Hematology Exam 1 ACTUAL UPDATED
Exam Questions and CORRECT Answers
The hormone responsible for red blood cell development in the bone marrow is: - CORRECT
ANSWER - erythropoietin
when hand washing after a patient contact, the soap application process should last at least -
CORRECT ANSWER - 15 seconds
safety training is part of new employee training in health care and includes - CORRECT
ANSWER - bio hazards
chem hazards
environmental hazards
the _____ is on elf the most stable parameters in a CBC - CORRECT ANSWER - MCV
a peripheral blood smear indicator of ineffective bone marrow response is - CORRECT
ANSWER - a lack of polychromasia
control materials are - CORRECT ANSWER - analyzed concurrently with the unknown
samples.
which of the following behaviors is a violation of standard precautions - CORRECT
ANSWER - placing lab notebooks on lab work area
standards and calibrators differ from control materials because - CORRECT ANSWER -
an exact amount of salute is present in a standard of calibrator
accuracy is a measurement of the true value of an analyte - CORRECT ANSWER - true
,which of the following is the definition of a reference interval - CORRECT ANSWER -
values established for a particular analyze, given a method, instrument or patient population
the average of a group of data points is defined as the - CORRECT ANSWER - mean
what is the average M:E ratio for normal adult bone marrow - CORRECT ANSWER - 4:1
proper mixing of samples and timely delivery of samples to the lab are both examples of -
CORRECT ANSWER - preanalytic variables
delta checks are used in the hematology lab to - CORRECT ANSWER - compare past
patient results to the current result
the spleen harbors ___ of the circulatory platelet mass - CORRECT ANSWER - 1/3
correlation checks between the red blood cell count, the hemoglobin, and the hematocrit are
significant parts of QA in the hem lab. these correlations are known as - CORRECT
ANSWER - rules of three
a delta check is a historical reference on samples run in the lab. once a samples fails a delta
check, the most obvious corrective action is to - CORRECT ANSWER - verify the id of
the patient sample
what is the most useful corrective action for the microscope when fine details cannot be
visualized in immature cells - CORRECT ANSWER - open up diaphragm for maximum
light
Which of the following represents an example of a safety violation in the laboratory? -
CORRECT ANSWER - application of cosmetics, mouth pipetting, consuming bottled
water
, T cells are responsible for humoral immunity. - CORRECT ANSWER - false
Which of these assays is the best test to assess the bone marrow's response to anemic stress? -
CORRECT ANSWER - reticulocyte count
A normal distribution curve will have 99.7% of the measured values fall within 2 SDs. -
CORRECT ANSWER - false
Patients with moderate anemias (7 to 10 g/dL) may be asymptomatic. - CORRECT
ANSWER - true
Which of the following is not considered a postanalytic variable? - CORRECT
ANSWER - proper anticoagulant used
A Wright-stained smear of a patient with an elevated reticulocyte count should show: -
CORRECT ANSWER - polychromasia
The erythrocyte stage that marks the beginning of hemoglobinization is called: - CORRECT
ANSWER - polychromatophilic normoblast
The red cell protein that is responsible for deformability and flexibility of the red cell is: -
CORRECT ANSWER - spectrin
Which of the following RBC pathways is responsible for providing 90% of the cellular ATP for
red cell metabolism? - CORRECT ANSWER - Embden-Meyerhof pathway
The basic pathophysiology of the thalassemic conditions is a/an: - CORRECT ANSWER -
decreased or absent globing chain synthesis
Asynchrony in the bone marrow is defined as the: - CORRECT ANSWER - nuclear
development and hemoglobin development that is unbalanced
Exam Questions and CORRECT Answers
The hormone responsible for red blood cell development in the bone marrow is: - CORRECT
ANSWER - erythropoietin
when hand washing after a patient contact, the soap application process should last at least -
CORRECT ANSWER - 15 seconds
safety training is part of new employee training in health care and includes - CORRECT
ANSWER - bio hazards
chem hazards
environmental hazards
the _____ is on elf the most stable parameters in a CBC - CORRECT ANSWER - MCV
a peripheral blood smear indicator of ineffective bone marrow response is - CORRECT
ANSWER - a lack of polychromasia
control materials are - CORRECT ANSWER - analyzed concurrently with the unknown
samples.
which of the following behaviors is a violation of standard precautions - CORRECT
ANSWER - placing lab notebooks on lab work area
standards and calibrators differ from control materials because - CORRECT ANSWER -
an exact amount of salute is present in a standard of calibrator
accuracy is a measurement of the true value of an analyte - CORRECT ANSWER - true
,which of the following is the definition of a reference interval - CORRECT ANSWER -
values established for a particular analyze, given a method, instrument or patient population
the average of a group of data points is defined as the - CORRECT ANSWER - mean
what is the average M:E ratio for normal adult bone marrow - CORRECT ANSWER - 4:1
proper mixing of samples and timely delivery of samples to the lab are both examples of -
CORRECT ANSWER - preanalytic variables
delta checks are used in the hematology lab to - CORRECT ANSWER - compare past
patient results to the current result
the spleen harbors ___ of the circulatory platelet mass - CORRECT ANSWER - 1/3
correlation checks between the red blood cell count, the hemoglobin, and the hematocrit are
significant parts of QA in the hem lab. these correlations are known as - CORRECT
ANSWER - rules of three
a delta check is a historical reference on samples run in the lab. once a samples fails a delta
check, the most obvious corrective action is to - CORRECT ANSWER - verify the id of
the patient sample
what is the most useful corrective action for the microscope when fine details cannot be
visualized in immature cells - CORRECT ANSWER - open up diaphragm for maximum
light
Which of the following represents an example of a safety violation in the laboratory? -
CORRECT ANSWER - application of cosmetics, mouth pipetting, consuming bottled
water
, T cells are responsible for humoral immunity. - CORRECT ANSWER - false
Which of these assays is the best test to assess the bone marrow's response to anemic stress? -
CORRECT ANSWER - reticulocyte count
A normal distribution curve will have 99.7% of the measured values fall within 2 SDs. -
CORRECT ANSWER - false
Patients with moderate anemias (7 to 10 g/dL) may be asymptomatic. - CORRECT
ANSWER - true
Which of the following is not considered a postanalytic variable? - CORRECT
ANSWER - proper anticoagulant used
A Wright-stained smear of a patient with an elevated reticulocyte count should show: -
CORRECT ANSWER - polychromasia
The erythrocyte stage that marks the beginning of hemoglobinization is called: - CORRECT
ANSWER - polychromatophilic normoblast
The red cell protein that is responsible for deformability and flexibility of the red cell is: -
CORRECT ANSWER - spectrin
Which of the following RBC pathways is responsible for providing 90% of the cellular ATP for
red cell metabolism? - CORRECT ANSWER - Embden-Meyerhof pathway
The basic pathophysiology of the thalassemic conditions is a/an: - CORRECT ANSWER -
decreased or absent globing chain synthesis
Asynchrony in the bone marrow is defined as the: - CORRECT ANSWER - nuclear
development and hemoglobin development that is unbalanced
