MLS 413 - Final Exam 2025/2026 Exam
Questions and Answers 100%
1
Guaranteed Success | Already Rated A+
affinity (antigen-antibody binding) - 🧠 ANSWER ✔✔the initial force of attraction
that exists between Fab site on an antibody molecule and a single epitope on an
antigen
-strength of attraction depends on specificity of antibody for antigen (ex: cross
reacting antigens have lower affinity)
avidity (antigen-antibody binding) - 🧠 ANSWER ✔✔sum of attractive forces
between an antigen and antibody; the strength with which a multivalent antibody
binds a multivalent antigen
precipitation - 🧠 ANSWER ✔✔when a soluble antigen is combined with a soluble
antibody to produce insoluble compounds that are visible
-requires antibody and antigen to have multiple binding sites for one another and
equivalent concentrations
100% GUARATEED SUCCESS
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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,agglutination - 🧠 ANSWER ✔✔visible aggregation of particles resulting from
combination with specific antibodies
2
-two step process: sensitization and lattice formation
-*sensitization*: antigen and antibody unite through binding of antigenic
determinant sites (fast and reversible)
-*lattice formation*: visble aggregates form as multiple antigen and antibody
molecules bind to create a stable lattice
-produced by antibodies called *agglutinins*
agglutination inhibition - 🧠 ANSWER ✔✔an agglutination rxn based on
competition between antigen-coated particles and soluble patient antigens for a
limited number of antibody-combining sites
-lack of agglutination is a positive test result
-used to detect hapten antigens (illicit drugs)
precipitation curve - 🧠 ANSWER ✔✔-zone of equivalence
-prozone phenomenon
-postzone phenomenon
100% GUARATEED SUCCESS
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,immunoturbidemetry - 🧠 ANSWER ✔✔a technique for determining the
concentration of particles in a solution based on the change in abs caused by a
3
reduction in light intensity that occurs when an incident beam is passed through a
soln in which antigen-antibody complexes are forming
-measurement of ppt reactions
nephelometry - 🧠 ANSWER ✔✔a technique for determining the concentration of
particles in a solution by measuring the light scattered at a particular angle from
the incident beam as it passes through the solution
-measurement of ppt reaction
-sens: 1010 micrograms Ab/mL
radial immunodiffusion (RID) - 🧠 ANSWER ✔✔serological test detecting the
precipitate of Ag:Ab complexes in which antigen is placed into a well and allowed
to diffuse outward in all directions; precipitate formation will be in a ring, and the
thickness of the ring is proportional to the concentration of antigen
-*end point method*: allows reaction to go to completion, so the square of
diameter is proportional to antigen conc
-*kinetic method*: faster and measurement is taken before rxn is complete
-measurement of ppt reaction
100% GUARATEED SUCCESS
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, immunofixation electrophoresis - 🧠 ANSWER ✔✔double diffusion technique
where proteins in pt serum are electrophoresed then Ab is applied directly to the
4
gel. ppt forms where Ag-Ab combination has taken place
-performed to visualize decr/incr production of Ab classes and to differentiated
monoclonal and polyclonal Igs
-variable sensitivity
-measurement of ppt reaction
ouchterlony diffusion - 🧠 ANSWER ✔✔double diffusion technique where wells
are cut into gel and both Ag and Ab diffuse out radially. a line of ppt forms where
Ag and Ab meet in equiv amts
-3 possible patterns
-*identity*: if the Ag are identical they will react with the same Ab and the ppt line
forms a continuous arc
-*nonidentity*: Ag share no identical determinants and will react with different
Abs and two crossed lines are formed
-*partial identity*: Abs react with two similar Ag forming 2 lines and a spur that
points to the similar Ag
100% GUARATEED SUCCESS
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
Questions and Answers 100%
1
Guaranteed Success | Already Rated A+
affinity (antigen-antibody binding) - 🧠 ANSWER ✔✔the initial force of attraction
that exists between Fab site on an antibody molecule and a single epitope on an
antigen
-strength of attraction depends on specificity of antibody for antigen (ex: cross
reacting antigens have lower affinity)
avidity (antigen-antibody binding) - 🧠 ANSWER ✔✔sum of attractive forces
between an antigen and antibody; the strength with which a multivalent antibody
binds a multivalent antigen
precipitation - 🧠 ANSWER ✔✔when a soluble antigen is combined with a soluble
antibody to produce insoluble compounds that are visible
-requires antibody and antigen to have multiple binding sites for one another and
equivalent concentrations
100% GUARATEED SUCCESS
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,agglutination - 🧠 ANSWER ✔✔visible aggregation of particles resulting from
combination with specific antibodies
2
-two step process: sensitization and lattice formation
-*sensitization*: antigen and antibody unite through binding of antigenic
determinant sites (fast and reversible)
-*lattice formation*: visble aggregates form as multiple antigen and antibody
molecules bind to create a stable lattice
-produced by antibodies called *agglutinins*
agglutination inhibition - 🧠 ANSWER ✔✔an agglutination rxn based on
competition between antigen-coated particles and soluble patient antigens for a
limited number of antibody-combining sites
-lack of agglutination is a positive test result
-used to detect hapten antigens (illicit drugs)
precipitation curve - 🧠 ANSWER ✔✔-zone of equivalence
-prozone phenomenon
-postzone phenomenon
100% GUARATEED SUCCESS
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,immunoturbidemetry - 🧠 ANSWER ✔✔a technique for determining the
concentration of particles in a solution based on the change in abs caused by a
3
reduction in light intensity that occurs when an incident beam is passed through a
soln in which antigen-antibody complexes are forming
-measurement of ppt reactions
nephelometry - 🧠 ANSWER ✔✔a technique for determining the concentration of
particles in a solution by measuring the light scattered at a particular angle from
the incident beam as it passes through the solution
-measurement of ppt reaction
-sens: 1010 micrograms Ab/mL
radial immunodiffusion (RID) - 🧠 ANSWER ✔✔serological test detecting the
precipitate of Ag:Ab complexes in which antigen is placed into a well and allowed
to diffuse outward in all directions; precipitate formation will be in a ring, and the
thickness of the ring is proportional to the concentration of antigen
-*end point method*: allows reaction to go to completion, so the square of
diameter is proportional to antigen conc
-*kinetic method*: faster and measurement is taken before rxn is complete
-measurement of ppt reaction
100% GUARATEED SUCCESS
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, immunofixation electrophoresis - 🧠 ANSWER ✔✔double diffusion technique
where proteins in pt serum are electrophoresed then Ab is applied directly to the
4
gel. ppt forms where Ag-Ab combination has taken place
-performed to visualize decr/incr production of Ab classes and to differentiated
monoclonal and polyclonal Igs
-variable sensitivity
-measurement of ppt reaction
ouchterlony diffusion - 🧠 ANSWER ✔✔double diffusion technique where wells
are cut into gel and both Ag and Ab diffuse out radially. a line of ppt forms where
Ag and Ab meet in equiv amts
-3 possible patterns
-*identity*: if the Ag are identical they will react with the same Ab and the ppt line
forms a continuous arc
-*nonidentity*: Ag share no identical determinants and will react with different
Abs and two crossed lines are formed
-*partial identity*: Abs react with two similar Ag forming 2 lines and a spur that
points to the similar Ag
100% GUARATEED SUCCESS
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED
