Histology Certification Laboratory Safety 3

Question 1

Which waste disposal container is correct for discarded xylene used during deparaffinization?

Accepted Answer

Labeled flammable liquid waste container

Answer

Xylene is a flammable, regulated chemical waste that must be collected in a labeled flammable liquid waste container for proper disposal.

Question 2

A histology technician notices a fellow employee is not wearing gloves while handling tissue specimens. The best immediate action is to:

Accepted Answer

Provide gloves and remind the employee of PPE policy immediately

Answer

Immediate intervention by providing PPE and a verbal reminder protects the employee and upholds lab safety culture without delay.

Question 3

Which GHS pictogram indicates a chemical that is an acute toxin (skull and crossbones)?

Accepted Answer

Skull and crossbones

Answer

The skull and crossbones GHS pictogram specifically denotes substances that are acutely toxic via oral, dermal, or inhalation routes.

Question 4

What is the purpose of a chemical hygiene plan (CHP) in a histology laboratory?

Accepted Answer

To outline procedures protecting employees from chemical hazards

Answer

OSHA's Laboratory Standard (29 CFR 1910.1450) requires a CHP that details measures to protect workers from hazardous chemical exposures.

Question 5

How should expired formalin fixative be disposed of in a U.S. histology laboratory?

Accepted Answer

Collect in a labeled hazardous waste container for licensed disposal

Answer

Formalin is a regulated hazardous waste requiring collection in properly labeled containers and pickup by a licensed hazardous waste contractor.

Histology Certification Practice Test