DANB’s Infection Control Examination (ICE) is a 75-question, 60-minute component examination — one of the three components of the Certified Dental Assistant (CDA) certification, and a component of the NELDA and COA credentials — across four weighted domains: Prevention of Cross-Contamination 34%, Processing Instruments and Devices 26%, Prevention of Disease Transmission 20%, and Occupational Safety and Administration Protocols 20%. It is scored on DANB’s 100-to-900 scale with 400 required to pass, carries no eligibility requirements of its own, and is taken at Pearson VUE or by online proctoring within a 60-day window for a $270 fee. PassProfessor’s companion practice program is in the works, built to that outline.
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The program is in the works, built on DANB’s published outline for this examination. Join the notify list and we will email you when enrollment opens — then use this guide to plan your preparation domain by domain.
The ICE is the most schedulable examination in the CDA pathway and the easiest to underestimate: an hour long, open to anyone, on a subject you practise every working day. That familiarity is the trap — the examination does not test your office’s habits; it tests the CDC guidelines and OSHA standards those habits were supposed to implement, at 48 seconds per question, with a third of the score riding on cross-contamination alone. This guide does the planning work in the open: where the ICE sits inside DANB’s credentials, how the application and testing window work, a domain-by-domain walk with a preparation method for each, the scaled scoring explained, fees and retakes, and a study plan proportioned to a short, dense, four-domain examination. Everything factual comes from DANB’s published materials recorded in this guide’s internal sources section.
Which examination is this?
This guide covers the Infection Control Examination (ICE), administered by the Dental Assisting National Board (DANB). The ICE is a component examination: together with the Radiation Health and Safety (RHS) examination and the General Chairside Assisting (GC) examination, it forms the examination requirement for DANB’s Certified Dental Assistant (CDA) certification, and it is also a component of the NELDA and COA credentials. It is not itself a certification, and this guide does not cover DANB’s separate CDIPC and DISIPC certifications in dental infection prevention and control, which serve different professional roles and have their own examinations, eligibility pathways, and formats. Throughout, “CDA” means DANB’s Certified Dental Assistant.
The real exam at a glance
| Fact of record | Detail |
|---|---|
| Examination | Infection Control Examination (ICE) — DANB |
| Role | Component of the CDA certification (with RHS and GC); also a component of NELDA and COA |
| Format | 75 multiple-choice questions; 60 minutes |
| Domains and weights | Prevention of Disease Transmission 20%; Prevention of Cross-Contamination 34%; Processing Instruments and Devices 26%; Occupational Safety and Administration Protocols 20% |
| Scoring | Scaled score 100 to 900; 400 or higher passes; not a percentage |
| Eligibility | None for the ICE itself |
| Delivery | Pearson VUE test center or online proctored; 60-day testing window from application approval |
| Examination fee | $270 including the $75 nonrefundable application fee; $265 for active military |
| Content foundation | CDC infection-control guidelines for dental settings; OSHA standards |
| Retakes | Reapply and pay the examination fee again |
Where the ICE sits inside DANB’s credentials
DANB’s CDA certification is assembled, not sat in one piece: three component examinations, each with its own application, window, and result, are passed and then combined under DANB’s rules for the certification to be awarded. The ICE is the infection-control component of that assembly — and because DANB attaches the CDA pathway’s education-and-experience eligibility requirements to the certification through its other components rather than to the ICE, the ICE itself carries no eligibility requirements and can be taken on its own schedule. The same component also serves inside the NELDA and COA credentials.
Two practical consequences follow. First, sequencing is flexible: many candidates bank the ICE early — even before entering or completing a dental assisting program — and let the result wait while they complete the rest of the pathway. Second, the ICE result is portable across those credentials but not beyond them: it does not satisfy any part of the CDIPC or DISIPC certifications, which are DANB’s dedicated infection-control credentials for coordinator, educator, and industry roles, examined separately and at greater length. Candidates whose goal is infection-control specialization rather than dental assisting certification should read DANB’s pages for those credentials before assuming the ICE is their examination.
How applying and the testing window work
You apply to DANB for the ICE and pay the examination fee of $270, which includes a $75 nonrefundable application fee; active military candidates pay $265. DANB’s 2026 application cycle accepts applications through December 31, 2026. Once your application is approved, a 60-day testing window opens: you schedule and sit the examination inside that window, either at a Pearson VUE test center or by online proctoring. The window is the planning fact — it is short enough that applying before you are ready wastes it, and the rational order is to prepare first, apply when your practice performance is at examination standard, and schedule promptly inside the window. An unsuccessful attempt means a fresh application and the full examination fee again for a new window; DANB publishes no cap on attempts.
