SKML Feces-chemie – Complete Certification Study
Guide with Practice 300 Q&A – Exams of Nursing
SECTION 1: QUALITY ASSURANCE & ACCREDITATION (Questions 1–60)
1. During a reagent lot change, a laboratory professional is addressing internal controls, run
acceptance, and recognition of systematic or random error. The consequence of error could be
significant. What should be done FIRST?
A. Proceed using the usual method without rechecking the changed condition.
B. Record only the final outcome and omit the basis for the decision.
C. Rely on a single assumption because it worked in a previous situation.
D. Verify the applicable requirement, current condition, and acceptance criteria before acting.
Answer: D
Rationale: A sound first step is to establish the requirement and actual condition. That prevents
later actions from being built on an unverified assumption.
2. During external-quality sample processing, which review question is most useful for
preventing recurrence of a problem?
A. Who can be assigned responsibility so the issue can be closed quickly?
B. How can the event description be shortened to reduce review time?
C. Which existing record can be copied to complete the investigation faster?
D. What condition or system weakness allowed the problem to occur, escape detection, or recur
despite existing controls?
Answer: D
Rationale: Prevention focuses on the system conditions that allowed the problem to occur or
escape, not simply on assigning blame.
3. Before repeating a measurement, how should a laboratory professional balance speed and
reliability when performing peer-group, target-value, bias, z-score, or allowable-error
interpretation?
A. Prioritize speed whenever the task is routine, even if verification is reduced.
B. Use the most efficient approach that still preserves required controls, verification, traceability,
and acceptance criteria.
C. Use the most detailed possible process regardless of risk or relevance.
D. Defer documentation and verification whenever the schedule is under pressure.
,Answer: B
Rationale: Efficiency is appropriate only when the controls needed for reliable, traceable,
acceptable performance remain intact.
4. During sample receipt, how should uncertainty affecting peer-group, target-value, bias,
z-score, or allowable-error interpretation be handled?
A. Ignore uncertainty unless it has already caused a failure.
B. Identify the uncertainty, determine whether it could change the decision, obtain more
evidence where practical, and document any residual limitation.
C. Choose the most optimistic interpretation so the process can continue.
D. Convert the uncertainty into a fixed value without documentation.
Answer: B
Rationale: Uncertainty should be identified, evaluated for impact, and documented. This
ensures the integrity of the interpretation process.
5. During external-quality sample processing, which action best preserves traceability for
pre-analytical stability, transport, preparation, and sample-identity controls?
A. Keep only the final result because intermediate evidence may create confusion.
B. Use personal notes instead of the controlled record to save time.
C. Link the observation, source information, decision, action, and outcome so another
competent person can reconstruct what occurred.
D. Record the action without identifying the source information used for the decision.
Answer: C
Rationale: Traceability means the chain from evidence to decision to outcome can be
reconstructed and reviewed.
6. Before repeating a measurement, when should work involving method principle, calibration
model, analytical range, and interference risks be paused for escalation?
A. Only after a failure has caused a measurable loss.
B. Whenever a task takes longer than originally planned.
C. When the condition is outside authority, competence, acceptance criteria, or available
controls cannot keep the risk at an acceptable level.
D. Only when two supervisors are available to review the issue together.
Answer: C
,Rationale: Escalation is appropriate when the condition exceeds competence, authority, criteria,
or controllable risk — before harm or invalid output occurs.
7. While reviewing a reference interval, the expected outcome for measurand or analyte
definition, specimen matrix, and clinical purpose stated in the title is not achieved. What
troubleshooting method is strongest?
A. Confirm the observation, isolate likely variables systematically, test one change at a time, and
document results.
B. Replace multiple components or steps simultaneously without recording what changed.
C. Repeat the same action until an acceptable result appears.
D. Ignore intermittent evidence because it cannot be reproduced immediately.
Answer: A
Rationale: Systematic troubleshooting preserves cause-and-effect information and makes the
conclusion reproducible.
8. While reviewing calibration performance, which review question is most useful for preventing
recurrence of a problem in investigation of unacceptable performance using reagent,
instrument, and operator evidence?
