CIS Certification/Practice Test

CIS Practice Test

Practice questions for the Certified Instrument Specialist exam — instrument identification, function testing, troubleshooting, and complex set assembly.

What the CIS Exam Tests

The CIS exam goes beyond general sterile processing knowledge. It tests advanced instrument expertise that only experienced technicians develop through years of hands-on work with surgical trays.

Identify instruments by name, function, and specialty

Determine correct assembly for multi-part instruments

Recognize damage, wear, and functional failures

Select appropriate testing methods for each instrument type

Understand instrument materials and their sterilization compatibility

Build and verify complex surgical tray configurations

Sample CIS Questions

Question 1

A Debakey tissue forceps is characterized by which tip pattern?

A.1x2 teeth

B.Serrated with a channel

C.Atraumatic double row of fine teeth

D.Ring-shaped jaws

Debakey forceps feature an atraumatic double-row (railroad track) pattern of fine teeth that allows grasping tissue without crushing. This makes them ideal for vascular surgery where tissue integrity is critical.

Question 2

What is the primary function of a Weitlaner retractor?

A.Deep abdominal retraction

B.Self-retaining wound spreading

C.Bone spreading

D.Brain retraction

The Weitlaner is a self-retaining retractor with sharp or blunt prongs. Its ratchet mechanism holds the wound open without manual assistance, freeing the surgeon's and assistant's hands for other tasks.

Question 3

When inspecting a Kerrison rongeur, what is the MOST critical functional test?

A.Jaw alignment under magnification

B.Spring tension return

C.Footplate engagement without tissue trapping

D.Ratchet click count

The Kerrison's footplate must engage cleanly without trapping or cutting tissue inadvertently. A damaged or misaligned footplate can cause nerve injury during spinal surgery. This is the most safety-critical functional check.

Study Tips for the CIS Exam

Study instrument catalogs:Stryker, Aesculap, and Sklar catalogs are the best free visual references for instrument identification.

Practice with real trays:There is no substitute for hands-on time. Volunteer to build unfamiliar specialty trays at work.

Learn the specialties:The exam tests instruments across orthopedics, cardiovascular, neuro, plastics, and general surgery.

Know repair indicators:Understand when an instrument can be sharpened/repaired vs. when it must be replaced.

Build Your Foundation First

The CIS builds on CRCST knowledge. If you haven't earned your CRCST yet, start there:

CRCST Practice Test|CRCST Certification Guide

Ready to test your instrument knowledge?

Start with our foundational sterile processing practice test — it covers Chapters 10-11 on instrumentation.

Practice Instrumentation Questions