Sterile Processing Technician Exam Prep – Real Practice Questions, Answers &
Detailed Rationales (Updated 2026) | Sterilization & Decontamination
Procedures, Surgical Instrument Identification, Infection Control & Aseptic
Technique, Packaging & Storage Standards, Autoclave Operations, Medical
Terminology, Central Sterile Processing Workflow, Patient Safety & CRCST/CSPDT
Certification Review
Question 1: Which environmental parameter is MOST critical to monitor in the
sterile storage area to maintain package integrity?
A. Ambient noise level
B. Relative humidity and temperature
C. Lighting intensity
D. Floor surface material
CORRECT ANSWER: B. Relative humidity and temperature
Rationale: According to ASHRAE guidelines and HSPA standards, sterile storage areas
must maintain controlled temperature and humidity to prevent moisture migration into
packages, which can compromise sterility. Excessive humidity can cause wicking of
contaminants through packaging materials, while temperature fluctuations may affect
chemical indicator performance and package seal integrity.
myhspa.org
Question 2: When a chemical spill occurs in the decontamination area, what is the
FIRST action a sterile processing technician should take?
A. Notify the supervisor immediately
B. Evacuate all personnel from the area
C. Consult the Safety Data Sheet (SDS) for the specific chemical
D. Don appropriate Personal Protective Equipment (PPE) before approaching the spill
CORRECT ANSWER: D. Don appropriate Personal Protective Equipment (PPE)
before approaching the spill
Rationale: OSHA Bloodborne Pathogens and Hazard Communication Standards require
personnel to protect themselves first before addressing hazardous spills. Donning
appropriate PPE (gloves, gown, eye protection, face shield) prevents exposure to
chemicals or biohazards. Only after proper protection should the technician consult the
SDS and initiate spill protocol.
myhspa.org
Question 3: Which of the following best describes the purpose of a one-way
workflow in a sterile processing department?
A. To maximize employee efficiency during peak hours
B. To prevent cross-contamination between soiled and clean areas
C. To reduce the number of staff required per shift
D. To simplify inventory tracking systems
,CORRECT ANSWER: B. To prevent cross-contamination between soiled and clean
areas
Rationale: A one-way workflow ensures that soiled instruments move from
decontamination through preparation, sterilization, and sterile storage without
backtracking. This unidirectional flow is a fundamental infection control principle that
minimizes the risk of recontaminating processed items by preventing contact between
contaminated and sterile environments.
myhspa.org
Question 4: According to ANSI/AAMI standards, what is the MINIMUM
recommended air exchange rate per hour for the decontamination area?
A. 5 air exchanges per hour
B. 10 air exchanges per hour
C. 15 air exchanges per hour
D. 20 air exchanges per hour
CORRECT ANSWER: B. 10 air exchanges per hour
Rationale: ANSI/AAMI ST79 recommends a minimum of 10 air exchanges per hour in the
decontamination area to effectively remove airborne contaminants, chemical vapors,
and aerosols generated during cleaning processes. This ventilation standard helps
protect personnel and maintain environmental control.
myhspa.org
Question 5: Which documentation is LEGALLY required to be retained for
sterilization load records according to CMS and Joint Commission standards?
A. Employee break schedules
B. Biological monitoring results and load control numbers
C. Vendor contact information for instrument manufacturers
D. Monthly utility bills for the sterile processing department
CORRECT ANSWER: B. Biological monitoring results and load control numbers
Rationale: Regulatory agencies require retention of sterilization records, including
biological indicator results, chemical indicator readings, load control (lot) numbers, and
cycle parameters. These documents provide traceability for patient safety, support
recall procedures, and demonstrate compliance during accreditation surveys.
Retention periods typically range from 3-7 years depending on state regulations.
myhspa.org
Question 6: What is the PRIMARY rationale for implementing a Quality Assurance
program in sterile processing?
A. To reduce departmental operating costs
B. To ensure consistent compliance with standards and improve patient safety
,outcomes
C. To increase the number of instruments processed per hour
D. To simplify staff training requirements
CORRECT ANSWER: B. To ensure consistent compliance with standards and
improve patient safety outcomes
Rationale: Quality Assurance (QA) programs systematically monitor processes like tray
audits, sterilization validation, and instrument functionality to identify deviations,
implement corrective actions, and prevent errors. The ultimate goal is to ensure that
every instrument released to patient care is safe, functional, and sterile, thereby
reducing surgical site infections and adverse events.
myhspa.org
Question 7: Which of the following attire choices is PROHIBITED for personnel
working in the sterile processing department according to AORN guidelines?
A. Scrub tops with short sleeves
B. Closed-toe, non-slip footwear
C. Artificial nails or nail extenders
D. Hair covers that fully contain hair
CORRECT ANSWER: C. Artificial nails or nail extenders
Rationale: AORN and CDC guidelines prohibit artificial nails, nail extenders, and
chipped nail polish for healthcare personnel who have direct contact with patients or
sterile instruments. These items harbor microorganisms, interfere with proper hand
hygiene, and increase the risk of transmitting pathogens. Natural nails should be kept
short and clean.
myhspa.org
Question 8: When transporting soiled instruments from the operating room to
decontamination, which practice BEST minimizes the risk of exposure to
bloodborne pathogens?