A. Who can be assigned responsibility so the issue can be closed quickly?
B. What condition or system weakness allowed the problem to occur, escape detection, or recur
despite existing controls?
C. How can the event description be shortened to reduce review time?
D. Which existing record can be copied to complete the investigation faster?
Answer: B
Rationale: Prevention focuses on the system conditions that allowed the problem to occur or
escape, not simply on assigning blame.
9. While investigating discordant results, how should a laboratory professional balance speed
and reliability when performing corrective action, verification with fresh controls, and prevention
of recurrence?
A. Prioritize speed whenever the task is routine, even if verification is reduced.
B. Use the most efficient approach that still preserves required controls, verification, traceability,
and acceptance criteria.
C. Use the most detailed possible process regardless of risk or relevance.
D. Defer documentation and verification whenever the schedule is under pressure.
, Answer: B
Rationale: Efficiency is appropriate only when the controls needed for reliable, traceable,
acceptable performance remain intact.
10. After a specimen integrity concern, what is the best way to use a checklist for unit, reference
interval, qualitative-category, and result-transcription accuracy?
A. Use the checklist only when a problem is suspected.
B. Verify each item against the governing criteria and document any deviation.
C. Rely on memory for routine items and use the checklist only for unusual cases.
D. Complete the checklist after releasing results to save time.
Answer: B
Rationale: A checklist is most effective when each item is verified against governing criteria and
deviations are documented.
11. What is the primary purpose of the SKML Feces-chemie external quality assessment (EQA)
scheme?
A. To replace internal quality control.
B. To test the qualitative and quantitative assays of analytes in feces.
C. To provide clinical diagnoses for patients.
D. To calibrate laboratory instruments.
Answer: B
Rationale: The SKML Feces-chemie scheme tests the qualitative and quantitative assays of
hemoglobin and other analytes in feces.
12. How many rounds of samples does the SKML Occult Blood in Feces scheme provide per
year?
A. 2 rounds of 4 samples
B. 4 rounds of 6 samples
C. 6 rounds of 4 samples
D. 12 rounds of 2 samples
Answer: B
Rationale: The Occult Blood in Feces scheme consists of 4 rounds of 6 samples per year.
Guide with Practice 300 Q&A – Exams of Nursing
SECTION 1: QUALITY ASSURANCE & ACCREDITATION (Questions 1–60)
1. During a reagent lot change, a laboratory professional is addressing internal controls, run
acceptance, and recognition of systematic or random error. The consequence of error could be
significant. What should be done FIRST?
A. Proceed using the usual method without rechecking the changed condition.
B. Record only the final outcome and omit the basis for the decision.
C. Rely on a single assumption because it worked in a previous situation.
D. Verify the applicable requirement, current condition, and acceptance criteria before acting.
Answer: D
Rationale: A sound first step is to establish the requirement and actual condition. That prevents
later actions from being built on an unverified assumption.
2. During external-quality sample processing, which review question is most useful for
preventing recurrence of a problem?
A. Who can be assigned responsibility so the issue can be closed quickly?
B. How can the event description be shortened to reduce review time?
C. Which existing record can be copied to complete the investigation faster?
D. What condition or system weakness allowed the problem to occur, escape detection, or recur
despite existing controls?
Answer: D
Rationale: Prevention focuses on the system conditions that allowed the problem to occur or
escape, not simply on assigning blame.
3. Before repeating a measurement, how should a laboratory professional balance speed and
reliability when performing peer-group, target-value, bias, z-score, or allowable-error
interpretation?
A. Prioritize speed whenever the task is routine, even if verification is reduced.
B. Use the most efficient approach that still preserves required controls, verification, traceability,
and acceptance criteria.
C. Use the most detailed possible process regardless of risk or relevance.
D. Defer documentation and verification whenever the schedule is under pressure.
,Answer: B
Rationale: Efficiency is appropriate only when the controls needed for reliable, traceable,
acceptable performance remain intact.
4. During sample receipt, how should uncertainty affecting peer-group, target-value, bias,
z-score, or allowable-error interpretation be handled?
A. Ignore uncertainty unless it has already caused a failure.
B. Identify the uncertainty, determine whether it could change the decision, obtain more
evidence where practical, and document any residual limitation.
