Hematology in Practice 3e Betty Ciesla (Teast Bank)
Chapter 1. Introduction to Hematology and Basic Laboratory Practice
Multiple Choice
1. Tube length when referring to the microscope is the:
A. Resolution power of the objective
B. Distance from the eyepiece to the objective
C. Numerical aperture
D. Magnitude of the image on the stage
ANS: B
OBJ: 1.3
2. What is the most useful corrective action for the microscope when fine details cannot be
visualized in immature cells?
A. Open up the diaphragm for maximum light.
B. Wipe off lenses with lens cleaner.
C. Get a new slide.
D. Move to a lower power.
ANS: A
OBJ: 1.4
3. Which of the following behaviors is a violation of standard precautions?
A. Hand washing after glove removal
B. Use of impermeable laboratory gowns
C. Use of goggles and face shields
D. Placing laboratory notebooks on laboratory work area
ANS: D
OBJ: 1.5
4. Standards and calibrators differ from control materials because:
A. An exact amount of analyte is present in a standard or calibrator
B. A variable amount of analyte is present depending on patient samples
C. Standards only need to be within a target range
,D. Standards are run to the best estimate of the known value
ANS: A
OBJ: 1.7
5. Which of the following is involved in the study of hematology and used to determine sickness
and health?
A. Quantity of cells
B. Cellular structure
C. Cellular function
D. All of the above
ANS: D
OBJ: 1.1
6. Proper mixing of samples and timely delivery of samples to the laboratory are both examples
of:
A. Delta checks
B. Postanalytic variables
C. Preanalytic variables
D. Reflex testing
ANS: C
OBJ: 1.8
7. A delta check is a historical reference on samples run in the laboratories. Once a sample fails a
delta check, the most obvious corrective action is to:
A. Verify the identification of the patient sample
B. Reestablish the parameters of the delta check
C. Perform reflex testing
D. Perform a manual method
ANS: A
8. Which of the following is the definition of a reference interval?
A. A solution of a known amount of analyte
B. Materials analyzed concurrently with unknown samples
C. Values established for a particular analyte, given a method, instrument, or patient population
,D. Validation/techniques/on/flagged/samples
ANS:/C/
OBJ:/1.8
9. Which/of/the/following/is/not/considered/a/postanalytic/variable?
A. Delta/checks
B. Proper/anticoagulant/used
C. Specimen/checked/for/clots
D. Calling/critical/results
ANS:/B/
OBJ:/1.8
10. Error/analysis,/standard/protocols,/and/turnaround/time/are/all/part/of/the:
A. Quality/assurance/system
B. Quality/control/program
C. Reference/standards
D. Delta/check/protocol
ANS:/A/
OBJ:/1.7
11. The/average/of/a/group/of/data/points/is/defined/as/the:
A. Mean
B. Mode
C. Median
D. Modicum
ANS:/A/
OBJ:/1.7
12. Safety/training/is/part/of/new/employee/training/in/health/care/and/includes:
A. Biological/hazards
B. Chemical/hazards
C. Environmental/hazards
D. All/of/the/above
, ANS:/D/
OBJ:/1.6
13. When/viewing/a/slide/with/the/50/objective/lens,/the/total/magnification/being/used/is:
A. 50
B. 100
C. 500
D. 5000
ANS:/C/
OBJ:/1.3
14. Delta/checks/are/used/in/the/hematology/laboratory/to:
A. Compare/past/patient/results/with/the/current/result
B. Verify/control/accuracy
C. Establish/a/target/range
D. Establish/reference/ranges/for/a/particular/analyte
ANS:/A/
OBJ:/1.8
15. When/hand/washing/after/a/patient/contact,/the/soap/application/process/should/last/at/least:
A. 5/seconds
B. 15/seconds
C. 20/seconds
D. 30/seconds
ANS:/B/
OBJ:/1.6
16. Which/of/the/following/represents/an/example/of/a/safety/violation/in/the/laboratory?
A. Application/of/cosmetics
B. Mouth/pipetting
C. Consuming/bottled/water
D. All/the/above
ANS:/D/
OBJ:/1.6
Chapter 1. Introduction to Hematology and Basic Laboratory Practice
Multiple Choice
1. Tube length when referring to the microscope is the:
A. Resolution power of the objective
B. Distance from the eyepiece to the objective
C. Numerical aperture
D. Magnitude of the image on the stage
ANS: B
OBJ: 1.3
2. What is the most useful corrective action for the microscope when fine details cannot be
visualized in immature cells?
