UAMS Blood Bank Lab Exam 1 UPDATED ACTUAL Questions and CORRECT
Answers
Why reverse typing is not performed on Babies do not build antibodies until approximately 3-6 months years of age.
babies?
What is the most appropriate cell 4-6%
suspension strength for blood bank testing
using the tube method?
, Activation of which of the following Complement proteins
proteins results in cell hemolysis?
What can be described as red blood cells Rouleaux
appearing as long, cylinder shaped rows,
often termed as stacked coins?
What causes rouleaux? Excess Protein
Concerning the reverse type testing, match Commercially Prepared Red Blood Cells
the appropriate source for antigen
Concerning the reverse type testing, match Patient Plasma
the appropriate source for antibody.
Centrifugation at optimal speed and time helps to facilitate the formation of latticed
Why centrifugation of test tubes is used in
network by forcing red blood cells together in the test environment, allowing for
the ABO determination?
visualization of agglutination.
Effects of Over Centrifugation (too high of False Positive
speed or too long of time)
Effects of Under Centrifugation (too slow False Negative
of speed or too short of time)
Excess Antibody Prozone
Excess Antigen Postzone
Effects of The red cell suspension is too False Negative
thick (Excess Antigen)
Effects of The red cell suspension is too False Negative
thin. (Excess antibody)
Small aggregates, turbid reddish 1+
background
One solid aggregate 4+
Stack of coins viewed microscopically Rouleaux
No aggregates, smooth suspension Negative
Several large aggregates, clear 3+
background
Tiny aggregates, turbid reddish Weak (w+)
background
Medium aggregates, clear background 2+
What is the purpose of Anti-A,B? Used to detect weak subgroups of A
What percent of Type A2 individuals have 1-8%
Anti-A1?
What percent of Type A2B individuals have 22-35%
Anti-A1?
Why it is important to grade typing To detect discrepancies.
reactions?
What reactions is expected when Type A 4+
patient red blood cells are tested with anti-
A,B reagent during forward testing?
Answers
Why reverse typing is not performed on Babies do not build antibodies until approximately 3-6 months years of age.
babies?
What is the most appropriate cell 4-6%
suspension strength for blood bank testing
using the tube method?
, Activation of which of the following Complement proteins
proteins results in cell hemolysis?
What can be described as red blood cells Rouleaux
appearing as long, cylinder shaped rows,
often termed as stacked coins?
What causes rouleaux? Excess Protein
Concerning the reverse type testing, match Commercially Prepared Red Blood Cells
the appropriate source for antigen
Concerning the reverse type testing, match Patient Plasma
the appropriate source for antibody.
Centrifugation at optimal speed and time helps to facilitate the formation of latticed
Why centrifugation of test tubes is used in
network by forcing red blood cells together in the test environment, allowing for
the ABO determination?
visualization of agglutination.
Effects of Over Centrifugation (too high of False Positive
speed or too long of time)
Effects of Under Centrifugation (too slow False Negative
of speed or too short of time)
Excess Antibody Prozone
Excess Antigen Postzone
Effects of The red cell suspension is too False Negative
thick (Excess Antigen)
Effects of The red cell suspension is too False Negative
thin. (Excess antibody)
Small aggregates, turbid reddish 1+
background
One solid aggregate 4+
Stack of coins viewed microscopically Rouleaux
No aggregates, smooth suspension Negative
Several large aggregates, clear 3+
background
Tiny aggregates, turbid reddish Weak (w+)
background
Medium aggregates, clear background 2+
What is the purpose of Anti-A,B? Used to detect weak subgroups of A
What percent of Type A2 individuals have 1-8%
Anti-A1?
What percent of Type A2B individuals have 22-35%
Anti-A1?
Why it is important to grade typing To detect discrepancies.
reactions?
What reactions is expected when Type A 4+
patient red blood cells are tested with anti-
A,B reagent during forward testing?