C. Choose the most optimistic interpretation so the process can continue.
D. Convert the uncertainty into a fixed value without documentation.
Answer: B
Rationale: Uncertainty should be identified, evaluated for impact, and documented. This
ensures the integrity of the interpretation process.
5. During external-quality sample processing, which action best preserves traceability for
pre-analytical stability, transport, preparation, and sample-identity controls?
A. Keep only the final result because intermediate evidence may create confusion.
B. Use personal notes instead of the controlled record to save time.
C. Link the observation, source information, decision, action, and outcome so another
competent person can reconstruct what occurred.
D. Record the action without identifying the source information used for the decision.
Answer: C
Rationale: Traceability means the chain from evidence to decision to outcome can be
reconstructed and reviewed.
6. Before repeating a measurement, when should work involving method principle, calibration
model, analytical range, and interference risks be paused for escalation?
A. Only after a failure has caused a measurable loss.
B. Whenever a task takes longer than originally planned.
C. When the condition is outside authority, competence, acceptance criteria, or available
controls cannot keep the risk at an acceptable level.
D. Only when two supervisors are available to review the issue together.
Answer: C
,Rationale: Escalation is appropriate when the condition exceeds competence, authority, criteria,
or controllable risk — before harm or invalid output occurs.
7. While reviewing a reference interval, the expected outcome for measurand or analyte
definition, specimen matrix, and clinical purpose stated in the title is not achieved. What
troubleshooting method is strongest?
A. Confirm the observation, isolate likely variables systematically, test one change at a time, and
document results.
B. Replace multiple components or steps simultaneously without recording what changed.
C. Repeat the same action until an acceptable result appears.
D. Ignore intermittent evidence because it cannot be reproduced immediately.
Answer: A
Rationale: Systematic troubleshooting preserves cause-and-effect information and makes the
conclusion reproducible.
8. While reviewing calibration performance, which review question is most useful for preventing
recurrence of a problem in investigation of unacceptable performance using reagent,
instrument, and operator evidence?
A. Who can be assigned responsibility so the issue can be closed quickly?
B. What condition or system weakness allowed the problem to occur, escape detection, or recur
despite existing controls?
C. How can the event description be shortened to reduce review time?
D. Which existing record can be copied to complete the investigation faster?
Answer: B
Rationale: Prevention focuses on the system conditions that allowed the problem to occur or
escape, not simply on assigning blame.
9. While investigating discordant results, how should a laboratory professional balance speed
and reliability when performing corrective action, verification with fresh controls, and prevention
of recurrence?
A. Prioritize speed whenever the task is routine, even if verification is reduced.
B. Use the most efficient approach that still preserves required controls, verification, traceability,
and acceptance criteria.
C. Use the most detailed possible process regardless of risk or relevance.
D. Defer documentation and verification whenever the schedule is under pressure.
, Answer: B
Rationale: Efficiency is appropriate only when the controls needed for reliable, traceable,
acceptable performance remain intact.
10. After a specimen integrity concern, what is the best way to use a checklist for unit, reference
interval, qualitative-category, and result-transcription accuracy?
A. Use the checklist only when a problem is suspected.
B. Verify each item against the governing criteria and document any deviation.
C. Rely on memory for routine items and use the checklist only for unusual cases.
D. Complete the checklist after releasing results to save time.
Answer: B
Rationale: A checklist is most effective when each item is verified against governing criteria and
deviations are documented.
11. What is the primary purpose of the SKML Feces-chemie external quality assessment (EQA)
scheme?
A. To replace internal quality control.
B. To test the qualitative and quantitative assays of analytes in feces.
C. To provide clinical diagnoses for patients.
D. To calibrate laboratory instruments.
Answer: B
Rationale: The SKML Feces-chemie scheme tests the qualitative and quantitative assays of
hemoglobin and other analytes in feces.
12. How many rounds of samples does the SKML Occult Blood in Feces scheme provide per
year?
A. 2 rounds of 4 samples
B. 4 rounds of 6 samples
C. 6 rounds of 4 samples
D. 12 rounds of 2 samples
Answer: B
Rationale: The Occult Blood in Feces scheme consists of 4 rounds of 6 samples per year.
