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This test covers core areas including cleaning, decontamination, sterilization, instrumentation, storage, distribution, and regulations.
Use this practice to assess your knowledge and identify areas to review further.
Good Luck!
Certified Registered Central Service Technician (CRCST) Test
Congratulations - you have completed Certified Registered Central Service Technician (CRCST) Test.You scored %%SCORE%% out of %%TOTAL%%.Your performance has been rated as %%RATING%%
Your answers are highlighted below.
Question 1 |
What is the primary purpose of decontamination?
To organize surgical instruments | |
To ensure instruments are properly stored | |
To remove bioburden from reusable medical devices | |
To test instrument functionality |
Question 2 |
What is the ideal temperature range for a decontamination area?
50–60°F | |
60–65°F | |
68–73°F | |
75–80°F |
Question 3 |
Which of the following is classified as a critical item?
Bedpan | |
Stethoscope | |
Surgical instrument | |
Blood pressure cuff |
Question 4 |
What type of water is recommended for the final rinse in the decontamination process?
Tap water | |
Distilled water | |
Hard water | |
Sterile water |
Question 5 |
Which chemical is commonly used for high-level disinfection?
Sodium hypochlorite | |
Glutaraldehyde | |
Hydrogen peroxide | |
Iodophor |
Question 6 |
What is the minimum exposure time for steam sterilization at 270°F (132°C) with a pre-vacuum cycle?
2 minutes | |
3 minutes | |
4 minutes | |
5 minutes |
Question 7 |
What does AAMI stand for?
Association for Advancement of Medical Instruments | |
Association of Automated Medical Industries | |
American Association for Medical Inspection | |
Association for Advancement of Machine Industry |
Question 8 |
Which of the following must be removed before placing an item in a washer-disinfector?
Instrument count sheet | |
All visible soil | |
Locking mechanisms | |
Instrument tape |
Question 9 |
The Bowie-Dick test is used to check what?
Instrument sharpness | |
Water hardness | |
Air removal efficiency in a vacuum sterilizer | |
Sterile storage conditions |
Question 10 |
What type of indicator reacts to more than one parameter of the sterilization cycle?
Type 1 | |
Type 2 | |
Type 3 | |
Type 5 |
Question 11 |
What does IFU stand for?
Instructions for Use | |
Internal Functioning Unit | |
Instrument Finalization Unit | |
Information for Utilization |
Question 12 |
Which of the following microorganisms is the hardest to kill?
Bacteria | |
Virus | |
Fungi | |
Bacterial spores |
Question 13 |
Which part of the instrument is most prone to corrosion if improperly dried?
Tips | |
Ratchets | |
Joints | |
Handles |
Question 14 |
The inventory system that issues items that were received first is called:
FIFO | |
LIFO | |
JIT | |
ABC |
Question 15 |
A Class II medical device requires what type of regulation?
General controls only | |
Premarket approval | |
Special controls | |
No regulation |
Question 16 |
What is the main function of enzymatic detergents?
To sanitize surfaces | |
To lubricate instruments | |
To remove organic material | |
To disinfect instruments |
Question 17 |
Which federal agency regulates sterilants and high-level disinfectants?
FDA | |
OSHA | |
EPA | |
CDC |
Question 18 |
How often should a biological indicator be used in steam sterilization?
Weekly | |
Monthly | |
Daily | |
Each load |
Question 19 |
What is the name of the standard developed by OSHA for worker safety?
Hazardous Waste Rule | |
Bloodborne Pathogens Standard | |
Infection Control Act | |
Safe Work Environment Rule |
Question 20 |
A hemostat is used to:
Retract tissue | |
Clamp blood vessels | |
Cut sutures | |
Hold sponges |
Question 21 |
Which cleaning tool is safest for lumened instruments?
Wire brush | |
Enzymatic spray | |
Soft-bristled brush | |
Steel wool |
Question 22 |
What is the shelf life of a sterilized item wrapped in nonwoven fabric and stored properly?
3 days | |
7 days | |
30 days | |
Event-related |
Question 23 |
What is the purpose of a drying cycle in sterilization?
To sterilize delicate instruments | |
To remove moisture | |
To test air removal | |
To reduce pressure |
Question 24 |
Which is NOT a type of sterilizer?
