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- Medical Laboratory Professionals Association of Ontario Laboratory Safety and Quality Questions and Answers Flashcards

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  1. According to CMLTO standards, which class of fire extinguisher is appropriate for electrical equipment fires in a medical laboratory?

    Answer: Class C

    Class C extinguishers are designed for electrical fires and use non-conductive agents, making them safe for use on energized electrical equipment found in laboratories.

  2. A medical laboratory technologist receives a specimen with a label discrepancy. What is the most appropriate first action?

    Answer: Contact the requesting clinician or unit to clarify and relabel

    Specimen label discrepancies must be resolved before processing. Contacting the source for clarification and proper relabeling ensures patient safety and result integrity.

  3. What is the purpose of a biological safety cabinet (BSC) Class II Type A2 in a medical laboratory?

    Answer: Protection of personnel, product, and environment from biohazardous aerosols

    A Class II Type A2 BSC provides triple protection: personnel protection, product protection, and environmental protection by recirculating and exhausting HEPA-filtered air.

  4. In a proficiency testing program, a laboratory's result falls outside the acceptable performance criteria. According to quality management principles, what is the required response?

    Answer: Investigate root cause, implement corrective action, and document findings

    Unacceptable proficiency testing results require formal root cause analysis, corrective action, and documentation as part of a quality management system.

  5. Which of the following is an example of a pre-analytical error in laboratory quality?

    Answer: Hemolysis due to improper venipuncture technique

    Pre-analytical errors occur before specimen analysis, including specimen collection issues such as hemolysis from poor venipuncture technique.

  6. Under WHMIS 2015 (GHS), what does a pictogram showing a flame over a circle represent?

    Answer: Oxidizing material

    The WHMIS 2015 flame over circle pictogram indicates oxidizing materials that can intensify fires or cause combustion of other materials.