Workplace audiometric testing is a hearing test. People sometimes call it a screening because it monitors hearing over time and helps identify workers who may need follow-up. A diagnostic audiological evaluation has a different purpose: it investigates a hearing concern in more depth.
What does a workplace audiometric test measure?
In an occupational pure-tone test, a worker responds to tones at different pitches and levels in each ear. The results are recorded as hearing thresholds on an audiogram. Comparing a current audiogram with a baseline can reveal a change that should be reviewed. The result does not by itself identify the medical cause of a hearing change.
For the test process, see how workplace pure-tone hearing tests work. The Canadian Centre for Occupational Health and Safety explains baseline tests, repeat tests, and follow-up.
When is a diagnostic hearing evaluation needed?
A workplace result that is outside the expected range or has changed from the baseline deserves review. The technician may repeat the test or recommend that the worker speak with an appropriate hearing health professional. A clinical audiologist can assess a person’s hearing concern more fully and decide whether other measures, such as speech or middle-ear tests, are useful.
An occupational audiogram shows hearing thresholds and changes over time. It does not establish why a change happened, diagnose an ear condition, or replace a medical assessment when symptoms or results call for one. A worker who notices a sudden change or other concerning symptoms should seek medical advice promptly.
What should employers arrange?
Employers should plan occupational audiometric testing around the exposure and hearing conservation requirements that apply in their jurisdiction. The interval and follow-up process should be based on the relevant rules and the workplace program; a blanket “every six months” schedule is not appropriate for every team. See CCOHS guidance on hearing conservation programs for the Canadian context.
Routine monitoring and clinical follow-up serve different needs. Keep the audiograms and review changes over time, then follow the appropriate referral process when a result or symptom warrants it. The on-site audiometric testing service can help employers organize workplace testing without sending a whole crew off site.
Need on-site testing for your team? Rocky Mountain Mobile Hearing Testing serves employers in Calgary and surrounding regions. Review our mobile audiometric testing service, then request a quote with your location and headcount. You can also call (403) 399-4775.