REE CMLA Laboratory Safety & Procedures Flashcards
7 cards from real CMLA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 REE CMLA Laboratory Safety & Procedures flashcards as text
In the laboratory chain of custody for forensic or legal specimens, which step is most critical?
Answer: Continuous documentation of specimen handling from collection to reporting
Chain of custody requires unbroken documentation of every person who handles a specimen to maintain its integrity for legal purposes.
Which personal protective equipment (PPE) is required when handling specimens with potential aerosol generation?
Answer: Gloves, lab coat, and face shield or splash goggles
Aerosol-generating procedures require gloves, lab coat, and face/eye protection to prevent mucous membrane exposure.
Which is the correct order of donning (putting on) PPE before entering a patient isolation room?
Answer: Gown → Mask/Respirator → Goggles → Gloves
CDC recommends donning in the order: gown, mask/respirator, goggles/face shield, then gloves last to avoid contaminating other PPE.
According to OSHA, which document must be readily accessible to laboratory employees for every hazardous chemical in the workplace?
Answer: Safety Data Sheet (SDS)
OSHA's Hazard Communication Standard (29 CFR 1910.1200) requires Safety Data Sheets to be immediately accessible to employees for every hazardous chemical.
A newly received chemical reagent should be labeled with:
Answer: Expiration date and date received
Laboratories must add the date received and expiration date to chemical containers to track shelf life and ensure reagent validity.
What is the function of a fume hood's sash?
Answer: Acts as a physical barrier protecting the user from splashes and fumes
The sash serves as a physical barrier between the worker and chemical hazards, containing splashes and providing a shield during reactions.
In the event of a needlestick injury involving a potentially HIV-positive source, post-exposure prophylaxis (PEP) should ideally be started within:
Answer: 72 hours
PEP is most effective when initiated within 72 hours of exposure, though starting within 2 hours is ideal when feasible.