The domains, one by one
Domain 1 — Prevention of Disease Transmission (20%)
The scientific foundation: the chain of infection; transmission routes in dentistry — bloodborne, airborne, droplet, and direct and indirect contact; the significant pathogens of the dental setting, including the hepatitis viruses, HIV, Mycobacterium tuberculosis, and respiratory viruses; standard precautions as the operating philosophy; vaccination of the dental team, with hepatitis B at the centre; and the principles governing exposure and post-exposure management. Preparation method: learn this domain as a causal system, not a list. Every precaution in the other three domains exists to break a specific link of the chain or block a specific route; candidates who can say which link and which route, for any procedure named, find that this domain’s items — and half the applied items elsewhere — become derivations rather than recalls.
Domain 2 — Prevention of Cross-Contamination (34%)
The examination’s largest domain and its practical heart: the Spaulding classification of items and surfaces (critical, semicritical, noncritical) and the processing or disinfection level each class requires; surface barriers and when they replace disinfection; cleaning followed by disinfection of clinical contact surfaces, and the disinfectant categories with their label claims and contact times; housekeeping surfaces; aseptic technique during treatment, including the management of supplies, drawers, and light handles mid-procedure; hand hygiene — agents, moments, and technique; personal protective equipment — selection, donning and removal sequence, and changing between patients; single-use items; and the handling of impressions, appliances, laundry, and regulated waste leaving the operatory. Preparation method: drill by classification and by moment. Take clinical scenarios — a surface touched mid-procedure, a barrier torn, an item of uncertain class — and decide the class, the breach, and the correction. This domain’s items are scenario items; flashcard knowledge of definitions underperforms until it has been run through situations.
Domain 3 — Processing Instruments and Devices (26%)
The sterilization chain end to end: the instrument processing area and its workflow from contaminated to sterile; receiving and transport; cleaning methods, including ultrasonic cleaning and its solution management; inspection and preparation; packaging materials and technique; the sterilization methods used in dentistry — saturated steam, dry heat, unsaturated chemical vapour — with the conditions each requires; monitoring at three levels — mechanical (cycle parameters), chemical (indicators and integrators), and biological (spore testing), including their frequencies and what each proves; actions on a failed biological test, including recall of loads; drying and cooling; storage, shelf life as event-related sterility; and distribution. Preparation method: memorize the chain as a fixed order with the condition attached to each link, then practise fault-finding: given a scenario with one broken link, name the link and the consequence. This is the most rule-exact domain on the examination, and it rewards exact study — parameters, frequencies, and sequences — more than any other.
Domain 4 — Occupational Safety and Administration Protocols (20%)
The regulatory and administrative frame: OSHA’s Bloodborne Pathogens Standard applied to the dental office — the written exposure control plan and its annual review, exposure determination, safer sharps devices and the sharps injury log, post-exposure evaluation and follow-up, and training requirements; the Hazard Communication Standard — safety data sheets, labelling, and chemical training — for the disinfectants and other chemicals the office uses; the infection control coordinator role and written office policies; training documentation and recordkeeping; and the relationship between federal standards, state dental board rules, and CDC recommendations — which are requirements and which are guidance. Preparation method: study this domain from the documents’ structures. The exposure control plan’s required elements, the post-exposure sequence, and the recordkeeping duties are enumerable lists in the standards themselves; learn them as lists, and learn the federal/state/guidance hierarchy once, carefully, because a family of items turns on it.
How scoring works
DANB converts performance on the ICE to a scaled score between 100 and 900, and 400 or above passes. The scaled score is not a percentage and cannot be converted back into a count of correct answers by any published formula; it is DANB’s mechanism for holding one passing standard across examination forms. On a 75-item examination the arithmetic of domains is worth keeping in view: the two largest domains together are 60% of the items, and each 20% domain is roughly 15 items — small enough that a single neglected topic inside a domain (spore-test failure protocol, say, or the exposure control plan’s elements) can represent a visible share of the distance between passing and not. Balanced preparation is not a virtue on this examination; it is the arithmetic.
Fees and retakes in full
The examination fee is $270 in total, comprising the examination fee and a $75 nonrefundable application fee; active military candidates pay $265. Because the application fee is nonrefundable and the testing window runs from approval, the fee structure rewards the prepare-first order of operations: apply when ready, test inside the window. A failed attempt is followed by a new application and the full fee for a new window — there is no reduced retake fee and no published attempt limit, so the cost of an unprepared attempt is exactly one fee and one window’s delay. Candidates pursuing the full CDA should also budget the pathway as a whole: the ICE, RHS, and GC components each carry their own DANB fees, published in DANB’s application materials for each examination.
