100+ Free CEICI Practice Questions

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Which medical waste category includes anatomic, blood-soaked, and culture/stock waste requiring special treatment?

General trash

Construction debris

Recyclable cardboard

Regulated medical waste (RMW)

to track

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2026 Statistics

Key Facts: CEICI Exam

100

Exam Questions

ACAC CEICI Candidate Handbook

75%

Passing Score

ACAC

3 hrs

Time Limit

ACAC

12 ACH

AII Room Min Total ACH (ASHRAE 170)

ASHRAE 170

20 ACH

Operating Room Min Total ACH

ASHRAE 170

77-108 F

Legionella Growth Zone

ASHRAE 188 / CDC

The ACAC CEICI (Council-certified Environmental Infection Control Investigator) is a CESB-accredited credential from the American Council for Accredited Certification (ACAC). The 100-question, 3-hour proctored exam (75% to pass) covers CDC Guidelines for Environmental Infection Control, 2007 HICPAC Isolation Precautions, ASHRAE 170 healthcare ventilation (AII 12 ACH, OR 20 ACH, PE positive pressure), CDC ICRA matrix (Class I-IV), ASHRAE 188 Water Management Programs, Spaulding classification, EPA List N/K/P/G disinfectants, OSHA 1910.1030/1910.134, CMS 42 CFR 482, and Joint Commission IC chapter. Eligibility is 2 years documented field experience plus high school/GED, or 1 year experience plus a 2-year degree. Certification lasts 2 years with 40 recertification credits.

Sample CEICI Practice Questions

Try these sample questions to test your CEICI exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which organization publishes the most widely referenced healthcare infection prevention guidelines used in U.S. environmental infection control practice?

A.FDA

B.CDC (Centers for Disease Control and Prevention)

C.DOE

D.NIST

Explanation: The CDC publishes the foundational healthcare infection prevention guidelines used across the U.S., including Guidelines for Environmental Infection Control in Health-Care Facilities (2003, updated), Guideline for Disinfection and Sterilization, and Guideline for Hand Hygiene. These are the primary references in environmental infection control practice.

2An ICRA (Infection Control Risk Assessment) under the CDC matrix is required for which type of activity?

A.Routine office tasks

B.Construction, renovation, repair, or maintenance activities in healthcare facilities

C.Purchase of consumables only

D.Staff scheduling

Explanation: ICRA is required for construction, renovation, repair, and maintenance activities in healthcare facilities. The CDC ICRA matrix combines the type of activity (Type A-D) and patient risk group (Group 1-4) to define infection control precautions (Class I-IV).

3Which ASHRAE standard establishes ventilation requirements for healthcare facilities?

A.ASHRAE 55

B.ASHRAE 62.1

C.ASHRAE 170

D.ASHRAE 188

Explanation: ASHRAE Standard 170 (Ventilation of Health Care Facilities) provides design requirements for healthcare ventilation including air change rates, pressure relationships, filtration, and humidity for specific space types (OR, AII, PE, etc.). It is referenced by the FGI Guidelines.

4An Airborne Infection Isolation (AII) room requires which type of pressure relationship to adjacent spaces per CDC and ASHRAE 170?

A.Positive pressure

B.Negative pressure

C.Neutral pressure

D.Variable pressure

Explanation: AII rooms (formerly negative pressure isolation) for airborne pathogens such as Mycobacterium tuberculosis must be maintained at negative pressure relative to adjacent corridors so that contaminated air flows INTO the room and is exhausted, not into surrounding spaces. ASHRAE 170 requires at least 12 air changes per hour for AII rooms.

5Per ASHRAE 170, the minimum total air change rate for an operating room is approximately:

A.6 ACH

B.12 ACH

C.20 ACH

D.50 ACH

Explanation: ASHRAE 170 requires a minimum of 20 total air changes per hour (ACH) in an operating room (with at least 4 outdoor air changes). OR rooms are positive pressure relative to adjacent spaces with HEPA-grade filtration in many configurations.

6Which fungal organism is the primary concern during hospital construction due to its ability to cause invasive infections in immunocompromised patients?

A.Stachybotrys chartarum

B.Aspergillus fumigatus and related species

C.Cladosporium herbarum

D.Alternaria alternata

Explanation: Aspergillus species (especially A. fumigatus) are the primary construction-related fungal concern in healthcare. Spore release during demolition, dust disturbance, and dirty HVAC can cause invasive aspergillosis in immunocompromised patients (hematology, transplant, ICU). ICRA precautions are designed largely to control Aspergillus.

7Which professional association publishes 'Guide to the Elimination of Tuberculosis Transmission' and infection prevention competencies most commonly referenced in healthcare?

A.APIC

B.AIHA

C.ASHE

D.AHA

Explanation: APIC (Association for Professionals in Infection Control and Epidemiology) publishes practice guidance and competencies for infection preventionists, including the Guide to the Elimination of Mycobacterium tuberculosis Transmission and the APIC Text on infection control practices.

8EPA List N applies to which type of products?

A.Tuberculosis treatment medications

B.Disinfectants registered for use against SARS-CoV-2

C.Cosmetics

D.Construction adhesives

Explanation: EPA List N is the registry of disinfectants approved for use against SARS-CoV-2 (the virus that causes COVID-19). Infection control investigators must select EPA List N (or appropriate List equivalents) products, follow the labeled contact time, and verify environmental services use them correctly.

9Which surveillance technique is commonly used to objectively evaluate environmental cleaning of high-touch surfaces in healthcare?

