2026 QLS Exam Prep: Laboratory Safety
Qualification Practice Questions, Answer
Rationales, Biosafety, Chemical Hazards, Risk
Assessment, Compliance & Laboratory
Management Study Guide
SECTION 1: MANAGEMENT (Questions 1–22)
1. A laboratory safety officer is conducting a risk assessment for a new chemistry
analyzer that uses a corrosive reagent. According to the hierarchy of controls,
which of the following is the most effective control measure?
A) Requiring personal protective equipment (PPE)
B) Elimination or substitution of the hazardous reagent
C) Administrative controls such as standard operating procedures
D) Engineering controls such as a chemical fume hood
Rationale: The hierarchy of controls, as defined by OSHA and NIOSH, ranks
control measures from most effective to least effective: Elimination, Substitution,
Engineering Controls, Administrative Controls, and PPE. Elimination (removing
the hazard entirely) and substitution (replacing the hazard with a less hazardous
alternative) are the most effective because they remove the hazard at its source.
PPE is the least effective because it relies on human behavior and correct use. The
Management domain comprises 18–22% of the QLS exam.
2. Which OSHA regulation establishes the General Duty Clause, requiring
employers to provide a workplace free from recognized hazards?
A) 29 CFR 1910.1030 (Bloodborne Pathogens)
B) Section 5(a)(1) of the OSH Act
C) 29 CFR 1910.1200 (Hazard Communication)
D) 29 CFR 1910.1450 (Laboratory Standard)
Rationale: The General Duty Clause, Section 5(a)(1) of the Occupational Safety
and Health Act, requires employers to provide a workplace free from recognized
,hazards that are causing or likely to cause death or serious physical harm. It is a
catch-all provision used when no specific OSHA standard applies. The Bloodborne
Pathogens Standard applies to occupational exposure to blood. The Hazard
Communication Standard addresses chemical labeling and SDS. The Laboratory
Standard addresses chemical hygiene plans.
3. A laboratory safety committee is reviewing its chemical hygiene plan (CHP).
Which of the following is a required element of a CHP under OSHA's Laboratory
Standard?
A) Standard operating procedures for work with hazardous chemicals
B) Employee salary information
C) Marketing plans
D) Equipment purchase records
Rationale: OSHA's Laboratory Standard (29 CFR 1910.1450) requires a Chemical
Hygiene Plan that includes standard operating procedures relevant to safety and
health for work with hazardous chemicals; criteria for determining and
implementing control measures; a requirement for fume hoods and other protective
equipment; employee information and training; and provisions for medical
consultation and examination. Salary, marketing, and purchase records are not
required elements.
4. A laboratory is developing a risk assessment process. What is the first step in
risk assessment?
A) Implementing controls to mitigate hazards
B) Identifying potential hazards in the workplace
C) Evaluating the effectiveness of controls
D) Documenting the risk assessment
Rationale: The risk assessment process begins with hazard identification—
identifying potential hazards (biological, chemical, physical, ergonomic) in the
workplace. This is followed by risk estimation and assessment, implementing
controls, and evaluating control effectiveness. Without identifying hazards first,
the remaining steps cannot be performed.
,5. Which of the following is an administrative control for laboratory safety?
A) Standard operating procedures and training
B) Chemical fume hood
C) Biosafety cabinet
D) Personal protective equipment
Rationale: Administrative controls are policies, procedures, and training that
reduce exposure to hazards by changing the way work is performed. Standard
operating procedures (SOPs) and training are examples. Chemical fume hoods and
biosafety cabinets are engineering controls. PPE is a separate control category
(least effective).
6. A laboratory is developing an emergency action plan. Which of the following is
a required element?
A) Procedures for reporting fires and other emergencies
B) Employee salary information
C) Marketing plans
D) Equipment purchase records
Rationale: OSHA's Emergency Action Plan standard (29 CFR 1910.38) requires
procedures for reporting fires and other emergencies; emergency escape
procedures and route assignments; procedures for employees who remain to
operate critical operations; accounting for all employees after evacuation; rescue
and medical duties; and names of persons to contact. Salary, marketing, and
purchase records are not required.
7. A laboratory safety officer is reviewing the facility's exposure control plan. How
often must the Exposure Control Plan be reviewed and updated under OSHA's
Bloodborne Pathogens Standard?
A) Every 6 months
B) Annually
C) Every 2 years
D) Every 5 years
, Rationale: OSHA's Bloodborne Pathogens Standard (29 CFR 1910.1030) requires
that the Exposure Control Plan be reviewed and updated at least annually and
whenever necessary to reflect new or modified tasks and procedures that affect
occupational exposure. The plan must be accessible to employees.
8. Which of the following is a key responsibility of a laboratory safety officer?
A) Conducting risk assessments and safety training
B) Performing patient testing
C) Managing laboratory finances
D) Marketing laboratory services
Rationale: The laboratory safety officer (or safety committee) is responsible for
conducting risk assessments, developing and implementing safety policies and
procedures, providing safety training, investigating incidents, and ensuring
regulatory compliance. Patient testing, finances, and marketing are separate
responsibilities.
9. A laboratory is implementing a medical surveillance program. Which of the
following is a key component?
A) Baseline and periodic health evaluations for employees with occupational
exposure
B) Employee salary information
C) Marketing plans
D) Equipment purchase records
Rationale: Medical surveillance programs include baseline health evaluations,
periodic examinations, and post-exposure follow-up for employees with
occupational exposure to hazardous agents (e.g., chemicals, bloodborne
pathogens). The program is designed to detect early signs of occupational illness
and prevent progression. Salary, marketing, and purchase records are not
components.
10. Which of the following is a requirement for employee safety training under
OSHA standards?
