CLIA Safety & Risk Management in Clinical Labs 3 — Questions and Answers
Question 1: A CLIA-certified laboratory must perform a risk assessment when implementing a new test system. Which element is MOST critical to include in this assessment?
- The cost per reportable result
- Identification of failure modes and their potential impact on patient safety (Correct answer)
- The vendor's marketing materials
- Staff preferences for the new instrument
Correct answer: Identification of failure modes and their potential impact on patient safety
Risk assessment must identify potential failure modes and evaluate their probability and severity of impact on patient safety per quality management principles.
Question 2: Under CLIA regulations, what is the minimum frequency required for calibration verification of a quantitative test?
- Every 6 months or when specific triggering events occur (Correct answer)
- Every 30 days
- Daily before patient testing
- Only when purchasing a new reagent lot
Correct answer: Every 6 months or when specific triggering events occur
CLIA requires calibration verification at least every 6 months and whenever specific events occur such as major maintenance, reagent lot changes, or after QC failures.
Question 3: A laboratory fire involving a compressed gas cylinder requires which specific action BEFORE evacuation?
- Attempt to extinguish the fire with a CO2 extinguisher aimed at the cylinder
- Close the cylinder valve if safely accessible and evacuate (Correct answer)
- Cool the cylinder with water from a safe distance before leaving
- Leave the cylinder and pull the nearest fire alarm
Correct answer: Close the cylinder valve if safely accessible and evacuate
If safely accessible, closing the cylinder valve to cut off the fuel source is recommended before evacuation to prevent fire spread.
Question 4: Which CLIA-mandated document describes the step-by-step procedures a laboratory uses to perform each test, including specimen requirements and reference ranges?
- The laboratory's CLIA certificate application
- The procedure manual (Correct answer)
- The quality assessment plan
- The personnel qualification file
Correct answer: The procedure manual
CLIA requires a comprehensive procedure manual with detailed instructions for each test, including specimen collection, reagents, calibration, QC, and reference ranges.
Question 5: During a power outage, a laboratory's backup generator fails. Which specimen type is at GREATEST immediate risk of preanalytical degradation?
- Dried blood spot cards stored at room temperature
- Refrigerated blood samples awaiting CBC analysis (Correct answer)
- Formalin-fixed tissue blocks in storage
- Archived serum samples frozen at -80°C
Correct answer: Refrigerated blood samples awaiting CBC analysis
Refrigerated blood samples for CBCs are at greatest immediate risk because cell morphology and counts deteriorate rapidly at room temperature without refrigeration.
Question 6: The 'Swiss Cheese Model' of accident causation is used in laboratory risk management to illustrate that:
- A single safeguard is sufficient to prevent all errors
- Accidents occur when multiple layers of defense each have gaps that align (Correct answer)
- QC failures always indicate instrument malfunction
- Laboratory errors are random and unpredictable events
Correct answer: Accidents occur when multiple layers of defense each have gaps that align
The Swiss Cheese Model demonstrates that accidents happen when the 'holes' (failures) in multiple defensive layers align simultaneously, allowing harm to pass through.
Question 7: A laboratory's chemical hygiene plan must specifically address which of the following for particularly hazardous substances (PHS)?
- Employee health insurance requirements
- Designated areas, containment devices, decontamination procedures, and disposal (Correct answer)
- Annual salary reviews for lab staff handling PHS
- Marketing restrictions on PHS-based test results
Correct answer: Designated areas, containment devices, decontamination procedures, and disposal
OSHA's Lab Standard requires the Chemical Hygiene Plan to include specific provisions for PHS including designated work areas, containment, decontamination, and proper disposal.
CLIA Safety & Risk Management in Clinical Labs 3
A CLIA-certified laboratory must perform a risk assessment when implementing a new test system.
Which element is MOST critical to include in this assessment?