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What is the relationship of potency and specificity to blood banking reagents? Answer:
Potency refers to the strength of the reaction, while specificity is the recognition of the
antigenic determinant and its corresponding antibody.
What are the four basic categories of blood banking reagents? Answer: 1. RBCs with
known antigens 2. Antisera with known antibodies 3. Antiglobulin reagents (anti-IgG
and/or complement) 4. Potentiators to enhance antibodies.
What are the differences between polyclonal and monoclonal antibodies? Answer:
Polyclonal antibodies are made from several different clones of B cells and recognize
multiple epitopes, while monoclonal antibodies are made from a single clone of B cells
and recognize a single epitope.
What is the purpose of reagent controls in blood banking? Answer: Reagent controls
are used to ensure the accuracy and reliability of test results.
What are the basic principles of antiglobulin testing? Answer: Antiglobulin testing is
used to detect antibodies against red blood cells and involves direct and indirect
methods.
What distinguishes direct antiglobulin tests (DAT) from indirect antiglobulin tests (IAT)?
Answer: DAT detects antibodies that are bound to the surface of red blood cells, while
IAT detects free antibodies in the serum.
What are some common sources of errors in antiglobulin testing? Answer: Errors can
arise from improper sample handling, reagent quality, and testing technique.
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, What are polyspecific and monospecific antiglobulin reagents? Answer: Polyspecific
antiglobulin reagents react with multiple immunoglobulin classes, while monospecific
reagents react with a single immunoglobulin class.
What role do potentiators play in immunohematologic testing? Answer: Potentiators
enhance the interaction between antibodies and antigens, improving the sensitivity of
tests.
What are some examples of potentiators used in immunohematologic testing? Answer:
Low-ionic-strength solution, bovine serum albumin, polyethylene glycol, and proteolytic
enzymes.
What are common lectins used in blood banking? Answer: Lectins are plant-derived
proteins that can agglutinate red blood cells and are used for blood typing.
What are the principles of gel technology in blood banking? Answer: Gel technology
involves the use of gel matrices to separate and detect agglutination reactions in blood
typing.
What is the significance of the FDA in regulating blood banking reagents? Answer: The
FDA licenses commercial blood banking reagents to ensure they meet minimum
standards for safety and efficacy.
What is Quality Control (QC) in blood banking? Answer: QC is the testing to determine
the accuracy and precision of equipment, reagents, and procedures.
What is the composition of polyclonal antibodies? Answer: Polyclonal antibodies
consist of a mixture of antibodies that recognize different epitopes of the same antigen.
What is the composition of monoclonal antibodies? Answer: Monoclonal antibodies
consist of a single type of antibody that recognizes a specific epitope.
What reagents are used for ABO typing? Answer: Anti-A and anti-B reagents are used
to determine the ABO blood type.
What is the reaction of anti-A and anti-B reagents with patient RBCs? Answer: Anti-A
reacts with A antigen and anti-B reacts with B antigen on the patient's RBCs.
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