Part 1 CRCST exam readiness These questions are written to test judgment, workflow, and decision-making, not quick memorization.
01 Decontamination receives a tray that sat in the OR for several hours after the case. The instruments are visibly dry, and the next case is scheduled later that day. What is the best first action?A Begin mechanical washing so the set has enough time to complete sterilization before the next case. B Follow the IFU and facility process for instruments with dried soil before routine cleaning continues. C Document the delay, then continue processing if the instruments pass visual inspection after washing. D Notify the OR that the tray may be delayed, then prioritize the instruments needed for the next case.
02 A wrapped tray comes out of a steam load with the external indicator changed and the printout within parameters. During cooling, moisture is noticed on one edge of the wrapper. What is the most appropriate decision?A Treat the package as potentially compromised and follow the facility wet-pack process. B Allow the tray to finish cooling, then release it if the wrapper appears dry and intact. C Release the tray if the biological indicator result for the load is negative. D Move the tray to a low-traffic area and document that moisture was present during cooling.
03 During assembly, a technician sees brown discoloration on an instrument hinge. The instrument moves properly, and no loose debris is visible. What should the technician do next?A Return the instrument to decontamination because brown discoloration always means residual soil. B Continue assembly because function and lack of loose debris are the main release criteria. C Send the instrument for repair because discoloration means the passivation layer has failed. D Evaluate it according to facility policy and inspection criteria before deciding the next step.
04 A peel pouch is selected for a long instrument. The instrument fits only when placed diagonally, with the tip pressing close to the sealed edge. What is the main concern?A The internal indicator may not contact the instrument surface closely enough. B Package integrity and sterilant contact may be compromised by the tight fit. C The pouch should be double-pouched to reduce pressure on the outside seal. D The item should be sterilized on a longer cycle because the instrument is close to the edge.
05 A biological indicator from a steam load is positive. The physical monitors were acceptable, and some items from the load have already been distributed. What is the best next step?A Compare the load printout with the cycle record and recall only items with missing documentation. B Run another biological indicator before recall so the department can confirm the result. C Follow facility policy for recall, notification, documentation, and sterilizer investigation. D Hold future loads from that sterilizer and wait for user departments to report whether items were opened.
06 Decontamination receives a multi-level tray assembled. The IFU says the tray must be disassembled for manual cleaning before mechanical washing. The surgery schedule is tight. What is the most appropriate next step?A Disassemble the tray and complete the IFU-required cleaning steps before mechanical washing. B Notify the OR about timing, then use the washer cycle validated for instrument trays. C Document that the tray arrived assembled and inspect each level closely after washing. D Ask whether every level was opened during the case so unused levels can remain assembled.
07 During sterile storage rounds, a wrapped set has a small tear near one corner. The external indicator changed, the label is current, and the set is requested for a case beginning soon. What is the best response?A Cover the tear with approved tape, document the repair, and send the set for immediate use. B Call the OR to explain the concern and ask whether another sterile option is available. C Inspect the inner layer if double wrapped, then release the set if the inner wrap is intact. D Remove the set from sterile storage and send it for reprocessing according to facility policy.
08 A technician in decontamination says standard precautions are only necessary when blood is visible. Which response best explains why this is incorrect?A They are mainly required because instruments can become damaged during transport. B They are required only when a patient is known to have a communicable disease. C They protect staff because infectious material may be present even when it cannot be seen. D They replace the need for point-of-use treatment when contamination is not visible.
09 A rigid container is found in sterile storage with an intact lock but a missing filter. The load record appears complete. What is the best interpretation?A The container's sterile barrier may be compromised because a required component is missing. B The container can be used if the lock is intact and the load record is complete. C The filter should be replaced in storage before the container is released to the OR. D The container should be held until the biological indicator confirms the load passed.
10 A technician is unsure whether a device can be processed in the department's low-temperature sterilizer. What is the most appropriate next step?A Use the same low-temperature cycle that was selected the last time the device was processed. B Ask an experienced technician which cycle is usually used for similar devices. C Verify the device and sterilizer compatibility using the manufacturer's IFU. D Choose the shortest validated low-temperature cycle so the device is available sooner.
11 A flexible device was not kept moist after use and now has dried residue in a narrow channel. Why is this especially concerning during cleaning?A Dried residue proves the item is noncritical and should only receive low-level disinfection. B Microorganisms may form or remain in a protective polysaccharide matrix that resists removal. C Organic soil prevents the external indicator from changing during sterilization. D Dried residue means the device must be sterilized before any cleaning can begin.
12 A needed instrument is dropped before a procedure, and no sterile replacement is available. The team asks SPD to use immediate-use steam sterilization. What should guide the decision?A Use IUSS if the procedure is delayed and the surgeon confirms the item is urgently needed. B Use IUSS if the item has no lumens and can be transported directly to the sterile field. C Avoid IUSS unless a biological indicator can be read before the instrument is opened. D Follow facility policy and the IFU while completing all required cleaning and sterilization steps.
13 A tray's external indicator changed, but the internal chemical indicator did not show the expected result. The load printout is acceptable. What is the best response?A Do not release the tray; follow facility policy for an internal indicator failure. B Release the tray because the printout confirms the sterilizer reached the correct parameters. C Replace the internal indicator and release the tray if the external indicator changed correctly. D Hold the tray until the next load is complete, then release it if no other failures occur.
14 A sterile package has a current label and was processed two weeks ago. During handling, it falls onto a clean but wet counter. What should determine whether it remains usable?A The package remains usable because the label is current and the counter was clean. B The event and package condition should be evaluated according to facility policy. C The package can be dried and used if the external indicator remains unchanged. D The package should be opened and inspected before deciding whether to use the contents.