RODAKS HEMATOLOGY | Questions with 100% Verified Answers
| Latest Update 2026/2027
Question: 16. You require your laboratory staff to annually perform
manual lupus anticoagulant profiles on a set of plasmas with known values. This exercise is known as:
a. Assay validation b. Proficiency testing c. External quality
assessment d. Pre-pre-analytical variable assay
Answer: b. Proficiency testing
Question: 15. When performing a receiver operating curve analysis, what
parameter assesses the overall efficacy of an assay
a. Area under the curve b. Performance limit (threshold) c.
Positive predictive value d. Negative predictive value
Answer: a. Area under the curve
Question: 14. Review of laboratory report integrity is an example of: a.
Preanalytical quality assurance
b. Analytical quality control c. Postanalytical quality assurance
d. External quality assurance
Answer: c. Postanalytical quality assurance
Question: 13. Regular review of blood specimen collection quality is an
example of:
a. Postanalytical quality assurance b. Preanalytical quality
assurance c. Analytical quality control d. External quality assurance
Answer: b. Preanalytical quality assurance
Question: 12. What agency provides continuing medical laboratory
education?
a. Colorado Association for Continuing Medical Laboratory
Education (CACMLE)
b. Clinical Laboratory Improvement Advisory Committee
(CLIAC)
c. Centers for Medicare and Medicaid Services (CMS) d.
College of American Pathologists (CAP)
Answer: a. Colorado Association for Continuing Medical Laboratory Education (CACMLE)
Question: 11. What agency provides external quality assurance
(proficiency) surveys and laboratory accreditation? a. Clinical Laboratory Improvement Advisory Committee
(CLIAC)
b. Centers for Medicare and Medicaid Services (CMS) c.
College of American Pathologists (CAP)
d. Joint Commission
Answer: c. College of American Pathologists (CAP
,Question: 10. You perform a clinical efficacy test and get the following
results: Unaffected by Disease or Condition Affected by Disease or Condition Assay is negative 40 Affected by
Disease or Condition Assay os negative 5 Unaffected by Disease or Condition Assay is positive 10 Affected by
Disease or Condition Assay is positive 45 What is the number of false-negative results? a. 40
b. 10
c. 5 d. 45
Answer: c. 5
Question: 9. You purchase a preserved whole blood specimen from a
distributor who provides the mean values for several complete blood count analytes. What is this specimen
called?
a. Normal specimenb. Calibrator
c. Control
d. Blank
Answer: c. Control
Question: a . Confirming linearity b . Setting the reference interval 8. A laboratory scientist measures
prothrombin time for plasma aliquots from 15 healthy males and 15 healthy females . She computes the mean
and 95.5 % confidence interval and notes that they duplicate the manufacturer's statistics within 5 % . This
procedure is known as : c . Determining the therapeutic range d . Establishing the reference interval by
transference
Answer: d . Establishing the reference interval by transference
Question: 7. The laboratory purchases reagents from a manufacturer and
develops an assay using standard references . What FDA category is this assay ? a . Cleared b . Home - brew c .
Research use only d . Analyte - specific reagent
Answer: d . Analyte - specific reagent
Question: 6. The ability of an assay to distinguish the targeted analyte
from interfering substances within the specimen matrix is called : a . Analytical specificity b . Analytical
sensitivity c . Clinical specificity d . Clinical sensitivity
Answer: a . Analytical specificity
Question: 5. A WBC count control has a mean value of 6000 / mL and a
standard deviation of 300 / mL . What is the 95.5 % confidence interval ? a . 3000 to 9000 / mL b . 5400 to
6600 / mL c . 5500 to 6500 / mL d . 5700 to 6300 / mL
Answer: b . 5400 to 6600 / mL
Question: 4. The acceptable hemoglobin control value range is 13 6 0.4
g / dL . The control is assayed five times and produces the following five results : 12.0 g / dL 12.3 g / dL 12.0 g /
dL 12.2 g / dL 12.1 g dL These results are : a . Accurate but not precise b . Precise but not accurate c . Both
accurate and precise d . Neither accurate nor precise
Answer: b . Precise but not accurate
Question: 3. Which is a statistical test comparing means ? a . Bland
Altman b . Student's t test c ANOVA d . Pearson
Answer: b . Student's t - test
Question: Standard precautions apply to all of the following except a . Blood b. Cerebrospinal fluid c Semen d
Concentrated
Answer: d Concentrated acids
, Question: 2. The most important practice in preventing the spread of
disease is a Wearing masks during patient contact b . Proper hand washing c Wearing disposable laboratory
coats d Identifying specimens from known or suspected HIV and HBV infected patients with a red label
Answer: b Proper hand washing
Question: 3. The appropriate dilution of bleach to be used in laboratory
disinfection is : a.1 : 2 b . 1 : 5 c. 1:10 d 1 100
Answer: c 1:10
Question: 4. How frequently should fire alarms and sprinkler systems be
tested a . Weekly b . Monthly c . Quarterly d . Annually
Answer: c . Quarterly
Question: 5. Where should alcohol and other flammable chemicals be
stored ? a . In an approved safety can or storage cabinet away from heat sources b Under a hood and arranged
alphabetically for ease of identification in an emergency c In a refrigerator at 28 C to 88 C to reduce
volatilization d . On a low shelf in an area protected from light
Answer: a . In an approved safety can or storage cabinet away from heat sources
Question: 6. The most frequent cause of needle punctures is :
a . Patient movement during venipuncture b . Improper disposal of phlebotomy equipment c . Inattention
during removal of needle after venipuncture d . Failure to attach needle firmly to syringe or tube holder
Answer: b . Improper disposal of phlebotomy equipment
Question: 7. Under which of the following circumstances would a SDS be
helpful?
