Preparation and Packaging is 21% of the scored CRCST exam. Answer 10 exam style questions on instrument inspection and function testing and see exactly which concepts would cost you points on test day.
Start the 10 questions →A technician needs to test the sharpness of a 7 inch Mayo scissors and a 4 inch iris scissors. Which approach is correct?
These questions cover scissors sharpness test, scissors test failure, needle holder test, ratchet test and jaw alignment. Each one shows the correct answer and why every other option is wrong, so a miss tells you exactly what to review before the CRCST.
Prefer to read first? Every question from the practice set above, with the correct answer and why each wrong option is wrong.
Answer: C. Scissors are tested with commercial test material rated for the scissor size. Scissors 4.5 inches or shorter are commonly tested with a lighter, thinner material and longer scissors with a heavier one, so each pair is challenged appropriately without damage. The test material manufacturer's size guidance is followed.
Why not A: Gauze is not a standardized test material and its fibers snag, giving an unreliable result.
Why not B: Paper towels are not standardized and do not reflect cutting performance on tissue.
Why not D: All scissors are sharpness tested in SPD before packaging, regardless of size.
Exam tactic: Small scissors, light test material. Big scissors, heavier material.
Answer: D. Scissors must cut cleanly all the way through to the tips. Snagging, folding or chewing of the test material means the blades are dull or misaligned, so the scissors are removed, tagged and sent to a qualified repair service.
Why not A: Tips are used for fine dissection, so a failure at the tips is a failure of the instrument.
Why not B: Adjusting pivot screws is a repair task for a qualified service, not SPD staff.
Why not C: Lubricant does not restore a cutting edge, and a known defective instrument must not be packaged.
Exam tactic: Cut cleanly to the very tip or it goes to repair.
Answer: A. To test grip, a suture needle of appropriate size is clamped in the jaws and the instrument is locked to the second ratchet. If the needle can be turned easily by hand, the jaws are worn and the needle holder is sent for repair.
Why not B: Gauze does not show whether the jaws will hold a needle steady during suturing.
Why not C: A light check is not the grip test for needle holders and does not show needle slippage.
Why not D: Tapping the closed instrument checks the ratchet, not whether the jaws hold a needle.
Exam tactic: Needle in, second click, try to twist. It turns = repair.
Answer: B. For the ratchet test, the instrument is closed on the first ratchet tooth, held by the box lock, and the ratchet portion is tapped lightly against a solid surface. If the instrument springs open, the ratchet is worn and the instrument goes to repair.
Why not A: Forcing the handles apart damages the instrument and is not a standardized test.
Why not C: Instruments are not stored or sterilized locked, because closed ratchets stress the metal and can cause cracks.
Why not D: Clicking sounds do not show whether the ratchet holds under light force.
Exam tactic: First click, hold the box lock, tap. Pops open = repair.
Answer: C. When a hemostat closes, the jaws should meet evenly, the tips should align and the serrations should mesh. Overlapping or scissoring tips mean the instrument is misaligned, so it is removed and sent for repair.
Why not A: SPD staff do not bend or adjust instruments. Doing so can crack the metal.
Why not B: Misaligned jaws do not clamp securely and can damage tissue or slip off a vessel.
Why not D: Marking a defective instrument still sends it to the OR. It must come out of the set.
Exam tactic: Tips meet, teeth mesh, or it goes to repair.
Answer: A. A cracked box lock is a structural failure. The instrument can break apart during surgery, and the crack traps bioburden that cleaning cannot remove. It is removed from service and repaired or replaced.
Why not B: Lubricant does not fix a crack and adds residue inside it.
Why not C: Box lock cracks are not cosmetic. They lead to breakage in the surgical field.
Why not D: Rewashing does not change a structural crack. The instrument still has to come out of service.
Exam tactic: Cracked box lock = broken instrument waiting to happen.
Answer: D. Bending instruments back into shape stresses and weakens the metal and can cause cracks or misalignment. Damaged instruments are tagged and sent to a qualified repair service, which has the tools and training to restore them.
Why not A: SPD staff do not reshape instruments, and thumb forceps are not tested with scissors test material.
Why not B: A tip protector protects good tips. It does not make a damaged instrument safe.
Why not C: Tips that do not meet cannot grasp tissue or suture properly.
Exam tactic: SPD inspects and tags. Repair techs fix.
Answer: B. Breaks in insulation let electrosurgical current escape and burn tissue outside the surgeon's view. Many breaks are too small to see, so insulated instruments are visually inspected and tested with an insulation tester each time they are processed.
Why not A: Insulation testers detect electrical leaks. They do not measure sterility.
Why not C: Detergent residue is checked by rinsing and cleaning verification, not insulation testing.
Why not D: Jaw function is checked by actuating the handle. The insulation tester checks the coating.
Exam tactic: Insulation break = hidden burn. Test every time.
Answer: A. Insulation must be intact and fixed in place along the shaft. Cracks, nicks, bubbles, discoloration or insulation that slides and exposes metal near the tip let current escape, so the instrument is removed and tagged for repair.
Why not B: Smooth, intact insulation is the expected finding for a usable instrument.
Why not C: A dry surface is required before packaging and is not a defect.
Why not D: Full jaw opening is normal function, not a reason to remove the instrument.
Exam tactic: Look for cracks, nicks, bubbles and sliding sleeves.
Answer: C. A borescope is a thin flexible or rigid camera that is passed into lumens and channels to show residual debris, damage or moisture inside. External magnification cannot see inside a narrow lumen.
Why not A: An insulation tester checks the coating on electrosurgical instruments, not the inside of lumens.
Why not B: A lighted magnifier inspects external surfaces and cannot see down a long, narrow lumen.
Why not D: Swabbing the handle tests an external surface, not the interior of the lumen.
Exam tactic: Inside a lumen? Borescope. Outside surfaces? Lighted magnifier.
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