A study plan proportioned to a one-hour examination
Phase 1 — The foundation documents (week 1). Read the CDC’s dental infection-control guidance and the OSHA Bloodborne Pathogens Standard’s dental-office requirements. This is the examination’s source text; everything later is application of it.
Phase 2 — The chain and the classes (weeks 2–3). Domain 3’s sterilization chain with its conditions and monitoring, and Domain 2’s Spaulding classification with its processing levels. These two frameworks generate a majority of the examination between them (the domains total 60%); build them until recall is immediate.
Phase 3 — Transmission science and the regulatory frame (weeks 3–4, overlapping). Domain 1’s chain of infection and pathogen set; Domain 4’s exposure control plan, hazard communication, and recordkeeping lists. Study both as enumerable structures.
Phase 4 — Scenario conversion (weeks 4–5). Convert knowledge into the examination’s form: scenario practice by domain, at the real pace of 48 seconds per question, reviewing every miss back to the guideline or standard it came from.
Phase 5 — Window discipline (final week). Apply to DANB only when Phase 4 performance is consistently at standard; schedule early inside the 60-day window; final review of sequences (PPE order, processing chain, post-exposure steps) and logistics.
What makes this test demanding
Compression. The ICE packs a regulation-grounded subject into 75 questions at 48 seconds each, which removes the option of reasoning slowly from general principles: the classification, the sequence, and the condition must already be known. Its source documents are exact, and its items are faithful to them, so office habit — even good office habit — is an unreliable substitute for the published standard. And its weighting is top-heavy: a candidate strong only in the sterilization chain has prepared, at best, for about a quarter of the examination. Domain-complete, scenario-converted, pace-trained preparation is what the examination’s shape demands.
How the four domains connect
The four domains look like separate chapters, and the outline presents them that way for a reason — but in practice, and on the examination, they form a single chain of reasoning that runs in a fixed direction. Start with transmission: a pathogen, a route, and a point where the chain can be broken. Cross-contamination prevention is what breaking the chain looks like at the chairside, moment by moment — the barrier placed, the hands cleaned, the protective equipment changed, the surface treated at the level its classification requires. Instrument processing is what breaking the chain looks like between patients, in the room where contaminated items become sterile ones again, link by link and in order. Occupational safety and administration are what make the first three repeatable: the written plan, the training, the records, and the assigned responsibilities that turn individual good practice into an office system that survives a busy day and a new member of staff.
Studying with that direction in mind changes what a practice item teaches you. When you miss an item, ask where in the chain it sits and which earlier link would have made the answer obvious. A missed item about a disinfectant’s use often turns out to be a missed classification judgement one step earlier. A missed item about a step in instrument processing often turns out to be a missed monitoring judgement — what that step is supposed to prove, and what would show that it had failed. A missed item about an office procedure often turns out to be a missed distinction between a requirement and a recommendation, which is an administration-domain habit applied to a chairside fact. Candidates who sort their errors this way discover that their weaknesses are usually narrower than their scores suggest: not a whole domain, but one link, one classification decision, or one sequence, repeated in different scenarios.
The connection also runs in the other direction, and it is worth using deliberately. If a regulatory list feels abstract — the elements of a written plan, for example, or the duties that follow an exposure — attach each element to the concrete moment it governs. The plan exists because a moment at the chairside or in the processing area will one day require a decision under time pressure, and the plan is that decision made in advance. Studied that way, the administration content stops being the examination’s dry quarter and becomes the explanation for why the other three domains are organized as they are. That understanding is durable in a way that memorized lists are not, and durability matters on an examination where there is no time to reconstruct an argument from first principles.
One study rhythm suits this examination particularly well, and it follows from the chain described above: the rotating pass. Work through the domains in order, briefly, many times, rather than once, exhaustively, in a single long residence in each. A short pass plants the framework; the next pass, a few days later, attaches detail to a structure that is already familiar; a later pass converts the detail into scenario decisions. Because the domains explain each other, each return visit is cheaper than the first, and the final passes can be given over almost entirely to timed scenario work — which is where, on an examination of this pace, preparation finally becomes performance.
