What Is an Audiogram?

An audiogram is the record created during an audiometric hearing test. It shows the softest sounds a person can hear at different frequencies, which are commonly described as pitches. Each ear is tested separately because hearing ability may not be the same on both sides.

The results are displayed on a chart. Lower thresholds generally indicate that softer sounds were detected, while higher thresholds may reflect some degree of hearing difficulty. A trained professional reviews the pattern and determines whether the results are within an expected range or should receive further evaluation.

Why Are Hearing Tests Required for Some Jobs?

Employees in manufacturing, construction, transportation, oil and gas, and similar fields may encounter enough noise to put their hearing at risk. Hearing protection is important, but employers may also need a formal program to monitor exposure and track employee hearing.

Under OSHA’s occupational noise exposure standard, employers must make audiometric testing available to workers whose noise exposure equals or exceeds an eight-hour time-weighted average of 85 decibels. Testing is provided at no cost to covered employees. Requirements may differ based on the industry and applicable regulations.

A baseline audiogram creates a starting point for comparison. Later tests help determine whether hearing thresholds have shifted. This does not automatically establish why a change occurred, but it gives the employer and reviewing professional the information needed to determine the appropriate response.

What Happens During a Hearing Test?

The test usually takes place in a booth or another space designed to limit background noise. You will wear headphones or earphones and listen for a series of tones. Some will be easy to hear, while others will be very faint.

Each time you hear a sound, you will press a button, raise your hand, or provide another signal. There are no right or wrong answers. The goal is simply to respond whenever you detect the tone, even when it is barely audible.

The test is noninvasive and should not hurt. It typically checks several frequencies in both ears. Once testing is complete, the results are recorded on the audiogram and may be compared with earlier tests when those records are available.

How Should You Prepare?

Follow any instructions provided by your employer or testing clinic. For a baseline audiogram completed under OSHA’s hearing conservation requirements, the ears generally need to be free from workplace noise for at least 14 hours beforehand. Hearing protectors may sometimes be used to meet that requirement.

Before the appointment, tell the testing professional if you have recently experienced an ear infection, ringing in your ears, dizziness, or a sudden change in hearing. You should also mention hearing aids and any medications that may be relevant. These details provide useful context when your results are reviewed.

What Happens If Your Results Change?

A change on an audiogram does not always mean you have permanent work-related hearing loss. Temporary noise exposure, ear blockage, illness, or testing conditions can affect the results. Depending on the findings, repeat testing or evaluation by an audiologist, physician, or another qualified professional may be recommended.

Employers may also need to review workplace noise controls and confirm that hearing protection fits correctly. Employees should continue using required protection and follow any recommendations they receive.

Schedule Occupational Hearing Testing With WellNow Health

WellNow Health provides audiograms and occupational testing for employers and employees in Dickinson, Galveston, and surrounding Texas communities. Our team can help businesses monitor workforce health while supporting clear documentation and regulatory compliance. Contact WellNow Health today to schedule a hearing test or discuss an occupational testing program designed around your workplace needs.