CRCST EXAM | 2026/2027 ACTUAL EXAM - 150 VERIFIED QUESTIONS AND CORRECT ANSWERS 2026/2027 Edition
IAHCSMM CRCST EXAMINATION PREPARATION | STERILE PROCESSING DEPARTMENT
CRCST EXAM | 2026/2027 ACTUAL EXAM
150 VERIFIED QUESTIONS AND CORRECT ANSWERS
CERTIFIED REGISTERED CENTRAL SERVICE TECHNICIAN
(CRCST) CERTIFICATION
Aligned with the IAHCSMM CRCST Exam Content Outline | Sterile Processing Standards (ANSI/AAMI ST79, ST58, ST91) |
Healthcare Infection Control Guidelines (CDC/HICPAC) - 2026/2027 Edition
8 Sections | 150 Questions | Correct Answers Marked with Evidence-Based Rationales | Cognitive Levels: 25% Recall - 50% Application - 25%
Analysis
Section 1: Anatomy, Physiology, & Medical Terminology
Q1: The OR schedule lists a procedure described as 'pericarditis.' When the circulating nurse explains the
diagnosis to a new CS technician, the suffix '-itis' indicates that the condition involves:
A. inflammation [CORRECT]
B. surgical removal of tissue
C. a surgical incision into an organ
D. a new growth or tumor
Correct Answer: A
Rationale: The suffix '-itis' means inflammation, so pericarditis is inflammation of the pericardium, the membrane around the
heart. The suffix '-ectomy' denotes surgical removal, '-otomy' denotes an incision, and '-oma' denotes a tumor, so the other
choices attach entirely different meanings. Recognizing suffixes such as these is a core CRCST medical terminology competency
because procedure terminology drives which instrumentation and supplies are selected.
Q2: While assembling a case cart for a permanent pacemaker insertion, the technician notes the patient history
mentions 'bradycardia.' The prefix 'brady-' tells the technician that the patient's heart rate is:
A. slow, below the normal range [CORRECT]
B. rapidly elevated above 100 beats per minute
C. irregular and painful
D. abnormally enlarged
Correct Answer: A
Rationale: The prefix 'brady-' means slow, so bradycardia is a slow heart rate, generally below 60 beats per minute, which is
the condition a pacemaker corrects. The prefix 'tachy-' means fast, '-megaly' means enlargement, and '-dynia' means pain,
making the remaining options incorrect. Understanding these word parts allows CS technicians to connect procedure names with
the instrumentation they assemble.
Certified Registered Central Service Technician (CRCST) Certification Page 1
,CRCST EXAM | 2026/2027 ACTUAL EXAM - 150 VERIFIED QUESTIONS AND CORRECT ANSWERS 2026/2027 Edition
Q3: A surgical schedule lists 'nephrectomy' as the morning add-on case. The technician selecting the
instrumentation should recognize that the root 'nephr/o' refers to the:
A. urinary bladder
B. uterus
C. kidney [CORRECT]
D. liver
Correct Answer: C
Rationale: The root 'nephr/o' means kidney, so a nephrectomy is the surgical removal of a kidney and requires a renal or major
abdominal instrument set. The combining form 'cyst/o' refers to the bladder, 'hepat/o' refers to the liver, and 'hyster/o' refers to
the uterus. Accurate root-word interpretation prevents assembling the wrong major tray for a significant organ procedure.
Q4: During case cart assembly for a 'cholecystectomy,' a new technician asks the lead what the procedure name
means. The correct explanation is surgical:
A. repair of an abdominal wall hernia
B. incision into the colon
C. removal of the appendix
D. removal of the gallbladder [CORRECT]
Correct Answer: D
Rationale: Cholecystectomy combines 'chol/e' (bile), 'cyst/o' (bladder), and '-ectomy' (surgical removal), so the procedure
removes the gallbladder and requires a gallbladder or laparotomy set with clip appliers. An incision into the colon would be a
colotomy, appendix removal is an appendectomy, and hernia repair is a herniorrhaphy. Deconstructing the term into root,
combining vowel, and suffix confirms the correct tray selection.
Q5: During a preoperative huddle for a sternotomy, the surgeon states the incision will follow the plane that
divides the body into equal right and left halves. This anatomical plane is the:
A. transverse plane
B. midsagittal plane [CORRECT]
C. frontal (coronal) plane
D. oblique plane
Correct Answer: B
Rationale: The midsagittal (median) plane runs vertically through the midline and divides the body into equal right and left
portions, which is why a midline sternotomy follows it. The transverse (horizontal) plane divides the body into upper and lower
parts, the frontal (coronal) plane divides it into anterior and posterior parts, and the oblique plane runs at an angle. Knowledge
of anatomical planes helps CS technicians understand incision locations and the exposure instrumentation surgeons prefer.
