Practice Test Geeks(MLS) Medical Laboratory Scientist Practice Test
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Quality & Safety Flashcards

7 cards from real MLS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quality & Safety flashcards as text

  1. Which biosafety level (BSL) is required for work with Mycobacterium tuberculosis?

    Answer: BSL-3

    M. tuberculosis requires BSL-3 containment, including directional airflow, respiratory protection, and enhanced engineering controls due to airborne transmission risk.

  2. A laboratory wants to determine the 95% reference interval for serum albumin. What is the minimum number of healthy reference subjects recommended by CLSI guidelines?

    Answer: 120

    CLSI EP28-A3c recommends a minimum of 120 reference individuals to establish a statistically valid 95% reference interval using non-parametric methods.

  3. Which type of pipette is most accurate for delivering an exact volume in a quantitative laboratory procedure?

    Answer: Volumetric pipette

    Volumetric (transfer) pipettes are calibrated to deliver one specific volume with the highest accuracy, making them ideal for quantitative procedures.

  4. During a fire in the laboratory, the recommended evacuation mnemonic is RACE. What does the 'C' stand for?

    Answer: Contain the fire by closing doors

    In the RACE acronym (Rescue, Alarm, Contain, Evacuate/Extinguish), 'C' stands for Contain—closing doors to prevent fire and smoke spread.

  5. A new point-of-care glucose meter is being validated in the hospital. According to ISO 15197 standards, what percentage of results must fall within ±15 mg/dL of the reference at glucose <100 mg/dL?

    Answer: 95%

    ISO 15197:2013 requires 95% of results to be within ±15 mg/dL of the reference method for glucose concentrations below 100 mg/dL.

  6. A specimen is labeled 'category B biological substance' for shipping. Which packaging standard applies?

    Answer: UN3373 with P650 packaging instructions

    Category B biological substances are assigned UN3373 and must be shipped per IATA packaging instruction P650, which requires a triple-layered packaging system.

  7. Which of the following best describes the role of an internal quality control (IQC) in a laboratory?

    Answer: Monitors day-to-day analytical performance within the laboratory

    IQC uses control materials run in-house to continuously monitor analytical performance and detect errors before patient results are reported.