Q: How much does the DANB Radiation Health and Safety (RHS®) and Infection Control (ICE®) Exams cost?

$270 — RHS exam (taken on its own) (DANB, per attempt); $270 — ICE exam (taken on its own) (DANB, per attempt); $375 — Combined RHS/ICE exam (both in one appointment) (DANB, per attempt). DANB's Candidate Handbook states there is no limit on retakes of a failed exam, but each retake means reapplying and paying the full exam fee. Refunds are reduced by DANB's processing and cancellation fees, which are listed in the handbook. Whatever a state charges for its own dental-assisting permit or registration is set by that state, not by DANB.

Question 1

Who administers the DANB Radiation Health and Safety (RHS®) and Infection Control (ICE®) Exams?

Accepted Answer

Dental Assisting National Board, Inc. (DANB) — exam delivered by Pearson VUE

DANB states its exams are delivered by Pearson VUE. RHS and ICE are two separate DANB exams: each can be taken on its own, in person at a Pearson VUE test center or through online remote proctoring, or the two can be taken together as the combined RHS/ICE exam, for which DANB lists test-center delivery only.

Source: DANB — Candidate Handbook (PDF, updated 6/22/2026) (2026-09-22)

Question 2

How many questions are on the DANB Radiation Health and Safety (RHS®) and Infection Control (ICE®) Exams?

Accepted Answer

75 questions. Per exam: DANB lists 75 multiple-choice questions for RHS and 75 for ICE, so a candidate who needs both answers 150 in total — the figure DANB lists for the combined RHS/ICE exam. DANB states a small number of unscored pretest questions may appear on each exam; it does not say how many, so no scored count is given here.

Question 3

How long is the DANB Radiation Health and Safety (RHS®) and Infection Control (ICE®) Exams?

Accepted Answer

60 minutes. Per exam: 60 minutes for RHS and 60 minutes for ICE. Taken together as the combined RHS/ICE exam, DANB lists 120 minutes.

Question 4

What is the passing score for the DANB Radiation Health and Safety (RHS®) and Infection Control (ICE®) Exams?

Accepted Answer

Scaled score of 400 on a 100–900 scale. The same rule for each exam, stated in both the RHS and the ICE outline: a scaled score of 400 or higher, on a scale of 100 to 900. DANB is explicit that the scaled score is neither a number correct nor a percent correct: the exams are computer-adaptive and scored on the difficulty of the questions answered correctly, and DANB says the average candidate answers around half the questions correctly. PrepPass states no percentage for this exam.

Question 5

How much does the DANB Radiation Health and Safety (RHS®) and Infection Control (ICE®) Exams cost?

Accepted Answer

$270 — RHS exam (taken on its own) (DANB, per attempt) Source
$270 — ICE exam (taken on its own) (DANB, per attempt) Source
$375 — Combined RHS/ICE exam (both in one appointment) (DANB, per attempt) Source

DANB's Candidate Handbook states there is no limit on retakes of a failed exam, but each retake means reapplying and paying the full exam fee. Refunds are reduced by DANB's processing and cancellation fees, which are listed in the handbook. Whatever a state charges for its own dental-assisting permit or registration is set by that state, not by DANB.

Source: DANB — RHS/ICE (combined exam detail page) (2026-09-22)

Question 6

What languages is the DANB Radiation Health and Safety (RHS®) and Infection Control (ICE®) Exams offered in?

Accepted Answer

English · Spanish. DANB's RHS, ICE and combined RHS/ICE pages each say: “This exam is also offered in Spanish.” DANB separately lists Oregon state exams in Spanish and Vietnamese; those are Oregon's own exams, not RHS or ICE.

Administering body	Dental Assisting National Board, Inc. (DANB) — exam delivered by Pearson VUE DANB states its exams are delivered by Pearson VUE. RHS and ICE are two separate DANB exams: each can be taken on its own, in person at a Pearson VUE test center or through online remote proctoring, or the two can be taken together as the combined RHS/ICE exam, for which DANB lists test-center delivery only. Source: DANB — Candidate Handbook (PDF, updated 6/22/2026) (2026-09-22)
Questions	75 questions Per exam: DANB lists 75 multiple-choice questions for RHS and 75 for ICE, so a candidate who needs both answers 150 in total — the figure DANB lists for the combined RHS/ICE exam. DANB states a small number of unscored pretest questions may appear on each exam; it does not say how many, so no scored count is given here. Source: DANB — Radiation Health and Safety (exam detail page) (2026-09-22)
Time limit	60 minutes Per exam: 60 minutes for RHS and 60 minutes for ICE. Taken together as the combined RHS/ICE exam, DANB lists 120 minutes. Source: DANB — Radiation Health and Safety (exam detail page) (2026-09-22)
Passing score	Scaled score of 400 on a 100–900 scale The same rule for each exam, stated in both the RHS and the ICE outline: a scaled score of 400 or higher, on a scale of 100 to 900. DANB is explicit that the scaled score is neither a number correct nor a percent correct: the exams are computer-adaptive and scored on the difficulty of the questions answered correctly, and DANB says the average candidate answers around half the questions correctly. PrepPass states no percentage for this exam. Source: DANB — Radiation Health and Safety (RHS®) Exam Outline and References (PDF, effective 03/12/2025) (2026-09-22)
Fees	$270 — RHS exam (taken on its own) (DANB, per attempt) Source $270 — ICE exam (taken on its own) (DANB, per attempt) Source $375 — Combined RHS/ICE exam (both in one appointment) (DANB, per attempt) Source DANB's Candidate Handbook states there is no limit on retakes of a failed exam, but each retake means reapplying and paying the full exam fee. Refunds are reduced by DANB's processing and cancellation fees, which are listed in the handbook. Whatever a state charges for its own dental-assisting permit or registration is set by that state, not by DANB. Source: DANB — RHS/ICE (combined exam detail page) (2026-09-22)
Languages offered	English · Spanish DANB's RHS, ICE and combined RHS/ICE pages each say: “This exam is also offered in Spanish.” DANB separately lists Oregon state exams in Spanish and Vietnamese; those are Oregon's own exams, not RHS or ICE. Source: DANB — Radiation Health and Safety (exam detail page) (2026-09-22)

DANB Radiation Health and Safety (RHS®) and Infection Control (ICE®) Exams — exam facts

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