MLS Safety & Infection Control 2

Question 1

A medical laboratory scientist receives a specimen with a broken tube and blood on the outside of the transport bag. What is the FIRST action to take?

Accepted Answer

Don gloves and other appropriate PPE before handling

Answer

PPE must be donned before handling any potentially contaminated specimen to protect against bloodborne pathogen exposure.

Question 2

Which OSHA standard specifically governs occupational exposure to bloodborne pathogens in the clinical laboratory?

Accepted Answer

29 CFR 1910.1030

Answer

29 CFR 1910.1030 is OSHA's Bloodborne Pathogens Standard, which requires exposure control plans and PPE for laboratory workers.

Question 3

When using a biosafety cabinet (BSC), a laboratory scientist should avoid placing materials near the front grille because:

Accepted Answer

It disrupts the inward airflow that protects the worker

Answer

The front grille maintains the inward airflow barrier that prevents aerosols from escaping the cabinet and protects the operator.

Question 4

A laboratory worker sustains a needlestick injury from a patient known to be HIV-positive. Which action should be taken FIRST?

Accepted Answer

Wash the wound thoroughly with soap and water

Answer

Immediate wound washing with soap and water is the first step to reduce the inoculum before any reporting or treatment.

Question 5

Which class of fire extinguisher is appropriate for electrical equipment fires in the laboratory?

Accepted Answer

Class C

Answer

Class C extinguishers use non-conductive agents and are rated for energized electrical equipment fires.

(MLS) Medical Laboratory Scientist Practice Test

(MLS) Medical Laboratory Scientist Practice Test

MLS Safety & Infection Control 2