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Question 1
According to OSHA regulations (29 CFR 1910.95), a Standard Threshold Shift (STS) is defined as a change in hearing threshold, relative to the baseline audiogram, of an average of:
Correct Answer:
10 dB or more at 2000, 3000, and 4000 Hz in either ear.
Question 2
An employee's annual audiogram shows a confirmed STS. The employer must notify the employee in writing within how many days of this determination?
Correct Answer:
21 days
Question 3
A Certified Occupational Hearing Conservationist (COHC) identifies an audiogram with a potential STS and significant differences between ears. Which of the following is the most appropriate next step for the COHC?
Correct Answer:
Refer the problem audiogram to the Professional Supervisor for review.
Question 4
An annual audiogram reveals an STS. To determine if the shift is persistent, the employer may perform a retest. This retest should be conducted within:
Correct Answer:
30 days of the annual test.
Question 5
When determining if a Standard Threshold Shift (STS) has occurred, an employer may apply age corrections to the current audiogram. However, age correction is NOT permitted when determining if:
Correct Answer:
the employee's total hearing level is 25 dB or more above audiometric zero.
Question 1
Exam overview

About this Exam

Prepare with the CAOHC Occupational Hearing Conservationist Certification Exam practice quiz. This question bank includes 50 questions covering hearing, conservation, osha, audiogram, and noise. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CAOHC Occupational Hearing Conservationist Certification Exam

This practice set contains 50 questions from the matching question bank and focuses on hearing, conservation, osha, audiogram, and noise. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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