of the supervisors
in the laboratory.
True
False
◉ Agglutination. Answer: Clumping together of RBCs following
antigen antibody sensitization and lattice formation
◉ Zone of Equivalence. Answer: Optimum ratios of antibody (serum)
to antigen (RBC suspension) for maximum agglutination
◉ Postzone. Answer: excess antigen causing false negative reaction
◉ Lattice Formation. Answer: cross linkage of antibody bound
antigen resulting in agglutination
◉ Sensitization. Answer: Binding of antibody or complement to the
red blood cell membrane
, ◉ Hemolysis. Answer: A visual sign of antigen antibody reaction
resulting from complement activation and red cell destruction
◉ Prozone. Answer: excess antibody causing false negative reaction
◉ Quality Assurance. Answer: A comprehensive documentation
practices program monitoring the entire testing process.
◉ Quality Control. Answer: Monitors the test system's components,
such as reagents and instrumentation.
◉ cross off with a single line the item that is incorrect and write the
correct data or information next to it, followed by the date and
initials of the person making the correction.. Answer: When making
a manual correction to a blood bank record:
◉ IgG. Answer: This antibody reacts mostly at 37 degree Celsius, is a
monomer, can cause hemolytic reactions and can cross the placenta.
◉ CMS. Answer: The federal agency that regulates all laboratory
testing including CLIA certification: