Preparation and Packaging for the CRCST Exam
Updated October 27, 2026
Preparation and Packaging is about a fifth of the CRCST exam. After cleaning, every instrument is inspected, tested and assembled, then packaged so the sterilant can reach it and it stays sterile until use. Here’s what to know, followed by free practice questions. Always follow the instrument’s and packaging’s instructions for use (IFU) and your department’s policies.
Inspection
- Inspect every instrument for cleanliness and damage, often with lighted magnification.
- Check function: hinges move smoothly, jaws and teeth line up, ratchets hold, and scissors cut as directed by the IFU.
- Test insulated instruments (such as laparoscopic instruments) for insulation damage, as your department requires.
- Remove damaged instruments from service and send them for repair.
Instrument care
- Lubricate with an instrument lubricant as the IFU directs.
- Avoid saline, which can cause pitting and corrosion.
- Spots and stains often point to water quality, detergent residue or rinsing problems.
Assembling sets
- Open hinged instruments and ratchets so the sterilant reaches all surfaces.
- Put heavier instruments on the bottom and protect sharp and delicate items.
- Disassemble instruments that come apart, as the IFU directs.
- Place a chemical indicator inside the set as your policy requires.
Packaging systems
| System | Key points |
|---|---|
| Wraps | Often two wraps, folded with an envelope or square fold, to create a barrier with a tortuous path |
| Peel pouches | Don’t overfill; label on the plastic side (or the area meant for writing), not on the paper |
| Rigid containers | Check filters, valves, gaskets and latches before each use |
Free practice questions
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Why should ratchets and hinges be left open when sets are assembled?Answer: AOpen ratchets and hinges let steam or other sterilants contact every surface, including the box locks.
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Where should information be written on a peel pouch?Answer: BWriting on the paper side can damage the barrier. Label on the plastic side or the designated area.
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Which solution should NOT be used to soak instruments because it can cause pitting?Answer: ASaline contains chlorides that can cause pitting and corrosion on stainless steel instruments.
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During inspection, an instrument's jaws don't line up. What should the technician do?Answer: CDamaged instruments can fail during surgery or harm the patient, so they're removed from service and sent for repair.
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Where should heavier instruments go when assembling a tray?Answer: DHeavier instruments go on the bottom so they don't damage lighter, delicate items.
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What should be checked on a rigid container before each use?Answer: BDamaged filters, gaskets, valves or latches can let the sterilant in improperly or break the sterile barrier.
Pass the CRCST exam on your first try
- All 207 questions on decontamination, disinfection, instruments, packaging, sterilization, storage, patient care equipment and professional skills
- An explanation for every answer, with the AAMI standard, CDC guideline or OSHA rule behind it
- Unlimited full 125-question practice exams, with each domain in its real share