a. A phlebotomist has experienced a needle puncture with a
clean needle.
b. A fire extinguisher failed during routine testing. c. A
pregnant laboratory employee has asked whether she needs to be concerned about working with a given
reagent
d. During a safety inspection, an aged microscope power
supply is found to have a frayed power cord
Answer: c. A pregnant laboratory employee has asked whether she needs to be concerned about
working with a given reagent
Question: 8. It is a busy evening in the City Hospital hematology
department . One staff member called in sick , and there was a major auto accident that has one staff member
tied up in the blood bank all evening . Mary , the medical laboratory scientist covering hematology , is in a
hurry to get a stat sample on the analyzer but needs to pour off an aliquot for another department . She is
wearing gloves and a lab coat She carefully covers the stopper of the well - mixed ethylenediaminetetraacetic
acid ( EDTA ) tube with a gauze square and tilts the stopper toward her so it opens away from her She pours off
about 1 mL into a prelabeled tube replaces the stopper of the EDTA tube , and puts it in the sample rack and
sets it on the conveyor She then brings the poured sample off to the other department How would you assess
Mary's safety practice ? . Mary was careful and followed all appropriate procedures . b . Mary should have used
a shield when opening the tube . c . Mary should have poured the sample into a sterile tube . d . Mary should
have wiped the tube with alcohol after replacing the stopper
Answer: b . Mary should have used a shield when opening the tube .
Question: 9. What class fire extinguisher would be appropriate to use on
a fire in a chemical cabinet ? a . Class A b . Class B c . Class C d . Class D
Answer: b . Class B
| Latest Update 2026/2027
Question: 16. You require your laboratory staff to annually perform
manual lupus anticoagulant profiles on a set of plasmas with known values. This exercise is known as:
a. Assay validation b. Proficiency testing c. External quality
assessment d. Pre-pre-analytical variable assay
Answer: b. Proficiency testing
Question: 15. When performing a receiver operating curve analysis, what
parameter assesses the overall efficacy of an assay
a. Area under the curve b. Performance limit (threshold) c.
Positive predictive value d. Negative predictive value
Answer: a. Area under the curve
Question: 14. Review of laboratory report integrity is an example of: a.
Preanalytical quality assurance
b. Analytical quality control c. Postanalytical quality assurance
d. External quality assurance
Answer: c. Postanalytical quality assurance
Question: 13. Regular review of blood specimen collection quality is an
example of:
a. Postanalytical quality assurance b. Preanalytical quality
assurance c. Analytical quality control d. External quality assurance
Answer: b. Preanalytical quality assurance
Question: 12. What agency provides continuing medical laboratory
education?
a. Colorado Association for Continuing Medical Laboratory
Education (CACMLE)
b. Clinical Laboratory Improvement Advisory Committee
(CLIAC)
c. Centers for Medicare and Medicaid Services (CMS) d.
College of American Pathologists (CAP)
Answer: a. Colorado Association for Continuing Medical Laboratory Education (CACMLE)
Question: 11. What agency provides external quality assurance
(proficiency) surveys and laboratory accreditation? a. Clinical Laboratory Improvement Advisory Committee
(CLIAC)
b. Centers for Medicare and Medicaid Services (CMS) c.
College of American Pathologists (CAP)
d. Joint Commission
Answer: c. College of American Pathologists (CAP
,Question: 10. You perform a clinical efficacy test and get the following
results: Unaffected by Disease or Condition Affected by Disease or Condition Assay is negative 40 Affected by
Disease or Condition Assay os negative 5 Unaffected by Disease or Condition Assay is positive 10 Affected by
Disease or Condition Assay is positive 45 What is the number of false-negative results? a. 40
b. 10
c. 5 d. 45
Answer: c. 5
Question: 9. You purchase a preserved whole blood specimen from a
distributor who provides the mean values for several complete blood count analytes. What is this specimen
called?
a. Normal specimenb. Calibrator
c. Control
d. Blank
Answer: c. Control
Question: a . Confirming linearity b . Setting the reference interval 8. A laboratory scientist measures
prothrombin time for plasma aliquots from 15 healthy males and 15 healthy females . She computes the mean
and 95.5 % confidence interval and notes that they duplicate the manufacturer's statistics within 5 % . This
procedure is known as : c . Determining the therapeutic range d . Establishing the reference interval by
transference
Answer: d . Establishing the reference interval by transference
Question: 7. The laboratory purchases reagents from a manufacturer and
develops an assay using standard references . What FDA category is this assay ? a . Cleared b . Home - brew c .
