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Multiple Choice Quiz
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1
The major component of red blood cells is:
A)iron
B)hemoglobin
C)oxygen
D)calcium
2
The primary role of hemoglobin in the blood is:
A)manufacturing iron that is needed for the production of red cells
B)producing erythropoietin hormone for red blood cells
C)transporting oxygen from the lungs to the cells
D)fighting infection as part of the immune system
3
An instrument that is used to measure hemoglobin is known as a:
A)hemolytic analyzer
B)hemoglobinometer
C)centrifuge
D)microcuvette
4
The hemoglobin molecule is carried within which of the following elements?
A)White cells
B)Platelets
C)Red cells
D)Iron
5
What effect does hyperbilirubinemia have on hemoglobin testing?
A)No effect unless patient is male
B)Will cause falsely high hemoglobin reading
C)Usually causes low readings and should be repeated
D)No effect if used on plasma instead of whole blood
6
Packed cell volume is another name for:
A)hemoglobin
B)hemoglobinopathy
C)hematocrit
D)hematology
7
Which of the following is a true statement?
A)The microhematocrit procedure should be performed in duplicate.
B)There is no use in running quality control with hematocrits because of the instrumentation.
C)Microhematocrits should be performed on venous blood only.
D)Packed cell volume is another name for hemoglobin testing.
8
When blood is collected for hematocrit using the capillary method, which of the following tubes should be used in the collecting?
A)Lavender stopper tube
B)EDTA tube
C)Red stopper tube
D)Heparinized capillary tubes
9
Which tube should be used to collect blood sample from a venipuncture to perform a hematocrit?
A)EDTA tube
B)Heparinized
C)Capillary tube
D)Red stopper tube
10
About 95 percent of the oxygen in the body is transported by which of the following?
A)The hemoglobin molecule
B)Lymph fluid in tissues
C)The lungs
D)The small intestines





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