A. Open up the diaphragm for maximum light.
B. Wipe off lenses with lens cleaner.
C. Get a new slide.
D. Move to a lower power.
ANS: A
OBJ: 1.4
3. Which of the following behaviors is a violation of standard precautions?
A. Hand washing after glove removal
B. Use of impermeable laboratory gowns
C. Use of goggles and face shields
D. Placing laboratory notebooks on laboratory work area
ANS: D
OBJ: 1.5
4. Standards and calibrators differ from control materials because:
A. An exact amount of analyte is present in a standard or calibrator
B. A variable amount of analyte is present depending on patient samples
C. Standards only need to be within a target range
,D. Standards are run to the best estimate of the known value
ANS: A
OBJ: 1.7
5. Which of the following is involved in the study of hematology and used to determine sickness
and health?
A. Quantity of cells
B. Cellular structure
C. Cellular function
D. All of the above
ANS: D
OBJ: 1.1
6. Proper mixing of samples and timely delivery of samples to the laboratory are both examples
of:
A. Delta checks
B. Postanalytic variables
C. Preanalytic variables
D. Reflex testing
ANS: C
OBJ: 1.8
7. A delta check is a historical reference on samples run in the laboratories. Once a sample fails a
delta check, the most obvious corrective action is to:
A. Verify the identification of the patient sample
B. Reestablish the parameters of the delta check
C. Perform reflex testing
D. Perform a manual method
ANS: A
8. Which of the following is the definition of a reference interval?
A. A solution of a known amount of analyte
B. Materials analyzed concurrently with unknown samples
C. Values established for a particular analyte, given a method, instrument, or patient population
,D. Validation/techniques/on/flagged/samples
ANS:/C/
OBJ:/1.8
9. Which/of/the/following/is/not/considered/a/postanalytic/variable?
A. Delta/checks
B. Proper/anticoagulant/used
C. Specimen/checked/for/clots
D. Calling/critical/results
ANS:/B/
OBJ:/1.8
10. Error/analysis,/standard/protocols,/and/turnaround/time/are/all/part/of/the:
A. Quality/assurance/system
B. Quality/control/program
C. Reference/standards
D. Delta/check/protocol
ANS:/A/
OBJ:/1.7
11. The/average/of/a/group/of/data/points/is/defined/as/the:
A. Mean
B. Mode
C. Median
D. Modicum
ANS:/A/
OBJ:/1.7
12. Safety/training/is/part/of/new/employee/training/in/health/care/and/includes:
A. Biological/hazards
B. Chemical/hazards
C. Environmental/hazards
D. All/of/the/above
, ANS:/D/
OBJ:/1.6
13. When/viewing/a/slide/with/the/50/objective/lens,/the/total/magnification/being/used/is:
A. 50
B. 100
C. 500
D. 5000
ANS:/C/
OBJ:/1.3
14. Delta/checks/are/used/in/the/hematology/laboratory/to:
A. Compare/past/patient/results/with/the/current/result
B. Verify/control/accuracy
C. Establish/a/target/range
D. Establish/reference/ranges/for/a/particular/analyte
ANS:/A/
OBJ:/1.8
15. When/hand/washing/after/a/patient/contact,/the/soap/application/process/should/last/at/least:
A. 5/seconds
B. 15/seconds
C. 20/seconds
D. 30/seconds
ANS:/B/
OBJ:/1.6
16. Which/of/the/following/represents/an/example/of/a/safety/violation/in/the/laboratory?
A. Application/of/cosmetics
B. Mouth/pipetting
C. Consuming/bottled/water
D. All/the/above
ANS:/D/
OBJ:/1.6
