CRCST PRACTICE TEST 2026-2027 QUESTIONS
AND CORRECT ANSWERS GRADED A+
As defined by OSHA what is defined as "the use of physical or chemical means to
remove, inactivate or destroy blood borne pathogens on a surface or item to the
point where they are no longer capable of transmitting infectious particles and the
surface of
decontamination
A Sales Rep brings in a new Stryker Drill for Dr Bridwell to try during a total hip
procedure. What is the first step that should be taken?
Ask for written instructions.
The temperature in the decontamination department:
60°-65° F
Sharps in the decontamination department should be confined and contained in
what type of leak proof container?
impervious
,After thoroughly cleaning a contaminated item the most important step in the
decontamination process is to _____________ the item.
rinsed
Humidity level in a CS department should be kept at what percent?
30-60%
Instruments in the OR that are just opened but not used still have to go through the
decontam process, only when?
every time and always considered contaminated
What is the groups or collections of microorganisms that adhere to the surface of
any object that comes into contact with nonsterile water?
biofilms
What when used in small amounts is extremely corrosive to surgical instruments,
and it's use in the decontamination process is prohibited?
bleach
A pH level of 7 is considered?
neutral
,Instruments should never be stored _________________, and all instruments
should be sterilized as soon as possible after cleaning.
wet
The air pressure in the decontamination department should be what?
negative
How many air exchanges per hour is the decontamination department suppose to
have?
10
How often is the temperature and humidity levels suppose to be documented?
daily
What forms a protective slimy film on top of water and on instruments during the
decontamination process?
biofilms
A pH level of below 7 is considered?
acidic
, Items that have been presoaked or treated must be ____________ thoroughly
before further cleaning, because the presoaking or treatment agent may not be
compatible with the detergents used for cleaning.
rinsed
A pH level above 7 is considered?
alkaline
Biofilms adhere to all surfaces, but they form more slowly on smooth surfaces than
on rough surfaces. In healthcare settings, the items most affected by biofilms are
those with?
lumens, serrated surfaces, difficult-to-reach surfaces
What kind of detergents contain organic substances that assist in the breakdown of
protein soils and blood?
Enzymatic detergents
When using enzymatic detergents higher water temperatures are not to be used
because it will break down, or destroy, the enzymes, making them?
less efficient
AND CORRECT ANSWERS GRADED A+
As defined by OSHA what is defined as "the use of physical or chemical means to
remove, inactivate or destroy blood borne pathogens on a surface or item to the
point where they are no longer capable of transmitting infectious particles and the
surface of
decontamination
A Sales Rep brings in a new Stryker Drill for Dr Bridwell to try during a total hip
procedure. What is the first step that should be taken?
Ask for written instructions.
The temperature in the decontamination department:
60°-65° F
Sharps in the decontamination department should be confined and contained in
what type of leak proof container?
impervious
,After thoroughly cleaning a contaminated item the most important step in the
decontamination process is to _____________ the item.
rinsed
Humidity level in a CS department should be kept at what percent?
30-60%
Instruments in the OR that are just opened but not used still have to go through the
decontam process, only when?
every time and always considered contaminated
What is the groups or collections of microorganisms that adhere to the surface of
any object that comes into contact with nonsterile water?
biofilms
What when used in small amounts is extremely corrosive to surgical instruments,
and it's use in the decontamination process is prohibited?
bleach
A pH level of 7 is considered?
neutral
,Instruments should never be stored _________________, and all instruments
should be sterilized as soon as possible after cleaning.
wet
The air pressure in the decontamination department should be what?
negative
How many air exchanges per hour is the decontamination department suppose to
have?
10
How often is the temperature and humidity levels suppose to be documented?
daily
What forms a protective slimy film on top of water and on instruments during the
decontamination process?
biofilms
A pH level of below 7 is considered?
acidic
, Items that have been presoaked or treated must be ____________ thoroughly
before further cleaning, because the presoaking or treatment agent may not be
compatible with the detergents used for cleaning.
rinsed
A pH level above 7 is considered?
alkaline
Biofilms adhere to all surfaces, but they form more slowly on smooth surfaces than
on rough surfaces. In healthcare settings, the items most affected by biofilms are
those with?
lumens, serrated surfaces, difficult-to-reach surfaces
What kind of detergents contain organic substances that assist in the breakdown of
protein soils and blood?
Enzymatic detergents
When using enzymatic detergents higher water temperatures are not to be used
because it will break down, or destroy, the enzymes, making them?
less efficient