Research use only d . Analyte - specific reagent
Answer: d . Analyte - specific reagent
Question: 6. The ability of an assay to distinguish the targeted analyte
from interfering substances within the specimen matrix is called : a . Analytical specificity b . Analytical
sensitivity c . Clinical specificity d . Clinical sensitivity
Answer: a . Analytical specificity
Question: 5. A WBC count control has a mean value of 6000 / mL and a
standard deviation of 300 / mL . What is the 95.5 % confidence interval ? a . 3000 to 9000 / mL b . 5400 to
6600 / mL c . 5500 to 6500 / mL d . 5700 to 6300 / mL
Answer: b . 5400 to 6600 / mL
Question: 4. The acceptable hemoglobin control value range is 13 6 0.4
g / dL . The control is assayed five times and produces the following five results : 12.0 g / dL 12.3 g / dL 12.0 g /
dL 12.2 g / dL 12.1 g dL These results are : a . Accurate but not precise b . Precise but not accurate c . Both
accurate and precise d . Neither accurate nor precise
Answer: b . Precise but not accurate
Question: 3. Which is a statistical test comparing means ? a . Bland
Altman b . Student's t test c ANOVA d . Pearson
Answer: b . Student's t - test
Question: Standard precautions apply to all of the following except a . Blood b. Cerebrospinal fluid c Semen d
Concentrated
Answer: d Concentrated acids
, Question: 2. The most important practice in preventing the spread of
disease is a Wearing masks during patient contact b . Proper hand washing c Wearing disposable laboratory
coats d Identifying specimens from known or suspected HIV and HBV infected patients with a red label
Answer: b Proper hand washing
Question: 3. The appropriate dilution of bleach to be used in laboratory
disinfection is : a.1 : 2 b . 1 : 5 c. 1:10 d 1 100
Answer: c 1:10
Question: 4. How frequently should fire alarms and sprinkler systems be
tested a . Weekly b . Monthly c . Quarterly d . Annually
Answer: c . Quarterly
Question: 5. Where should alcohol and other flammable chemicals be
stored ? a . In an approved safety can or storage cabinet away from heat sources b Under a hood and arranged
alphabetically for ease of identification in an emergency c In a refrigerator at 28 C to 88 C to reduce
volatilization d . On a low shelf in an area protected from light
Answer: a . In an approved safety can or storage cabinet away from heat sources
Question: 6. The most frequent cause of needle punctures is :
a . Patient movement during venipuncture b . Improper disposal of phlebotomy equipment c . Inattention
during removal of needle after venipuncture d . Failure to attach needle firmly to syringe or tube holder
Answer: b . Improper disposal of phlebotomy equipment
Question: 7. Under which of the following circumstances would a SDS be
helpful?
a. A phlebotomist has experienced a needle puncture with a
clean needle.
b. A fire extinguisher failed during routine testing. c. A
pregnant laboratory employee has asked whether she needs to be concerned about working with a given
reagent
d. During a safety inspection, an aged microscope power
supply is found to have a frayed power cord
Answer: c. A pregnant laboratory employee has asked whether she needs to be concerned about
working with a given reagent
Question: 8. It is a busy evening in the City Hospital hematology
department . One staff member called in sick , and there was a major auto accident that has one staff member
tied up in the blood bank all evening . Mary , the medical laboratory scientist covering hematology , is in a
hurry to get a stat sample on the analyzer but needs to pour off an aliquot for another department . She is
wearing gloves and a lab coat She carefully covers the stopper of the well - mixed ethylenediaminetetraacetic
acid ( EDTA ) tube with a gauze square and tilts the stopper toward her so it opens away from her She pours off
about 1 mL into a prelabeled tube replaces the stopper of the EDTA tube , and puts it in the sample rack and
sets it on the conveyor She then brings the poured sample off to the other department How would you assess
Mary's safety practice ? . Mary was careful and followed all appropriate procedures . b . Mary should have used
a shield when opening the tube . c . Mary should have poured the sample into a sterile tube . d . Mary should
have wiped the tube with alcohol after replacing the stopper
Answer: b . Mary should have used a shield when opening the tube .
Question: 9. What class fire extinguisher would be appropriate to use on
a fire in a chemical cabinet ? a . Class A b . Class B c . Class C d . Class D
Answer: b . Class B