Certified Registered Central Service Technician (CRCST) Certification Page 2
,CRCST EXAM | 2026/2027 ACTUAL EXAM - 150 VERIFIED QUESTIONS AND CORRECT ANSWERS 2026/2027 Edition
Q6: In an operative report, a laceration on the forearm is described as 'distal to the elbow.' The CS technician
assembling the laceration repair tray should understand that distal means the wound lies:
A. farther from the trunk or point of attachment [CORRECT]
B. toward the back of the body
C. closer to the trunk or point of attachment
D. toward the midline of the body
Correct Answer: A
Rationale: Distal means farther from the origin or point of attachment of a limb, so the wrist is distal to the elbow, and
proximal means closer to that point of attachment. 'Toward the midline' describes medial, and 'toward the back' describes
posterior or dorsal. Directional terminology of this kind appears in procedure documentation that technicians read when
verifying case cart accuracy.
Q7: A CS technician reviewing a cardiac procedure guide reads that oxygenated blood is pumped into the aorta
to supply the entire body. Which chamber of the heart performs this function?
A. left atrium
B. right atrium
C. right ventricle
D. left ventricle [CORRECT]
Correct Answer: D
Rationale: The left ventricle is the thickest, strongest chamber and pumps oxygenated blood into the aorta for systemic
circulation. The right atrium receives deoxygenated blood from the body, and the right ventricle pumps that blood to the lungs,
while the left atrium only receives oxygenated blood returning from the lungs. This anatomy matters in CS because cardiac and
vascular sets are built around procedures performed on specific chambers and great vessels.
Q8: While assembling a tracheostomy tray, the technician recalls that in the respiratory system the actual
exchange of oxygen and carbon dioxide takes place in the:
A. alveoli [CORRECT]
B. bronchi
C. trachea
D. larynx
Correct Answer: A
Rationale: Gas exchange occurs across the thin walls of the alveoli, the tiny air sacs at the ends of the bronchial tree that are
surrounded by pulmonary capillaries. The trachea and bronchi are conduction airways that transport air but do not exchange
gases, and the larynx houses the vocal cords and protects the airway. Recognizing respiratory anatomy supports correct
processing of airway instrumentation such as tracheostomy tubes and bronchoscope accessories.
Certified Registered Central Service Technician (CRCST) Certification Page 3
, CRCST EXAM | 2026/2027 ACTUAL EXAM - 150 VERIFIED QUESTIONS AND CORRECT ANSWERS 2026/2027 Edition
Q9: A bowel procedure tray is being checked before a Whipple-related resection. The technician should know
that the segment of the small intestine that first receives partially digested food from the stomach is the:
A. cecum
B. jejunum
C. ileum
D. duodenum [CORRECT]
Correct Answer: D
Rationale: The duodenum is the first and shortest segment of the small intestine, receiving chyme from the stomach through the
pyloric sphincter along with bile and pancreatic enzymes. The jejunum and ileum follow it and handle absorption, while the
cecum is actually the pouch that begins the large intestine. Knowing GI anatomy in sequence helps technicians support
gastrointestinal instrumentation requests accurately.
Q10: When building a case cart for a total knee replacement, the technician must understand that total knee
arthroplasty involves replacing:
A. the entire femur and tibia with long metal rods
B. only the meniscus with a synthetic cushion
C. the knee ligaments with synthetic grafts
D. the damaged femoral and tibial joint surfaces, and often the patellar surface, with prosthetic components
[CORRECT]
Correct Answer: D
Rationale: Total knee arthroplasty resurfaces the worn distal femur and proximal tibia, and usually the patellar surface, with
metal and plastic prosthetic components, which is why the set contains trials, broaches, saws, and impactors. Resecting the
whole femur and tibia is not done, meniscal cushions are removed rather than replaced alone, and ligament replacement is a
separate reconstructive procedure. Musculoskeletal procedure knowledge drives correct selection of both the general set and the
vendor-specific arthroplasty components.
Q11: During preparation for a craniotomy, the technician reviews the neurological system documentation. The
central nervous system consists of the:
A. spinal cord and autonomic ganglia
B. brain and spinal cord [CORRECT]
C. brain, spinal cord, and all sensory receptors
D. brain and peripheral nerves only
Correct Answer: B
Rationale: The central nervous system is composed of the brain and spinal cord, which act as the body's processing and control
centers. The peripheral nerves, autonomic ganglia, and sensory receptors belong to the peripheral nervous system and its
subdivisions. This distinction matters when technicians process neurosurgical sets, where instruments are arranged around
delicate CNS structures.
