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CER Review Questions and Answers
Latest 2026
Leak Testing should be performed: Ans: -After point-of-
use cleaning
-Before manual cleaning
-After every procedure
Early detection of endoscope damage can protect the
patient and: Ans: Reduce repair costs
Inadequate work space in the endoscope work area can
be a cause of: Ans: Endoscope damage
When should the high-level disinfectant solution in an
automated equipment reprocessor (AER) be tested for the
minimum effective concentration (MEC): Ans: Before each
use
All flexible endoscopes should have a ventilation adaptor
or water-resistant cap in place when undergoing ethylene
oxide sterilization. T/F Ans: False
Biological indicator monitoring is required for each cycle
run in: Ans: Ethylene Oxide
When using a rigid endoscope, a dark image may be
caused by damaged: Ans: -Illumination fibers
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-Coupler
-Camera
This endoscope is often used to treat kidney stones Ans:
Ureteroscope
Biofilm and fungus can form underneath fingernails. T/F
Ans: True
Endoscopes that have been high-level disinfected should
be stored on open wire shelving. T/F Ans: False. A
dedicated cabinet should be used to store flexible
endoscopes .
Low humidity in the work area can: Ans: Cause absorbent
materials to become excessively dry.
The process of rendering a clinically-used devise safe and
ready for reuse is the definition of: Ans: Reprocessing
When performing a leak test, the water-resistant cap
should be removed: T/F Ans: False. Always ensure that
the cap is fully "on" and "locked"
The four primary stains used for bacterial identification:
Ans: Gram (+-), Acid Fast, Endospore Stain, Capsule Stain
Decontamination Area controls: Ans: -Temp: 60-65F
-Humidity: 20-60%
-Airflow: 10 negative air flows
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Preparation / Disinfection Area controls: Ans: -Temp: 60-
73F
-Humidity: 20-60%
-Airflow: 10 positive air flows
Storage Area controls: Ans: -Temp: 60-75F
-Humidity: Above 20%
-Airflow: 4 positive air flows
Inadequate work space in the endoscope work area can
be a cause of: Ans: Endoscope damage
The AER should be placed in the decontamination area to
ensure the endoscopes are clean before sending them to
the preparation area. T/F Ans: False. They should be
located in a prep/disinfection area to reduce risks of
cross decontamination .
Detergents used to clean endoscopes should be: Ans: Non
foaming and free rinsing.
Enzymes will become ineffective in temperatures that
exceed: Ans: 140F
The most important source of information for
determining the proper chemicals to use for cleaning an
endoscope is the: Ans: Chemical Manufacturer's IFU
© 2025 All rights reserved
CER Review Questions and Answers
Latest 2026
Leak Testing should be performed: Ans: -After point-of-
use cleaning
-Before manual cleaning
-After every procedure
Early detection of endoscope damage can protect the
patient and: Ans: Reduce repair costs
Inadequate work space in the endoscope work area can
be a cause of: Ans: Endoscope damage
When should the high-level disinfectant solution in an
automated equipment reprocessor (AER) be tested for the
minimum effective concentration (MEC): Ans: Before each
use
All flexible endoscopes should have a ventilation adaptor
or water-resistant cap in place when undergoing ethylene
oxide sterilization. T/F Ans: False
Biological indicator monitoring is required for each cycle
run in: Ans: Ethylene Oxide
When using a rigid endoscope, a dark image may be
caused by damaged: Ans: -Illumination fibers
© 2025 All rights reserved
, 2 | Page
-Coupler
-Camera
This endoscope is often used to treat kidney stones Ans:
Ureteroscope
Biofilm and fungus can form underneath fingernails. T/F
Ans: True
Endoscopes that have been high-level disinfected should
be stored on open wire shelving. T/F Ans: False. A
dedicated cabinet should be used to store flexible
endoscopes .
Low humidity in the work area can: Ans: Cause absorbent
materials to become excessively dry.
The process of rendering a clinically-used devise safe and
ready for reuse is the definition of: Ans: Reprocessing
When performing a leak test, the water-resistant cap
should be removed: T/F Ans: False. Always ensure that
the cap is fully "on" and "locked"
The four primary stains used for bacterial identification:
Ans: Gram (+-), Acid Fast, Endospore Stain, Capsule Stain
Decontamination Area controls: Ans: -Temp: 60-65F
-Humidity: 20-60%
-Airflow: 10 negative air flows
© 2025 All rights reserved
, 3 | Page
Preparation / Disinfection Area controls: Ans: -Temp: 60-
73F
-Humidity: 20-60%
-Airflow: 10 positive air flows
Storage Area controls: Ans: -Temp: 60-75F
-Humidity: Above 20%
-Airflow: 4 positive air flows
Inadequate work space in the endoscope work area can
be a cause of: Ans: Endoscope damage
The AER should be placed in the decontamination area to
ensure the endoscopes are clean before sending them to
the preparation area. T/F Ans: False. They should be
located in a prep/disinfection area to reduce risks of
cross decontamination .
Detergents used to clean endoscopes should be: Ans: Non
foaming and free rinsing.
Enzymes will become ineffective in temperatures that
exceed: Ans: 140F
The most important source of information for
determining the proper chemicals to use for cleaning an
endoscope is the: Ans: Chemical Manufacturer's IFU
© 2025 All rights reserved
