MLT 106 UNIT6 UPDATED Exam
Questions and CORRECT Answers
Which hepatitis virus is dependent upon the presence of the Hepatitis B virus? - CORRECT
ANSWER - Hepatitis D virus
What method is currently being used in the detection of HIV infection in humans? - CORRECT
ANSWER - Enzyme immunoassay
What is known to cause meningoencephalitis as a human, avian and equine neuropathogen? -
CORRECT ANSWER - West Nile virus
An ABO HDFN in a group B infant group of a group O mother is more commonly found in
which population? - CORRECT ANSWER - African American
The detection of fetal red blood cells containing Hgb F is shown as _____ in the Kleibauer-Betke
test. - CORRECT ANSWER - Pink
What type of transfusion is used to prevent kernicterus? - CORRECT ANSWER -
Exchange transfusion
During 10-12 weeks gestation, what can be used to test for the presence of the D antigen in the
fetus? - CORRECT ANSWER - Fetal DNA testing
Cold AIHA is sometimes associated with infection in: - CORRECT ANSWER -
Mycoplasma pneumoniae
Immune hemolytic anemias may be classified in what categories? - CORRECT
ANSWER - Alloimmune, autoimmune, and drug-induced
, When penicillin is involved, which of the classic mechanisms is typically involved in the
hemolytic process? - CORRECT ANSWER - Drug-adsorption
What is the confirmation test for HIV? - CORRECT ANSWER - Western Blot
Which marker is usually not detected when the hepatitis B-infected patients enters the
convalescent (recovery) phase? - CORRECT ANSWER - HBeAg
What characterizes hemolytic disease of the newborn (HDFN)? - CORRECT ANSWER -
Destruction of the fetus' RBCs by antibodies produced by the mother
What effect does ABO incompatibility between the mother and the fetus have on maternal
sensitization to Rh antigen? - CORRECT ANSWER - The chance of maternal sensitization
to Rh antigen is decreased.
Severe anemia, effusions, and ascites from hepatomegaly and splenomegaly: - CORRECT
ANSWER - Hydrops fetalis
Characteristics of benign cold autoantibodies: - CORRECT ANSWER - -Encountered
during testing performed at 4C
-IgM and can activate complement in vitro
-Normally presents no serologic problem
-Occasionally are clinically significant and may cause immune hemolytic anemia
Immune hemolytic anemia (IHA) is defined as: - CORRECT ANSWER - A shortened
RBC survival mediated through humoral antibody production
What describes the drug-adsorption (Hapten) mechanism? - CORRECT ANSWER - Drugs
bind firmly to proteins of the RBC membrane
Questions and CORRECT Answers
Which hepatitis virus is dependent upon the presence of the Hepatitis B virus? - CORRECT
ANSWER - Hepatitis D virus
What method is currently being used in the detection of HIV infection in humans? - CORRECT
ANSWER - Enzyme immunoassay
What is known to cause meningoencephalitis as a human, avian and equine neuropathogen? -
CORRECT ANSWER - West Nile virus
An ABO HDFN in a group B infant group of a group O mother is more commonly found in
which population? - CORRECT ANSWER - African American
The detection of fetal red blood cells containing Hgb F is shown as _____ in the Kleibauer-Betke
test. - CORRECT ANSWER - Pink
What type of transfusion is used to prevent kernicterus? - CORRECT ANSWER -
Exchange transfusion
During 10-12 weeks gestation, what can be used to test for the presence of the D antigen in the
fetus? - CORRECT ANSWER - Fetal DNA testing
Cold AIHA is sometimes associated with infection in: - CORRECT ANSWER -
Mycoplasma pneumoniae
Immune hemolytic anemias may be classified in what categories? - CORRECT
ANSWER - Alloimmune, autoimmune, and drug-induced
, When penicillin is involved, which of the classic mechanisms is typically involved in the
hemolytic process? - CORRECT ANSWER - Drug-adsorption
What is the confirmation test for HIV? - CORRECT ANSWER - Western Blot
Which marker is usually not detected when the hepatitis B-infected patients enters the
convalescent (recovery) phase? - CORRECT ANSWER - HBeAg
What characterizes hemolytic disease of the newborn (HDFN)? - CORRECT ANSWER -
Destruction of the fetus' RBCs by antibodies produced by the mother
What effect does ABO incompatibility between the mother and the fetus have on maternal
sensitization to Rh antigen? - CORRECT ANSWER - The chance of maternal sensitization
to Rh antigen is decreased.
Severe anemia, effusions, and ascites from hepatomegaly and splenomegaly: - CORRECT
ANSWER - Hydrops fetalis
Characteristics of benign cold autoantibodies: - CORRECT ANSWER - -Encountered
during testing performed at 4C
-IgM and can activate complement in vitro
-Normally presents no serologic problem
-Occasionally are clinically significant and may cause immune hemolytic anemia
Immune hemolytic anemia (IHA) is defined as: - CORRECT ANSWER - A shortened
RBC survival mediated through humoral antibody production
What describes the drug-adsorption (Hapten) mechanism? - CORRECT ANSWER - Drugs
bind firmly to proteins of the RBC membrane