Certified Registered Central Service Technician (CRCST) Certification Page 4
IAHCSMM CRCST EXAMINATION PREPARATION | STERILE PROCESSING DEPARTMENT
CRCST EXAM | 2026/2027 ACTUAL EXAM
150 VERIFIED QUESTIONS AND CORRECT ANSWERS
CERTIFIED REGISTERED CENTRAL SERVICE TECHNICIAN
(CRCST) CERTIFICATION
Aligned with the IAHCSMM CRCST Exam Content Outline | Sterile Processing Standards (ANSI/AAMI ST79, ST58, ST91) |
Healthcare Infection Control Guidelines (CDC/HICPAC) - 2026/2027 Edition
8 Sections | 150 Questions | Correct Answers Marked with Evidence-Based Rationales | Cognitive Levels: 25% Recall - 50% Application - 25%
Analysis
Section 1: Anatomy, Physiology, & Medical Terminology
Q1: The OR schedule lists a procedure described as 'pericarditis.' When the circulating nurse explains the
diagnosis to a new CS technician, the suffix '-itis' indicates that the condition involves:
A. inflammation [CORRECT]
B. surgical removal of tissue
C. a surgical incision into an organ
D. a new growth or tumor
Correct Answer: A
Rationale: The suffix '-itis' means inflammation, so pericarditis is inflammation of the pericardium, the membrane around the
heart. The suffix '-ectomy' denotes surgical removal, '-otomy' denotes an incision, and '-oma' denotes a tumor, so the other
choices attach entirely different meanings. Recognizing suffixes such as these is a core CRCST medical terminology competency
because procedure terminology drives which instrumentation and supplies are selected.
Q2: While assembling a case cart for a permanent pacemaker insertion, the technician notes the patient history
mentions 'bradycardia.' The prefix 'brady-' tells the technician that the patient's heart rate is:
A. slow, below the normal range [CORRECT]
B. rapidly elevated above 100 beats per minute
C. irregular and painful
D. abnormally enlarged
Correct Answer: A
Rationale: The prefix 'brady-' means slow, so bradycardia is a slow heart rate, generally below 60 beats per minute, which is
the condition a pacemaker corrects. The prefix 'tachy-' means fast, '-megaly' means enlargement, and '-dynia' means pain,
making the remaining options incorrect. Understanding these word parts allows CS technicians to connect procedure names with
the instrumentation they assemble.
Certified Registered Central Service Technician (CRCST) Certification Page 1
,CRCST EXAM | 2026/2027 ACTUAL EXAM - 150 VERIFIED QUESTIONS AND CORRECT ANSWERS 2026/2027 Edition
Q3: A surgical schedule lists 'nephrectomy' as the morning add-on case. The technician selecting the
instrumentation should recognize that the root 'nephr/o' refers to the:
A. urinary bladder
B. uterus
C. kidney [CORRECT]
D. liver
Correct Answer: C
Rationale: The root 'nephr/o' means kidney, so a nephrectomy is the surgical removal of a kidney and requires a renal or major
abdominal instrument set. The combining form 'cyst/o' refers to the bladder, 'hepat/o' refers to the liver, and 'hyster/o' refers to
the uterus. Accurate root-word interpretation prevents assembling the wrong major tray for a significant organ procedure.
Q4: During case cart assembly for a 'cholecystectomy,' a new technician asks the lead what the procedure name
means. The correct explanation is surgical:
A. repair of an abdominal wall hernia
B. incision into the colon
C. removal of the appendix
D. removal of the gallbladder [CORRECT]
Correct Answer: D
Rationale: Cholecystectomy combines 'chol/e' (bile), 'cyst/o' (bladder), and '-ectomy' (surgical removal), so the procedure
removes the gallbladder and requires a gallbladder or laparotomy set with clip appliers. An incision into the colon would be a
colotomy, appendix removal is an appendectomy, and hernia repair is a herniorrhaphy. Deconstructing the term into root,
combining vowel, and suffix confirms the correct tray selection.
Q5: During a preoperative huddle for a sternotomy, the surgeon states the incision will follow the plane that
divides the body into equal right and left halves. This anatomical plane is the:
A. transverse plane
B. midsagittal plane [CORRECT]
C. frontal (coronal) plane
D. oblique plane
Correct Answer: B
Rationale: The midsagittal (median) plane runs vertically through the midline and divides the body into equal right and left
portions, which is why a midline sternotomy follows it. The transverse (horizontal) plane divides the body into upper and lower
parts, the frontal (coronal) plane divides it into anterior and posterior parts, and the oblique plane runs at an angle. Knowledge
of anatomical planes helps CS technicians understand incision locations and the exposure instrumentation surgeons prefer.
