A qualified tester
Tests must be run by a licensed or certified audiologist, otolaryngologist or physician, or by a technician certified by CAOHC or who has shown competence. Technicians work under an audiologist, otolaryngologist or physician.
In-house hearing testing
OSHA lets you run annual audiograms with your own trained staff. Put your current vendor quote into the calculator and see when bringing testing in-house pays for itself.
Cost calculator
Defaults are rough estimates. Replace them with your own quotes.
OSHA 29 CFR 1910.95
Six requirements. None of them need a van.
Tests must be run by a licensed or certified audiologist, otolaryngologist or physician, or by a technician certified by CAOHC or who has shown competence. Technicians work under an audiologist, otolaryngologist or physician.
Pure-tone, air-conduction testing at 500, 1000, 2000, 3000, 4000 and 6000 Hz in each ear, on an audiometer that meets the ANSI S3.6 specification.
A functional check before each day of testing, an acoustic calibration at least once a year, and an exhaustive calibration at least every two years.
Background noise in the test room must stay under the maximum levels in Appendix D. That can be a booth or an existing room that measures under the limits.
A baseline within 6 months of first exposure at or above 85 dBA, an annual audiogram after that, and a comparison against baseline to find standard threshold shifts.
Employees are told in writing within 21 days when a shift is found. Audiograms are kept for the length of employment.
Read the full breakdown in our OSHA hearing conservation guide.
Typical prices
Rough ranges from common quotes. Prices vary by region, volume and vendor, so treat these as a starting point, not a bid.
For a line-by-line comparison, read mobile van vs in-house hearing testing.
| Item | Approximate cost |
|---|---|
| Mobile test vanPer visit; new hires and retests may need extra visits | ≈ $20–$50 per employee, plus trip fees |
| Off-site clinicPlus travel time and time off the floor | ≈ $40–$100+ per audiogram |
| CAOHC tester courseOne-time, renewed every 5 years | ≈ $500–$1,000 per person |
| Annual acoustic calibrationPer audiometer, per year | Often a few hundred dollars |
| Test boothSkip it if an existing room meets Appendix D | ≈ $3,000–$15,000+ |
Be honest about fit
How AudiVault handles it
Your tester runs the audiogram on the AudiVault iPad audiometer, which is built to ANSI S3.6-2025 audiometer specifications.
Results sync to the cloud and are compared to the employee's baseline, with OSHA age correction.
Standard threshold shifts are flagged automatically, with the 21-day notification deadline tracked. An AI anomaly check flags unreliable tests for a retest.
The determination letter goes to your reviewing professional for electronic signature and is kept with the record.
AI analysis
Standards & compliance
The AudioMeter iPad audiometer is built to ANSI S3.6-2025 audiometer specifications*, and AudiVault supports OSHA 29 CFR 1910.95 hearing conservation programs.
Generated test signals are verified by automated conformance tests.
* Accuracy depends on annual calibration of the iPad with its wired headset by a trained technician. ANSI S3.6 conformance of the complete system is established by that calibration.
AudiVault is for occupational hearing conservation programs. It is not intended for medical diagnosis.
Yes. OSHA 1910.95 lets employers run audiometric testing with their own staff, as long as the tester is qualified (for example CAOHC-certified and working under an audiologist, otolaryngologist or physician), the audiometer meets ANSI S3.6 and is calibrated on schedule, and the room meets the Appendix D background noise limits.
The one-time costs are tester training (a CAOHC course, often roughly $500–$1,000) and a test space (a booth at roughly $3,000–$15,000+, or nothing if a room already meets Appendix D). Running costs are tester time, annual calibration and your audiometer and software. Use the calculator on this page with your own numbers.
When you need hundreds of tests in a single day, when employees are spread across many small remote sites with no one to train, or when you have no space that can meet the Appendix D noise limits. Some employers run in-house for new hires and retests and keep a van for the annual push.
OSHA requires a baseline within 6 months of first exposure, or within a year if you use a mobile van (with hearing protection worn after month six). With in-house testing, a new hire can be tested in their first week instead of waiting for the next van visit.
Problem audiograms still go to an audiologist, otolaryngologist or physician, who decides if further evaluation is needed. AudiVault flags standard threshold shifts automatically and routes the determination letter to your reviewing professional for electronic signature.
We'll walk through the iPad audiometer, calibration workflow and OSHA reporting with your headcount in mind.