Steam | |
Ethylene oxide | |
Radiation | |
Ultraviolet |
Question 25 |
What does the term “point-of-use cleaning” mean?
Cleaning instruments after sterilization | |
Cleaning instruments in the OR immediately after use | |
Cleaning at the sterile storage area | |
Cleaning at the patient’s bedside |
Question 26 |
When should personal protective equipment (PPE) be worn?
Only when handling sharps | |
When performing inspections | |
During all decontamination processes | |
Only in sterile storage |
Question 27 |
The standard time for ethylene oxide aeration at 50°C is:
2 hours | |
8 hours | |
12 hours | |
24 hours |
Question 28 |
What is the best method to verify cleaning effectiveness?
Visual inspection | |
Check temperature | |
Residual protein test | |
Water rinse |
Question 29 |
What is the function of a sterilization integrator?
Measures temperature only | |
Measures pressure only | |
Verifies all critical parameters | |
Logs cycle times |
Question 30 |
What is the maximum load time for flash sterilization of unwrapped metal instruments?
2 minutes | |
3 minutes | |
4 minutes | |
5 minutes |
Question 31 |
What type of packaging is required for gas plasma sterilization?
Paper only | |
Cloth wraps | |
Non-cellulose-based material | |
Plastic bags |
Question 32 |
What is the purpose of the sterile field?
Enhance visibility | |
Provide a work area | |
Prevent contamination | |
Organize instruments |
Question 33 |
What must be done before sterilizing flexible endoscopes?
Wrap in nonwoven fabric | |
Soak in bleach | |
Leak test | |
Place in autoclave |
Question 34 |
The key to infection prevention is:
Disinfection | |
Communication | |
Hand hygiene | |
Proper lighting |
Question 35 |
What is the preferred method of sterilization for metal instruments?
Ethylene oxide | |
Steam | |
Dry heat | |
Radiation |
Question 36 |
How should heavy instruments be placed in trays?
On top | |
Near hinges | |
On bottom | |
Separately |
Question 37 |
Which of the following is NOT a sterilization monitoring method?
Administrative indicator | |
Mechanical indicator | |
Biological indicator | |
Chemical indicator |
Question 38 |
What is the preferred method to identify instruments?
Paint | |
Tape | |
Etching | |
Permanent marker |
Question 39 |
What does the term "bioburden" refer to?
Number of sterilizers | |
Load weight | |
Microbial load on instruments | |
Shelf life |
Question 40 |
What type of packaging is used in dry heat sterilization?
Polyethylene bags | |
Aluminum foil | |
Muslin wrap | |
Non-perforated containers |
Question 41 |
What is the role of the Joint Commission?
Equipment manufacturing | |
Infection reporting | |
Accreditation of healthcare organizations | |
Legal enforcement |
Question 42 |
Which sterilization method uses hydrogen peroxide vapor?
Steam | |
Dry heat | |
Gas plasma | |
Radiation |
Question 43 |
What tool is used to test the sharpness of scissors?
Tissue | |
Sharpness tester | |
Glove | |
Rubber tubing |
Question 44 |
Why are indicator tapes used?
To clean instruments | |
To label packages | |
To secure wraps and signal exposure | |
To monitor temperature |
Question 45 |
What is the maximum shelf life for an item in an event-related storage system?
30 days | |
60 days | |
90 days | |
Indefinite until compromised |
Question 46 |
Which government agency enforces safe working conditions?
CDC | |
OSHA | |
EPA | |
FDA |
Question 47 |
What is used to lubricate surgical instruments?
Water | |
Alcohol | |
Instrument milk | |
Saline |
Question 48 |
What kind of test is used to check the presence of residual soil?
Protein test | |
Bowie-Dick test | |
Pressure test | |
Leak test |
Question 49 |
How often should ultrasonic cleaners be drained and cleaned?
Daily | |
Weekly | |
Monthly | |
Every load |
Question 50 |
What is the purpose of tracking systems in sterile processing?
Inventory only | |
Infection prevention | |
Staff scheduling | |
Traceability and quality control |
Once you are finished, click the button below. Any items you have not completed will be marked incorrect.
There are 50 questions to complete.
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