A. Carrying instruments in an open basin for quick transfer
B. Using a closed, leak-proof, labeled container with biohazard labeling
C. Wrapping instruments in a clean linen towel
D. Placing instruments directly on a cart without containment
CORRECT ANSWER: B. Using a closed, leak-proof, labeled container with biohazard
labeling
Rationale: OSHA Bloodborne Pathogens Standard requires that contaminated sharps
and items be transported in puncture-resistant, leak-proof, labeled containers to
prevent exposure during transit. Closed containment prevents aerosolization, spillage,
and accidental contact with contaminated surfaces or personnel.
, myhspa.org
Question 9: Which regulatory agency is PRIMARILY responsible for approving
sterilization methods and monitoring devices used in healthcare facilities in the
United States?
A. Centers for Disease Control and Prevention (CDC)
B. Occupational Safety and Health Administration (OSHA)
C. Food and Drug Administration (FDA)
D. The Joint Commission (TJC)
CORRECT ANSWER: C. Food and Drug Administration (FDA)
Rationale: The FDA regulates medical devices, including sterilizers, chemical
indicators, biological indicators, and sterilization processes, under the Federal Food,
Drug, and Cosmetic Act. Manufacturers must obtain FDA clearance or approval before
marketing sterilization products, ensuring they meet safety and efficacy standards.
myhspa.org
Question 10: What is the CORRECT procedure when a sterile processing technician
discovers a damaged instrument during inspection?
A. Place the instrument in the tray and note the damage on the count sheet
B. Remove the instrument from the set, document the damage, and send for repair or
replacement
C. Attempt to repair the instrument using department tools before packaging
D. Discard the instrument immediately in regular trash
CORRECT ANSWER: B. Remove the instrument from the set, document the
damage, and send for repair or replacement
Rationale: Damaged instruments can compromise surgical procedures, cause patient
injury, or fail during sterilization. The proper protocol is to remove the item from the set,
document the deficiency per department policy, and route it through the appropriate
repair or replacement channel. This ensures instrument functionality and patient safety.
myhspa.org
Question 11: Which level of the Spaulding Classification applies to surgical
instruments that contact sterile tissue or the vascular system?
A. Non-critical
B. Semi-critical
C. Critical
D. Intermediate
CORRECT ANSWER: C. Critical
Rationale: The Spaulding Classification categorizes medical devices based on infection
risk. Critical items (e.g., surgical instruments, implants) contact sterile tissue or blood
Detailed Rationales (Updated 2026) | Sterilization & Decontamination
Procedures, Surgical Instrument Identification, Infection Control & Aseptic
Technique, Packaging & Storage Standards, Autoclave Operations, Medical
Terminology, Central Sterile Processing Workflow, Patient Safety & CRCST/CSPDT
Certification Review
Question 1: Which environmental parameter is MOST critical to monitor in the
sterile storage area to maintain package integrity?
A. Ambient noise level
B. Relative humidity and temperature
C. Lighting intensity
D. Floor surface material
CORRECT ANSWER: B. Relative humidity and temperature
Rationale: According to ASHRAE guidelines and HSPA standards, sterile storage areas
must maintain controlled temperature and humidity to prevent moisture migration into
packages, which can compromise sterility. Excessive humidity can cause wicking of
contaminants through packaging materials, while temperature fluctuations may affect
chemical indicator performance and package seal integrity.
myhspa.org
Question 2: When a chemical spill occurs in the decontamination area, what is the
FIRST action a sterile processing technician should take?
A. Notify the supervisor immediately
B. Evacuate all personnel from the area
C. Consult the Safety Data Sheet (SDS) for the specific chemical
D. Don appropriate Personal Protective Equipment (PPE) before approaching the spill
CORRECT ANSWER: D. Don appropriate Personal Protective Equipment (PPE)
before approaching the spill
Rationale: OSHA Bloodborne Pathogens and Hazard Communication Standards require
personnel to protect themselves first before addressing hazardous spills. Donning
appropriate PPE (gloves, gown, eye protection, face shield) prevents exposure to
chemicals or biohazards. Only after proper protection should the technician consult the
SDS and initiate spill protocol.
myhspa.org
Question 3: Which of the following best describes the purpose of a one-way
workflow in a sterile processing department?
A. To maximize employee efficiency during peak hours
B. To prevent cross-contamination between soiled and clean areas
C. To reduce the number of staff required per shift
D. To simplify inventory tracking systems
,CORRECT ANSWER: B. To prevent cross-contamination between soiled and clean
areas
Rationale: A one-way workflow ensures that soiled instruments move from
decontamination through preparation, sterilization, and sterile storage without
backtracking. This unidirectional flow is a fundamental infection control principle that
minimizes the risk of recontaminating processed items by preventing contact between
contaminated and sterile environments.
myhspa.org
Question 4: According to ANSI/AAMI standards, what is the MINIMUM
recommended air exchange rate per hour for the decontamination area?
