,Chapter .1: .Introduction .to .Hematology .and .Basic .Laboratory .Practice
Multiple .Choice
Identify .the .choice .that .best .completes .the .statement .or .answers .the .question.
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
2. What .is .the .most .useful .corrective .action .for .the .microscope .when .fine .details .cannot .be
.visualized .in .immature .cells?
a. Open .up .diaphragm .for .maximum .light.
b. Wipe .off .lenses .with .lens .cleaner.
c. Get .a .new .slide.
d. Move .to .a .lower .power.
3. Which .of .the .following .behaviors .is .a .violation .of .standard .precautions?
a. Handwashing .after .glove .removal
b. Use .of .impermeable .laboratory .gowns
c. Use .of .goggles .and .face .shields
d. Placing .laboratory .notebooks .on .laboratory .work .area
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
5. If .the .confidence .interval .for .most .laboratories .is .95.5%, .what .is .the .acceptable .range .for
.hemoglobin .if .a .hemoglobin .control .was .run .with .a .mean .of .12.5 .and .a .standard .deviation .of
.1.0?
a. 9.5 .to .12.5
b. 10.5 .to .14.5
c. 11.5 .to .15.5
d. 10.0 .to .13.5
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
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
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
9. . . Which .of .the .following .is .not .considered .a .postanalytic .variable?
a. Delta .checks
b. Proper .anticoagulant .used
c. Specimen .checked .for .clots
d. Critical .results .called
. 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
. 11. . . The .average .of .a .group .of .data .points .is .defined .as .the:
a. Mean
b. Mode
c. Median
d. Modicum
. 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
. 13. . Control .materials .are:
a. Analyzed .concurrently .with .the .unknown .samples
b. Substances .with .a .known .amount .of .analyte
c. Used .to .calibrate .the .method
d. All .of .the .above
. 14. . . Delta .checks .are .used .in .the .hematology .laboratory .to:
a. Compare .past .patient .results .to .the .current .result
b. Verify .control .accuracy
c. Establish .a .target .range
d. Establish .reference .ranges .for .a .particular .analyte
. 15. . . When .handwashing .after .a .patient .contact, .the .soap .application .process .should .last .at .least:
a. 5 .seconds
b. 15 .seconds
c. 20 .seconds
, d. 30 .seconds
. 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
True/False
Indicate .whether .the .statement .is .true .or .false.
. 17. . Standard .deviation .is .a .measurement .of .precision.
. 18. . . Accuracy .is .a .measurement .of .the .true .value .of .an .analyte.
. 19. . . A .normal .distribution .curve .will .have .99.7% .of .the .measured .values .fall .within .2 .SDs.
Short .Answer
Multiple .Choice
Identify .the .choice .that .best .completes .the .statement .or .answers .the .question.
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
2. What .is .the .most .useful .corrective .action .for .the .microscope .when .fine .details .cannot .be
.visualized .in .immature .cells?
a. Open .up .diaphragm .for .maximum .light.
b. Wipe .off .lenses .with .lens .cleaner.
c. Get .a .new .slide.
d. Move .to .a .lower .power.
3. Which .of .the .following .behaviors .is .a .violation .of .standard .precautions?
a. Handwashing .after .glove .removal
b. Use .of .impermeable .laboratory .gowns
c. Use .of .goggles .and .face .shields
d. Placing .laboratory .notebooks .on .laboratory .work .area
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
5. If .the .confidence .interval .for .most .laboratories .is .95.5%, .what .is .the .acceptable .range .for
.hemoglobin .if .a .hemoglobin .control .was .run .with .a .mean .of .12.5 .and .a .standard .deviation .of
.1.0?
a. 9.5 .to .12.5
b. 10.5 .to .14.5
c. 11.5 .to .15.5
d. 10.0 .to .13.5
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
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
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
9. . . Which .of .the .following .is .not .considered .a .postanalytic .variable?
a. Delta .checks
b. Proper .anticoagulant .used
c. Specimen .checked .for .clots
d. Critical .results .called
. 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
. 11. . . The .average .of .a .group .of .data .points .is .defined .as .the:
a. Mean
b. Mode
c. Median
d. Modicum
. 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
. 13. . Control .materials .are:
a. Analyzed .concurrently .with .the .unknown .samples
b. Substances .with .a .known .amount .of .analyte
c. Used .to .calibrate .the .method
d. All .of .the .above
. 14. . . Delta .checks .are .used .in .the .hematology .laboratory .to:
a. Compare .past .patient .results .to .the .current .result
b. Verify .control .accuracy
c. Establish .a .target .range
d. Establish .reference .ranges .for .a .particular .analyte
. 15. . . When .handwashing .after .a .patient .contact, .the .soap .application .process .should .last .at .least:
a. 5 .seconds
b. 15 .seconds
c. 20 .seconds
, d. 30 .seconds
. 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
True/False
Indicate .whether .the .statement .is .true .or .false.
. 17. . Standard .deviation .is .a .measurement .of .precision.
. 18. . . Accuracy .is .a .measurement .of .the .true .value .of .an .analyte.
. 19. . . A .normal .distribution .curve .will .have .99.7% .of .the .measured .values .fall .within .2 .SDs.
Short .Answer
