,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./visualize
d./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./hemo
globin./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./del
ta./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./patien
t./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./visualize
d./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./hemo
globin./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./del
ta./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./patien
t./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