A.ATP bioluminescence testing

B.Combustion testing

C.Pitot tube traverse

D.Smoke pencil air-flow check

Explanation: ATP (adenosine triphosphate) bioluminescence is a widely used method to objectively measure cleanliness of high-touch surfaces. ATP detects residual organic material; lower RLU readings post-cleaning indicate better surface cleaning. Surface ATP, fluorescent marker (Glo-germ) audits, and visual inspection are complementary.

10Which standard publishes guidelines for the design and construction of healthcare facilities used widely by jurisdictions in the U.S.?

A.FGI Guidelines for Design and Construction

B.OSHA 1910.1030

C.EPA NESHAP

D.ICC Energy Conservation Code

Explanation: The Facility Guidelines Institute (FGI) Guidelines for Design and Construction of Hospitals and Outpatient Facilities are referenced by most U.S. states for healthcare construction. The FGI Guidelines incorporate ASHRAE 170 by reference for ventilation.

About the CEICI Exam

The CEICI credential certifies competency in environmental infection control investigation including CDC guidelines, healthcare ventilation per ASHRAE 170, Infection Control Risk Assessment (ICRA), water management per ASHRAE 188, environmental cleaning verification, and regulatory compliance (OSHA, CMS, Joint Commission).

Questions

100 scored questions

Time Limit

3 hours

Passing Score

75%

Exam Fee

$500 (approx., first term — verify with ACAC) (ACAC (American Council for Accredited Certification))

CEICI Exam Content Outline

~25%

CDC & APIC Infection Control Foundations

CDC Environmental Infection Control Guidelines, HICPAC Isolation Precautions (Siegel 2007), CDC TB 2005, APIC competencies

~25%

Healthcare Ventilation & ICRA

ASHRAE 170 (AII 12 ACH, OR 20 ACH, PE positive), CDC ICRA matrix, HEPA filtration, ICRA Class I-IV containment

~15%

Water Management (Legionella)

ASHRAE 188 WMP, CDC toolkit, hot water >140 F, distal sampling, cooling tower siting

~15%

Disinfection & Environmental Cleaning

Spaulding classification, EPA List N/K/P/G, contact time, ATP verification, hospital-grade products

~20%

Regulatory Framework & Investigation Methods

OSHA 1910.1030 BBP and 1910.134, CMS 42 CFR 482, Joint Commission IC, FGI Guidelines, documentation

How to Pass the CEICI Exam

What You Need to Know

Passing score: 75%
Exam length: 100 questions
Time limit: 3 hours
Exam fee: $500 (approx., first term — verify with ACAC)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

CEICI Study Tips from Top Performers

1Memorize ASHRAE 170 pressure/ACH for AII (negative, 12 ACH), PE (positive, HEPA), OR (positive, 20 ACH), and patient room (6 ACH, 2 OA)

2Master the CDC ICRA matrix: Type A-D activity × Group 1-4 patient risk = Class I-IV precautions

3Know the Legionella growth zone (77-108 F / 25-42 C) and ASHRAE 188 WMP elements (hazard analysis, control measures, monitoring, corrective action, verification)

4Memorize the Spaulding classification: critical (sterilize) / semicritical (high-level disinfection) / noncritical (low/intermediate)

5Learn EPA Lists: N (SARS-CoV-2), K (C. difficile sporicidal), P (C. auris/fungicidal), G (norovirus)

6Know OSHA 1910.134 fit-testing (annual) and OSHA 1910.1030 BBP exposure control plan elements

Frequently Asked Questions

What is the CEICI exam?

The CEICI (Council-certified Environmental Infection Control Investigator) is a CESB-accredited credential from ACAC. It tests competency in environmental infection control investigation across CDC guidelines, ASHRAE 170 healthcare ventilation, ICRA, ASHRAE 188 water management, Spaulding-based disinfection, and applicable OSHA / CMS / Joint Commission rules.

How many questions are on the CEICI exam?

The CEICI exam contains 100 multiple-choice questions and is delivered electronically at Kryterion authorized testing centers. Candidates have 3 hours to complete the closed-book exam.

What is the passing score for the CEICI exam?

ACAC requires 75% to pass the CEICI exam. The passing score is set by the CEICI certification board using the modified Angoff method.

What are the prerequisites for the CEICI credential?

ACAC requires either (1) a 2-year post-secondary degree in a relevant field plus 1 year of documented field experience in environmental infection control investigation, OR (2) 2 years of documented field experience with a high school diploma or GED. Candidates must agree to the ACAC Code of Ethics.

How does the CEICI differ from the CEICC?

The CEICI (Investigator) is the field-investigation credential with 2 years experience required and a 100-question exam. The CEICC (Consultant) is a higher-tier consulting credential requiring 8 years of experience and a 120-question exam. Both are CESB-accredited by ACAC.

How much does the CEICI exam cost?

ACAC publishes a general first-term fee structure of approximately $500 for accredited certifications (includes a $100 processing fee). Verify current CEICI pricing at acac.org/fees.

How long is the CEICI credential valid?

CEICI certification is current for 2 years from the date of issue. Certificate holders must accumulate 40 recertification credits during the 2-year cycle and participate in 20 hours of professional development each year.

What topics should I prioritize when studying for the CEICI exam?

Focus on: (1) CDC Environmental Infection Control Guidelines (Sehulster 2003); (2) ASHRAE 170 pressure relationships and air changes (AII negative 12 ACH, OR positive 20 ACH, PE positive with HEPA, patient 6 ACH / 2 OA); (3) CDC ICRA matrix Type A-D × Group 1-4 = Class I-IV; (4) ASHRAE 188 Water Management Program elements and Legionella growth zone (77-108 F); (5) Spaulding classification and EPA Lists; (6) OSHA 1910.1030 BBP and 1910.134 fit-testing.

100+ Free CEICI Practice Questions

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