Common preparation mistakes
The most common mistake is studying the office you work in instead of the standard the examination tests. Every office adapts the published guidance to its rooms, its equipment, and its habits, and most of those adaptations are sensible — but the item is written against the guideline and the standard, not against your adaptation. When a practice answer surprises you, the productive question is not whether your office does it differently; it is what the source document actually says, and whether your office’s habit is a permitted variation or a quiet departure. Candidates who work chairside every day have a real advantage in familiarity, and this mistake is how that advantage gets spent.
The second mistake is learning definitions without converting them into decisions. Knowing what a class of items is called is not the same skill as being shown an item, in a scenario, at speed, and producing its class, its required level of processing or disinfection, and the correction when something in the scenario has gone wrong. The examination’s largest domain is built from scenarios, so preparation should be built from scenarios too: short situations, decided out loud, with the reasoning stated — class, breach, correction — until the stating takes only seconds.
The third mistake is treating sequences as if order were a detail. In this subject order is frequently the substance: the steps of a processing chain, the order in which protective equipment is put on and taken off, the steps that follow an exposure. An answer that names the right actions in the wrong order is a wrong answer, and the examination knows it. Drill sequences as sequences — recited in order, written in order, and tested by deliberately scrambling them and restoring them — rather than as unordered collections of steps you recognize.
The fourth mistake is neglecting the smaller domains because they are smaller. The scoring section above makes the arithmetic plain: on an examination of this size, a single neglected topic inside a smaller domain can represent a visible share of the distance between the two outcomes. Proportion your time by the published weights, certainly — but proportion is not permission to leave a topic untouched. A short, exact pass through the enumerable lists in the regulatory domain, repeated until retrieval is reliable, is among the cheapest preparation available anywhere on this examination.
The fifth mistake is timing — applying too early, before practice performance is at standard, and spending a short testing window on a candidate who needed two more weeks; or, just as wastefully, preparing indefinitely without applying at all. The window discipline in the study plan exists to prevent both: prepare first, measure honestly in timed scenario practice, and then commit the window to a candidate who is ready to use it.
Frequently asked questions
How many questions are on the ICE, and how much time do I get? 75 multiple-choice questions in 60 minutes.
What is the passing score? A scaled score of 400 or higher on DANB’s 100-to-900 scale. It is not a percentage of questions answered correctly.
What does the ICE cost? $270, including the $75 nonrefundable application fee; $265 for active military candidates, as DANB publishes it. Confirm the current fee when you apply.
Are there eligibility requirements for the ICE? No. DANB sets no eligibility requirements for sitting the ICE on its own. The CDA pathway’s eligibility requirements attach to the certification through its other components.
How does the testing window work? Once DANB approves your application, you have 60 days to schedule and sit the examination, at a Pearson VUE test center or by online proctoring.
Does passing the ICE certify me as a dental assistant? No. The ICE is one of three components (with RHS and GC) that must be passed and combined under DANB’s rules to earn the CDA certification. It is also a component of the NELDA and COA credentials.
What are the ICE’s four domains and their weights? Prevention of Disease Transmission (20%), Prevention of Cross-Contamination (34%), Processing Instruments and Devices (26%), and Occupational Safety and Administration Protocols (20%).
What documents is the ICE based on? DANB builds the examination on the CDC’s infection-control guidelines for dental health care settings and on OSHA standards, as its outline describes.
If I fail, what happens? You submit a new application and pay the examination fee again for a new 60-day testing window. DANB publishes no limit on attempts.
Is the ICE the same examination as DANB’s CDIPC? No. CDIPC (and DISIPC) are separate DANB certifications in dental infection prevention and control with their own eligibility pathways and examinations. The ICE is the CDA pathway’s infection-control component.
Can I take the ICE before finishing a dental assisting program? Yes — there are no eligibility requirements for the ICE itself, and banking the component early is a common sequencing choice within the CDA pathway.
Are PassProfessor’s questions the real exam questions? No. They are original practice questions written to DANB’s published ICE outline. DANB does not release its examination questions.
When will the PassProfessor DANB ICE program open? The program is in the works. Join the notify list on this page or on the program page and we will email you when enrollment opens.
Disclaimer
PassProfessor is an independent exam-preparation provider; this guide and the companion program are not endorsed by, affiliated with, or sponsored by the Dental Assisting National Board (DANB) or Pearson VUE. DANB, CDA, ICE, RHS, NELDA, and COA are marks of the Dental Assisting National Board, Inc. The details in this guide are drawn from the official sources recorded below and are current as of November 2026; DANB’s official publications govern if anything here differs from them. Certifications are awarded by DANB alone.