Qualification Practice Questions, Answer
Rationales, Biosafety, Chemical Hazards, Risk
Assessment, Compliance & Laboratory
Management Study Guide
SECTION 1: MANAGEMENT (Questions 1–22)
1. A laboratory safety officer is conducting a risk assessment for a new chemistry
analyzer that uses a corrosive reagent. According to the hierarchy of controls,
which of the following is the most effective control measure?
A) Requiring personal protective equipment (PPE)
B) Elimination or substitution of the hazardous reagent
C) Administrative controls such as standard operating procedures
D) Engineering controls such as a chemical fume hood
Rationale: The hierarchy of controls, as defined by OSHA and NIOSH, ranks
control measures from most effective to least effective: Elimination, Substitution,
Engineering Controls, Administrative Controls, and PPE. Elimination (removing
the hazard entirely) and substitution (replacing the hazard with a less hazardous
alternative) are the most effective because they remove the hazard at its source.
PPE is the least effective because it relies on human behavior and correct use. The
Management domain comprises 18–22% of the QLS exam.
2. Which OSHA regulation establishes the General Duty Clause, requiring
employers to provide a workplace free from recognized hazards?
A) 29 CFR 1910.1030 (Bloodborne Pathogens)
B) Section 5(a)(1) of the OSH Act
C) 29 CFR 1910.1200 (Hazard Communication)
D) 29 CFR 1910.1450 (Laboratory Standard)
Rationale: The General Duty Clause, Section 5(a)(1) of the Occupational Safety
and Health Act, requires employers to provide a workplace free from recognized
,hazards that are causing or likely to cause death or serious physical harm. It is a
catch-all provision used when no specific OSHA standard applies. The Bloodborne
Pathogens Standard applies to occupational exposure to blood. The Hazard
Communication Standard addresses chemical labeling and SDS. The Laboratory
Standard addresses chemical hygiene plans.
3. A laboratory safety committee is reviewing its chemical hygiene plan (CHP).
Which of the following is a required element of a CHP under OSHA's Laboratory
Standard?
A) Standard operating procedures for work with hazardous chemicals
B) Employee salary information
C) Marketing plans
D) Equipment purchase records
Rationale: OSHA's Laboratory Standard (29 CFR 1910.1450) requires a Chemical
Hygiene Plan that includes standard operating procedures relevant to safety and
health for work with hazardous chemicals; criteria for determining and
implementing control measures; a requirement for fume hoods and other protective
equipment; employee information and training; and provisions for medical
consultation and examination. Salary, marketing, and purchase records are not
required elements.
4. A laboratory is developing a risk assessment process. What is the first step in
risk assessment?
A) Implementing controls to mitigate hazards
B) Identifying potential hazards in the workplace
C) Evaluating the effectiveness of controls
D) Documenting the risk assessment
Rationale: The risk assessment process begins with hazard identification—
identifying potential hazards (biological, chemical, physical, ergonomic) in the
workplace. This is followed by risk estimation and assessment, implementing
controls, and evaluating control effectiveness. Without identifying hazards first,
the remaining steps cannot be performed.
,5. Which of the following is an administrative control for laboratory safety?
A) Standard operating procedures and training
B) Chemical fume hood
C) Biosafety cabinet
D) Personal protective equipment
Rationale: Administrative controls are policies, procedures, and training that
reduce exposure to hazards by changing the way work is performed. Standard
operating procedures (SOPs) and training are examples. Chemical fume hoods and
biosafety cabinets are engineering controls. PPE is a separate control category
(least effective).
6. A laboratory is developing an emergency action plan. Which of the following is
a required element?
A) Procedures for reporting fires and other emergencies
B) Employee salary information
C) Marketing plans
D) Equipment purchase records
Rationale: OSHA's Emergency Action Plan standard (29 CFR 1910.38) requires
procedures for reporting fires and other emergencies; emergency escape
procedures and route assignments; procedures for employees who remain to
operate critical operations; accounting for all employees after evacuation; rescue
and medical duties; and names of persons to contact. Salary, marketing, and
purchase records are not required.
7. A laboratory safety officer is reviewing the facility's exposure control plan. How
often must the Exposure Control Plan be reviewed and updated under OSHA's
Bloodborne Pathogens Standard?
A) Every 6 months
B) Annually
C) Every 2 years
D) Every 5 years
, Rationale: OSHA's Bloodborne Pathogens Standard (29 CFR 1910.1030) requires
that the Exposure Control Plan be reviewed and updated at least annually and
whenever necessary to reflect new or modified tasks and procedures that affect
occupational exposure. The plan must be accessible to employees.
8. Which of the following is a key responsibility of a laboratory safety officer?
A) Conducting risk assessments and safety training
B) Performing patient testing
C) Managing laboratory finances
D) Marketing laboratory services
Rationale: The laboratory safety officer (or safety committee) is responsible for
conducting risk assessments, developing and implementing safety policies and
procedures, providing safety training, investigating incidents, and ensuring
regulatory compliance. Patient testing, finances, and marketing are separate
responsibilities.
9. A laboratory is implementing a medical surveillance program. Which of the
following is a key component?
A) Baseline and periodic health evaluations for employees with occupational
exposure
B) Employee salary information
C) Marketing plans
D) Equipment purchase records
Rationale: Medical surveillance programs include baseline health evaluations,
periodic examinations, and post-exposure follow-up for employees with
occupational exposure to hazardous agents (e.g., chemicals, bloodborne
pathogens). The program is designed to detect early signs of occupational illness
and prevent progression. Salary, marketing, and purchase records are not
components.
10. Which of the following is a requirement for employee safety training under
OSHA standards?
