CLC Advanced Professional Practice 3 — Questions and Answers
Question 1: When a laboratory consultant recommends a new laboratory information system (LIS), which factor should carry the greatest weight in the final selection decision?
- The vendor's national marketing presence
- Interface capability with existing instruments and the hospital's EHR (Correct answer)
- The lowest upfront licensing cost
- The number of years the vendor has been in business
Correct answer: Interface capability with existing instruments and the hospital's EHR
Seamless interfacing with current instruments and the EHR is critical to maintaining workflow continuity and data integrity.
Question 2: A laboratory consultant is asked to evaluate test utilization. Which approach is most effective for identifying overutilization of a specific test panel?
- Surveying nursing staff about ordering habits
- Analyzing ordering frequency stratified by ordering provider and clinical indication (Correct answer)
- Reviewing the laboratory's billing codes
- Comparing the lab's test menu to a competitor laboratory
Correct answer: Analyzing ordering frequency stratified by ordering provider and clinical indication
Provider-level ordering data linked to clinical indication reveals patterns of inappropriate or redundant test ordering most precisely.
Question 3: Which statistical tool is most appropriate for monitoring whether a laboratory process is in a state of statistical control over time?
- Scatter plot
- Histogram
- Control chart (Shewhart chart) (Correct answer)
- Pareto chart
Correct answer: Control chart (Shewhart chart)
Control charts plot process output over time against control limits, making them the standard tool for detecting special-cause variation.
Question 4: A CLC is asked to help a laboratory reduce turnaround time (TAT) for STAT testing. Which lean methodology tool would best identify non-value-added steps in the process?
- FMEA (Failure Mode and Effects Analysis)
- Value stream mapping (Correct answer)
- Root cause analysis (RCA)
- Fishbone diagram
Correct answer: Value stream mapping
Value stream mapping visually documents every step in a workflow, enabling identification and elimination of non-value-added steps.
Question 5: During a method validation study, a consultant finds that a new analyzer's bias compared to the reference method is 4.2% for a specific analyte. The allowable total error (TEa) is 6.0%. What should the consultant conclude?
- The bias exceeds TEa and the method should be rejected
- The bias alone consumes most of the TEa budget and combined with imprecision may exceed TEa (Correct answer)
- The method is acceptable because bias is below TEa
- Total error analysis is not relevant when bias is less than 10%
Correct answer: The bias alone consumes most of the TEa budget and combined with imprecision may exceed TEa
Total error includes both bias and imprecision; a 4.2% bias leaves little margin for imprecision within a 6.0% TEa, warranting further evaluation.
Question 6: A laboratory consultant is developing a business case for a new molecular testing service. Which financial analysis is essential to present to hospital administration?
- A list of competitor laboratories offering the test
- A break-even analysis including projected test volume, reimbursement, and operational costs (Correct answer)
- The clinical sensitivity and specificity of the test
- The number of peer-reviewed publications supporting the assay
Correct answer: A break-even analysis including projected test volume, reimbursement, and operational costs
A break-even analysis demonstrates the test volume needed to cover costs and generate a return, which is the core financial argument for administration.
Question 7: Which component of a formal laboratory audit is specifically designed to verify that written policies are being followed in day-to-day practice?
- Document review
- Competency assessment
- Direct observation of laboratory processes (Correct answer)
- Proficiency testing review
Correct answer: Direct observation of laboratory processes
Direct observation confirms whether actual practice matches documented procedures, bridging the gap between policy and performance.
CLC Advanced Professional Practice 3
When a laboratory consultant recommends a new laboratory information system (LIS), which factor should carry the greatest weight in the final selection decision?