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Laboratory Safety and Quality Control Flashcards

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

Read the first 6 Laboratory Safety and Quality Control flashcards as text

  1. According to OSHA's Hazard Communication Standard, what must be present on all chemical containers in the histology laboratory?

    Answer: GHS-compliant labels with hazard pictograms, signal word, and hazard statements

    OSHA HazCom requires GHS-compliant labeling including pictograms, signal word (Danger/Warning), hazard statements, and precautionary statements on all chemical containers.

  2. What is the proper disposal method for used xylene in the histology laboratory?

    Answer: Collect in labeled hazardous waste containers for licensed disposal

    Xylene is a flammable, toxic solvent regulated as hazardous waste; it must be collected in properly labeled containers and disposed of by a licensed hazardous waste contractor.

  3. What class of fire extinguisher should be used for a solvent (xylene/alcohol) fire in the histology lab?

    Answer: Class B or BC (CO2 or dry chemical)

    Flammable liquid fires (Class B) require a CO2 or dry chemical extinguisher; water-based extinguishers spread flammable liquids and are contraindicated.

  4. What is the purpose of a Levey-Jennings chart in histology laboratory quality control?

    Answer: Visually monitor control values over time to detect trends and shifts

    Levey-Jennings charts plot control values over time against mean ± standard deviation limits, allowing visual detection of systematic errors, trends, and out-of-control situations.

  5. Which personal protective equipment (PPE) is required when handling formalin-fixed specimens in the histology laboratory?

    Answer: Gloves, lab coat, and eye protection at minimum

    Formalin is a known carcinogen and respiratory irritant; minimum PPE includes nitrile gloves, lab coat, and eye protection when handling formalin-fixed specimens.

  6. What does CAP (College of American Pathologists) accreditation require regarding staining controls?

    Answer: Each staining run must include appropriate positive and negative controls

    CAP accreditation mandates that each staining run includes appropriate positive and negative controls to verify stain performance before patient results are reported.