1|Page
CRCST PRACTICE TEST 2026|LATEST
CERTIFIED QUESTIONS WITH CORRECT
ANSWERS
Using more detergent than called for does not improve the cleaning action; in
fact, it can impede the process by leaving residuals behind that do not rinse off
and that will build up over time, causing instruments to? - correct-answer -bind
and/or corrode
Detergent solutions must be changed frequently to reduce the bioburden
(contamination) and to prevention of what to cleaned items and the
environment? - correct-answer -recontamination
Just as cleaning is the most important step in the decontamination process, what
is the most important step in the cleaning process because it removes loosened
soils and debris? - correct-answer -rinsing
For either manual or mechanical cleaning, the final rinse should be performed
with what type of water to prevent mineral deposits? - correct-answer -treated
What kind of bristle brushes are not generally recommended because they can
damage the protective layer of the surgical instruments? But these brushes can,
,2|Page
however be used on tungsten carbide jaws of needle holders, which are difficult
to clean because of - correct-answer -metal
To maintain accreditation and receive payments from insurance companies, a
healthcare facility must pass the __________________________. - correct-
answer -jc inspection
What kind of pads should not be used because they will scratch device surfaces,
providing places for bacteria and debris to collect and promoting corrosion? -
correct-answer -abrasive
What are not acceptable for use, because they harbor bacteria, cannot be easily
cleaned or disinfected, and break apart during use, leaving small particles in the
serrations of instruments? - correct-answer -sponges
To prevent the formations of __________________ all cleaning implements
should be regularly cleaned and disinfected or sterilized (at minimum at the end
of each shift). - correct-answer -biofilms
This is an automated cleaning equipment, that transmits sound waves through a
cleaning solution. - correct-answer -ultrasonic
, 3|Page
This mechanical action is called ___________________ it is very effective in
cleaning hard-to-reach areas such as box locks, serrations, ratchets, and the teeth
on instruments. - correct-answer -cavitation
This type of detergent has a pH level higher than 11. These detergents are the
most effective in removing heavy organic soils, but may accelerate the corrosion
of surgical instruments and may leave scale deposits on equipment - correct-
answer -highly alkaline
To reduce the potential of corrosion highly alkaline detergents are best used in a
multistep process: first the alkaline wash, then a ______________________, the a
regular rinse. - correct-answer -neutralizing acid rinse
What should not be placed over instruments? - correct-answer -bowls and emisis
basins
What type of chemicals are used to process endoscopes? This process allows
endoscopes for immediate reuse at the end of the process. - correct-answer -
high-level disinfectants
CRCST PRACTICE TEST 2026|LATEST
CERTIFIED QUESTIONS WITH CORRECT
ANSWERS
Using more detergent than called for does not improve the cleaning action; in
fact, it can impede the process by leaving residuals behind that do not rinse off
and that will build up over time, causing instruments to? - correct-answer -bind
and/or corrode
Detergent solutions must be changed frequently to reduce the bioburden
(contamination) and to prevention of what to cleaned items and the
environment? - correct-answer -recontamination
Just as cleaning is the most important step in the decontamination process, what
is the most important step in the cleaning process because it removes loosened
soils and debris? - correct-answer -rinsing
For either manual or mechanical cleaning, the final rinse should be performed
with what type of water to prevent mineral deposits? - correct-answer -treated
What kind of bristle brushes are not generally recommended because they can
damage the protective layer of the surgical instruments? But these brushes can,
,2|Page
however be used on tungsten carbide jaws of needle holders, which are difficult
to clean because of - correct-answer -metal
To maintain accreditation and receive payments from insurance companies, a
healthcare facility must pass the __________________________. - correct-
answer -jc inspection
What kind of pads should not be used because they will scratch device surfaces,
providing places for bacteria and debris to collect and promoting corrosion? -
correct-answer -abrasive
What are not acceptable for use, because they harbor bacteria, cannot be easily
cleaned or disinfected, and break apart during use, leaving small particles in the
serrations of instruments? - correct-answer -sponges
To prevent the formations of __________________ all cleaning implements
should be regularly cleaned and disinfected or sterilized (at minimum at the end
of each shift). - correct-answer -biofilms
This is an automated cleaning equipment, that transmits sound waves through a
cleaning solution. - correct-answer -ultrasonic
, 3|Page
This mechanical action is called ___________________ it is very effective in
cleaning hard-to-reach areas such as box locks, serrations, ratchets, and the teeth
on instruments. - correct-answer -cavitation
This type of detergent has a pH level higher than 11. These detergents are the
most effective in removing heavy organic soils, but may accelerate the corrosion
of surgical instruments and may leave scale deposits on equipment - correct-
answer -highly alkaline
To reduce the potential of corrosion highly alkaline detergents are best used in a
multistep process: first the alkaline wash, then a ______________________, the a
regular rinse. - correct-answer -neutralizing acid rinse
What should not be placed over instruments? - correct-answer -bowls and emisis
basins
What type of chemicals are used to process endoscopes? This process allows
endoscopes for immediate reuse at the end of the process. - correct-answer -
high-level disinfectants
