Blood Bank ASCP || MOST RECENT EXAM ACTUAL COMPLETE REAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+ | GUARANTEED SUCCESS!! | NEWEST EXAM | JUST RELEASED!!

Blood Bank ASCP 2026 -2027|| MOST RECENT EXAM ACTUAL
COMPLETE REAL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED A+ |
GUARANTEED SUCCESS!! | NEWEST EXAM | JUST
RELEASED!!




ANSWERS: ABO


We just stated that IgM antibodies are usually NOT clinically significant.
There is a notable exception to this statement! What is it?
___ antibodies are VERY CLINICALLY SIGNIFICANT. Most transfusion fatalities are
the
result of an ABO incompatibility

ANSWERS: ABO, Ii, Lewis, MN, & P


IgM Antibodies


ANSWERS: Rh, Kell, Kidd, Duffy, and Ss


IgG Antibodies


ANSWERS: IgM


___ is initially the predominant antibody produced that attaches to and fights the
foreign
agent

,ANSWERS: Antibody coating RBC without Agglutination


In vitro Indicators of Antigen/Antibody Reactions:
Sensitization: Attachment of antibody to antigen that requires antihuman
globulin to detect.


ANSWERS: RBC Hemolysis


In vitro Indicators of Antigen/Antibody
Reactions: Immune mediated lysis of red
blood cells.

ANSWERS: Agglutination


In vitro Indicators of Antigen/Antibody Reactions:
Antibody mediated clumping of red blood cells that express corresponding
antigens on their surface


ANSWERS: Antihuman globulin reagent (AHG)


Antibody Coating RBC Membrane without Agglutination:
Attachment of antibody to corresponding antigen on RBC membrane, ONLY.
This reaction is NOT SEEN at the Immediate Spin (IS), Room Temperature (RT), or
37oC (LISS) phases.
This reaction requires the use of an __________in the Direct (DAT) or Indirect
Antiglobulin Tests (IAT) to observe.


ANSWERS: Sensitization


Stage 1 of Agglutination
Attachment of antibody to
antigen

,ANSWERS: noncovlent


For sensitization to occur, a ___ chemical bond must form between antigen and
antibody


ANSWERS: exothermic hydrogen bonds


Factors Affecting Stage 1 of Agglutination:
Temperature:
Cold (4-10oC): Carbohydrate antigens tend to form__________ with the antibody-
combining site so the bond is stronger at lower temperatures


ANSWERS: Hydrophilic bonds


Factors Affecting Stage 1 of Agglutination:
Temperature:
Warm (37oC) _______ formed with protein antigens are endothermic, so these
bonds
are enhanced at higher reaction temperatures.

ANSWERS: Temperature, pH, Incubation Time, Low Ionic Strength Solution


Factors Affecting Stage 1 of Agglutination


ANSWERS: Lattice formation


formation of bridges between the sensitized red cells to form the lattice that
results in agglutination (visible clumping) of red blood cells.


ANSWERS: Size of the Immunoglobulin, Number of antibody binding sites,
Location and Number of Antigenic Determinants, Centrifugation, Zeta Potential,
Waters of Hydration

, Factors Affecting Stage 2 of Agglutination




ANSWERS: Waters of Hydration


Water molecules tightly bound to hydrophilic macromolecules on the red cell
surface effectively keep red cells apart thus inhibiting lattice formation.


ANSWERS: POSITIVE REACTION


If the supernatant is clear and red Hemolysis is indicated. THIS IS A__ , and
indicates a nasty antibody!


ANSWERS: Rouleaux


_______
Increased proteins can cause RBCs to clump and stack - false positive




ANSWERS: Mixed Field Agglutination


________ ________ ______
Presence of two cell populations: such as Group O cells in a Group A patient.