Sterile Processing Technician (CSPDT) Certification Exam 2025–2026 |
245+ Real Practice Questions with Verified Answers & Detailed
Explanations | Central Sterile Prep Covering Instrument Cleaning,
Decontamination, Sterilization Cycles, Infection Control, Quality
Assurance & Hospital Compliance Standards
Question 1
What is the main purpose of sterilization in the healthcare setting?
• A) To clean instruments
• B) To eliminate all microorganisms (Correct)
• C) To disinfect surfaces
• D) To store medical supplies
Rationale: Sterilization is intended to eliminate all forms of microbial life, ensuring that
instruments and equipment are safe for surgical use.
Question 2
Which method of sterilization uses steam under pressure?
• A) Ethylene oxide
• B) Radiation
• C) Steam sterilization (Correct)
• D) Dry heat
Rationale: Steam sterilization, also known as autoclaving, uses moist heat under
pressure to kill microorganisms.
Question 3
What must be done before sterilization to ensure the effectiveness of the process?
• A) Packaging the items
• B) Cleaning and decontaminating the instruments (Correct)
• C) Storing them in a dry place
• D) Soaking them in water
Rationale: Cleaning and decontaminating instruments is a critical step before
sterilization to remove organic material that can prevent sterilization from occurring.
,Question 4
Which of the following is NOT a critical item in a sterile processing department?
• A) Surgical instruments
• B) Laminar flow hoods
• C) Personal protective equipment (PPE)
• D) Office furniture (Correct)
Rationale: Office furniture is not considered a critical item in a sterile processing
department; the focus is on equipment and materials directly related to patient care.
Question 5
What does the term "biological indicator" refer to in sterilization?
• A) A visual inspection tool
• B) A device used to monitor the sterilization process (Correct)
• C) A cleaning solution
• D) An instrument used for surgery
Rationale: A biological indicator is a tool containing viable microorganisms used to
verify that a sterilization process has been effective.
Question 6
What is the proper method for packaging sterile instruments?
• A) Plastic bags
• B) Sterile drapes
• C) Pouches that allow steam penetration (Correct)
• D) Simple cloth wraps
Rationale: Pouches designed for sterilization allow for steam penetration and are
essential for maintaining sterility during the process.
Question 7
Which of the following should be worn in a sterile processing department to
minimize contamination?
• A) Regular clothing
, • B) Open-toed shoes
• C) Personal protective equipment (PPE) (Correct)
• D) Makeup
Rationale: PPE is crucial in preventing contamination and protecting both the workers
and the instruments.
Question 8
What is considered the minimum temperature for steam sterilization?
• A) 100°F
• B) 250°F (Correct)
• C) 212°F
• D) 300°F
Rationale: The minimum temperature required for effective steam sterilization is
typically around 250°F (121°C).
Question 9
How often should biological indicators be used in a sterilization cycle?
• A) Daily
• B) Weekly
• C) At least once a day (Correct)
• D) Once a month
Rationale: Biological indicators should be used at least once a day to verify the
sterilization process.
Question 10
What is the primary disadvantage of using ethylene oxide for sterilization?
• A) It is slow
• B) It is highly flammable
• C) It requires aeration to remove toxic residues (Correct)
• D) It cannot sterilize delicate instruments
, Rationale: Ethylene oxide requires aeration to eliminate residual gas, making it a more
complex and time-consuming process.
Question 11
What type of sterilization is best for heat-sensitive instruments?
• A) Steam sterilization
• B) Ethylene oxide sterilization (Correct)
• C) Dry heat sterilization
• D) Chemical sterilization
Rationale: Ethylene oxide sterilization is suitable for heat-sensitive instruments, as it
does not require high temperatures.
Question 12
What is the purpose of a sterilization cycle's "holding time"?
• A) To prepare instruments
• B) To ensure the temperature is reached
• C) To allow adequate time for sterilization (Correct)
• D) To ventilate the chamber
Rationale: The holding time is essential to ensure that the items are exposed to the
sterilizing agent long enough to achieve effective sterilization.
Question 13
Which container is ideal for sterilizing delicate surgical instruments?
• A) Solid metal trays
• B) Wire mesh baskets
• C) Fabric pouches
• D) Perforated trays (Correct)
Rationale: Perforated trays allow for steam penetration and drainage, making them
ideal for sterilizing delicate instruments.