Certified Registered Central Service Technician (CRCST) Certification Page 2
,CRCST EXAM | 2026/2027 ACTUAL EXAM - 150 VERIFIED QUESTIONS AND CORRECT ANSWERS 2026/2027 Edition
Q6: In an operative report, a laceration on the forearm is described as 'distal to the elbow.' The CS technician
assembling the laceration repair tray should understand that distal means the wound lies:
A. farther from the trunk or point of attachment [CORRECT]
B. toward the back of the body
C. closer to the trunk or point of attachment
D. toward the midline of the body
Correct Answer: A
Rationale: Distal means farther from the origin or point of attachment of a limb, so the wrist is distal to the elbow, and
proximal means closer to that point of attachment. 'Toward the midline' describes medial, and 'toward the back' describes
posterior or dorsal. Directional terminology of this kind appears in procedure documentation that technicians read when
verifying case cart accuracy.
Q7: A CS technician reviewing a cardiac procedure guide reads that oxygenated blood is pumped into the aorta
to supply the entire body. Which chamber of the heart performs this function?
A. left atrium
B. right atrium
C. right ventricle
D. left ventricle [CORRECT]
Correct Answer: D
Rationale: The left ventricle is the thickest, strongest chamber and pumps oxygenated blood into the aorta for systemic
circulation. The right atrium receives deoxygenated blood from the body, and the right ventricle pumps that blood to the lungs,
while the left atrium only receives oxygenated blood returning from the lungs. This anatomy matters in CS because cardiac and
vascular sets are built around procedures performed on specific chambers and great vessels.
Q8: While assembling a tracheostomy tray, the technician recalls that in the respiratory system the actual
exchange of oxygen and carbon dioxide takes place in the:
A. alveoli [CORRECT]
B. bronchi
C. trachea
D. larynx
Correct Answer: A
Rationale: Gas exchange occurs across the thin walls of the alveoli, the tiny air sacs at the ends of the bronchial tree that are
surrounded by pulmonary capillaries. The trachea and bronchi are conduction airways that transport air but do not exchange
gases, and the larynx houses the vocal cords and protects the airway. Recognizing respiratory anatomy supports correct
processing of airway instrumentation such as tracheostomy tubes and bronchoscope accessories.
Certified Registered Central Service Technician (CRCST) Certification Page 3
, CRCST EXAM | 2026/2027 ACTUAL EXAM - 150 VERIFIED QUESTIONS AND CORRECT ANSWERS 2026/2027 Edition
Q9: A bowel procedure tray is being checked before a Whipple-related resection. The technician should know
that the segment of the small intestine that first receives partially digested food from the stomach is the:
A. cecum
B. jejunum
C. ileum
D. duodenum [CORRECT]
Correct Answer: D
Rationale: The duodenum is the first and shortest segment of the small intestine, receiving chyme from the stomach through the
pyloric sphincter along with bile and pancreatic enzymes. The jejunum and ileum follow it and handle absorption, while the
cecum is actually the pouch that begins the large intestine. Knowing GI anatomy in sequence helps technicians support
gastrointestinal instrumentation requests accurately.
Q10: When building a case cart for a total knee replacement, the technician must understand that total knee
arthroplasty involves replacing:
A. the entire femur and tibia with long metal rods
B. only the meniscus with a synthetic cushion
C. the knee ligaments with synthetic grafts
D. the damaged femoral and tibial joint surfaces, and often the patellar surface, with prosthetic components
[CORRECT]
Correct Answer: D
Rationale: Total knee arthroplasty resurfaces the worn distal femur and proximal tibia, and usually the patellar surface, with
metal and plastic prosthetic components, which is why the set contains trials, broaches, saws, and impactors. Resecting the
whole femur and tibia is not done, meniscal cushions are removed rather than replaced alone, and ligament replacement is a
separate reconstructive procedure. Musculoskeletal procedure knowledge drives correct selection of both the general set and the
vendor-specific arthroplasty components.
Q11: During preparation for a craniotomy, the technician reviews the neurological system documentation. The
central nervous system consists of the:
A. spinal cord and autonomic ganglia
B. brain and spinal cord [CORRECT]
C. brain, spinal cord, and all sensory receptors
D. brain and peripheral nerves only
Correct Answer: B
Rationale: The central nervous system is composed of the brain and spinal cord, which act as the body's processing and control
centers. The peripheral nerves, autonomic ganglia, and sensory receptors belong to the peripheral nervous system and its
subdivisions. This distinction matters when technicians process neurosurgical sets, where instruments are arranged around
delicate CNS structures.
Certified Registered Central Service Technician (CRCST) Certification Page 4