A. 5 air exchanges per hour
B. 10 air exchanges per hour
C. 15 air exchanges per hour
D. 20 air exchanges per hour
CORRECT ANSWER: B. 10 air exchanges per hour
Rationale: ANSI/AAMI ST79 recommends a minimum of 10 air exchanges per hour in the
decontamination area to effectively remove airborne contaminants, chemical vapors,
and aerosols generated during cleaning processes. This ventilation standard helps
protect personnel and maintain environmental control.
myhspa.org
Question 5: Which documentation is LEGALLY required to be retained for
sterilization load records according to CMS and Joint Commission standards?
A. Employee break schedules
B. Biological monitoring results and load control numbers
C. Vendor contact information for instrument manufacturers
D. Monthly utility bills for the sterile processing department
CORRECT ANSWER: B. Biological monitoring results and load control numbers
Rationale: Regulatory agencies require retention of sterilization records, including
biological indicator results, chemical indicator readings, load control (lot) numbers, and
cycle parameters. These documents provide traceability for patient safety, support
recall procedures, and demonstrate compliance during accreditation surveys.
Retention periods typically range from 3-7 years depending on state regulations.
myhspa.org
Question 6: What is the PRIMARY rationale for implementing a Quality Assurance
program in sterile processing?
A. To reduce departmental operating costs
B. To ensure consistent compliance with standards and improve patient safety
,outcomes
C. To increase the number of instruments processed per hour
D. To simplify staff training requirements
CORRECT ANSWER: B. To ensure consistent compliance with standards and
improve patient safety outcomes
Rationale: Quality Assurance (QA) programs systematically monitor processes like tray
audits, sterilization validation, and instrument functionality to identify deviations,
implement corrective actions, and prevent errors. The ultimate goal is to ensure that
every instrument released to patient care is safe, functional, and sterile, thereby
reducing surgical site infections and adverse events.
myhspa.org
Question 7: Which of the following attire choices is PROHIBITED for personnel
working in the sterile processing department according to AORN guidelines?
A. Scrub tops with short sleeves
B. Closed-toe, non-slip footwear
C. Artificial nails or nail extenders
D. Hair covers that fully contain hair
CORRECT ANSWER: C. Artificial nails or nail extenders
Rationale: AORN and CDC guidelines prohibit artificial nails, nail extenders, and
chipped nail polish for healthcare personnel who have direct contact with patients or
sterile instruments. These items harbor microorganisms, interfere with proper hand
hygiene, and increase the risk of transmitting pathogens. Natural nails should be kept
short and clean.
myhspa.org
Question 8: When transporting soiled instruments from the operating room to
decontamination, which practice BEST minimizes the risk of exposure to
bloodborne pathogens?
A. Carrying instruments in an open basin for quick transfer
B. Using a closed, leak-proof, labeled container with biohazard labeling
C. Wrapping instruments in a clean linen towel
D. Placing instruments directly on a cart without containment
CORRECT ANSWER: B. Using a closed, leak-proof, labeled container with biohazard
labeling
Rationale: OSHA Bloodborne Pathogens Standard requires that contaminated sharps
and items be transported in puncture-resistant, leak-proof, labeled containers to
prevent exposure during transit. Closed containment prevents aerosolization, spillage,
and accidental contact with contaminated surfaces or personnel.
, myhspa.org
Question 9: Which regulatory agency is PRIMARILY responsible for approving
sterilization methods and monitoring devices used in healthcare facilities in the
United States?
A. Centers for Disease Control and Prevention (CDC)
B. Occupational Safety and Health Administration (OSHA)
C. Food and Drug Administration (FDA)
D. The Joint Commission (TJC)
CORRECT ANSWER: C. Food and Drug Administration (FDA)
Rationale: The FDA regulates medical devices, including sterilizers, chemical
indicators, biological indicators, and sterilization processes, under the Federal Food,
Drug, and Cosmetic Act. Manufacturers must obtain FDA clearance or approval before
marketing sterilization products, ensuring they meet safety and efficacy standards.
myhspa.org
Question 10: What is the CORRECT procedure when a sterile processing technician
discovers a damaged instrument during inspection?
A. Place the instrument in the tray and note the damage on the count sheet
B. Remove the instrument from the set, document the damage, and send for repair or
replacement
C. Attempt to repair the instrument using department tools before packaging
D. Discard the instrument immediately in regular trash
CORRECT ANSWER: B. Remove the instrument from the set, document the
damage, and send for repair or replacement
Rationale: Damaged instruments can compromise surgical procedures, cause patient
injury, or fail during sterilization. The proper protocol is to remove the item from the set,
document the deficiency per department policy, and route it through the appropriate
repair or replacement channel. This ensures instrument functionality and patient safety.
myhspa.org
Question 11: Which level of the Spaulding Classification applies to surgical
instruments that contact sterile tissue or the vascular system?
A. Non-critical
B. Semi-critical
C. Critical
D. Intermediate
CORRECT ANSWER: C. Critical
Rationale: The Spaulding Classification categorizes medical devices based on infection
risk. Critical items (e.g., surgical instruments, implants) contact sterile tissue or blood