Question 14
245+ Real Practice Questions with Verified Answers & Detailed
Explanations | Central Sterile Prep Covering Instrument Cleaning,
Decontamination, Sterilization Cycles, Infection Control, Quality
Assurance & Hospital Compliance Standards
Question 1
What is the main purpose of sterilization in the healthcare setting?
• A) To clean instruments
• B) To eliminate all microorganisms (Correct)
• C) To disinfect surfaces
• D) To store medical supplies
Rationale: Sterilization is intended to eliminate all forms of microbial life, ensuring that
instruments and equipment are safe for surgical use.
Question 2
Which method of sterilization uses steam under pressure?
• A) Ethylene oxide
• B) Radiation
• C) Steam sterilization (Correct)
• D) Dry heat
Rationale: Steam sterilization, also known as autoclaving, uses moist heat under
pressure to kill microorganisms.
Question 3
What must be done before sterilization to ensure the effectiveness of the process?
• A) Packaging the items
• B) Cleaning and decontaminating the instruments (Correct)
• C) Storing them in a dry place
• D) Soaking them in water
Rationale: Cleaning and decontaminating instruments is a critical step before
sterilization to remove organic material that can prevent sterilization from occurring.
,Question 4
Which of the following is NOT a critical item in a sterile processing department?
• A) Surgical instruments
• B) Laminar flow hoods
• C) Personal protective equipment (PPE)
• D) Office furniture (Correct)
Rationale: Office furniture is not considered a critical item in a sterile processing
department; the focus is on equipment and materials directly related to patient care.
Question 5
What does the term "biological indicator" refer to in sterilization?
• A) A visual inspection tool
• B) A device used to monitor the sterilization process (Correct)
• C) A cleaning solution
• D) An instrument used for surgery
Rationale: A biological indicator is a tool containing viable microorganisms used to
verify that a sterilization process has been effective.
Question 6
What is the proper method for packaging sterile instruments?
• A) Plastic bags
• B) Sterile drapes
• C) Pouches that allow steam penetration (Correct)
• D) Simple cloth wraps
Rationale: Pouches designed for sterilization allow for steam penetration and are
essential for maintaining sterility during the process.
Question 7
Which of the following should be worn in a sterile processing department to
minimize contamination?
• A) Regular clothing
, • B) Open-toed shoes
• C) Personal protective equipment (PPE) (Correct)
• D) Makeup
Rationale: PPE is crucial in preventing contamination and protecting both the workers
and the instruments.
Question 8
What is considered the minimum temperature for steam sterilization?
• A) 100°F
• B) 250°F (Correct)
• C) 212°F
• D) 300°F
Rationale: The minimum temperature required for effective steam sterilization is
typically around 250°F (121°C).
Question 9
How often should biological indicators be used in a sterilization cycle?
• A) Daily
• B) Weekly
• C) At least once a day (Correct)
• D) Once a month
Rationale: Biological indicators should be used at least once a day to verify the
sterilization process.
Question 10
What is the primary disadvantage of using ethylene oxide for sterilization?
• A) It is slow
• B) It is highly flammable
• C) It requires aeration to remove toxic residues (Correct)
• D) It cannot sterilize delicate instruments
, Rationale: Ethylene oxide requires aeration to eliminate residual gas, making it a more
complex and time-consuming process.
Question 11
What type of sterilization is best for heat-sensitive instruments?
• A) Steam sterilization
• B) Ethylene oxide sterilization (Correct)
• C) Dry heat sterilization
• D) Chemical sterilization
Rationale: Ethylene oxide sterilization is suitable for heat-sensitive instruments, as it
does not require high temperatures.
Question 12
What is the purpose of a sterilization cycle's "holding time"?
• A) To prepare instruments
• B) To ensure the temperature is reached
• C) To allow adequate time for sterilization (Correct)
• D) To ventilate the chamber
Rationale: The holding time is essential to ensure that the items are exposed to the
sterilizing agent long enough to achieve effective sterilization.
Question 13
Which container is ideal for sterilizing delicate surgical instruments?
• A) Solid metal trays
• B) Wire mesh baskets
• C) Fabric pouches
• D) Perforated trays (Correct)
Rationale: Perforated trays allow for steam penetration and drainage, making them
ideal for sterilizing delicate instruments.
Question 14
