CMLA REE CMLA Laboratory Safety & Procedures 3

Question 1

Which action is NOT acceptable when working in a laboratory with open flames?

Accepted Answer

Wearing loose-fitting synthetic clothing

Answer

Loose-fitting synthetic fabrics ignite easily and melt onto the skin, creating severe burn injuries near open flames.

Question 2

An eyewash station must be activated and flushed for how long during an eye chemical exposure?

Accepted Answer

15–20 minutes

Answer

ANSI Z358.1 requires continuous flushing of the eyes for a minimum of 15 minutes to adequately remove chemical contaminants.

Question 3

What is the purpose of a biological safety cabinet (BSC) Class II Type A2?

Accepted Answer

Protects personnel, product, and the environment

Answer

Class II Type A2 BSCs provide triple protection — personnel, product, and environment — through HEPA-filtered inflow and exhaust.

Question 4

Which waste stream is used for blood-soaked materials and cultures of infectious agents?

Accepted Answer

Regulated medical/biohazardous waste (red bag)

Answer

Blood-soaked materials and infectious cultures are regulated medical waste and must be placed in red biohazard bags for proper disposal.

Question 5

OSHA's Bloodborne Pathogen Standard requires that employers offer hepatitis B vaccination to at-risk employees:

Accepted Answer

Within 10 working days of initial assignment

Answer

OSHA 29 CFR 1910.1030 mandates that Hep B vaccination be offered within 10 working days of initial assignment to at-risk employees.

(CMLA) Certified Medical Laboratory Assistant Practice Test