If you wonder whether your hearing ability is declining, your uncertainty can quickly be put to rest. Specialists can perform several types of tests to indicate the presence of conductive (affecting the outer or middle ear), sensorineural (affecting nerves in the inner ear), or mixed hearing loss (affecting both), or show whether your hearing is normal. The following are the most commonly used hearing loss tests.
Weber Hearing Loss Test
This test is performed by an otolaryngologist or audiologist by striking tuning forks of different frequencies and placing them at the midline of your skull (typically the forehead). If sound “lateralizes” (you hear it more loudly on one side), then that is the ear with potential hearing loss.
“A Weber test is a quick and easy way to identify whether you have conductive or sensorineural hearing loss, but not the precise degree of that loss,” Hope Lanter, AuD, an audiologist in Charlotte, NC tells WebMD Connect to Care.
Rinne Hearing Loss Test
With this hearing loss test, the tuning forks are placed against the mastoid bones behind your ears until you can no longer hear sound, at which point they are shifted to just outside the ear canal opening.
Like the Weber test, the Rinne test is simple and straightforward — in fact, they are often used together — “but it cannot precisely tell you how much hearing loss you experience,” Wafaa Kaf, MD, an audiologist at Missouri State University tells WebMD Connect to Care.
Audiogram Hearing Loss Test
A device lets the audiologist test each of your ears and generates a graph showing how well you hear based both on frequencies measured in Hertz (Hz) and loudness measured in decibels (dB).
That graph also helps establish if your hearing loss is conductive, sensorineural, or mixed; and “is the gold standard for giving best results to set a hearing aid. If you misunderstand the specialist’s instructions or misstate how much you really hear, the audiogram test may need to be repeated several times to give a baseline,” Lanter says.
Tympanometry Hearing Loss Test
The specialist uses the same device that measures acoustic reflex testing to measure the stiffness of the eardrum, and thus evaluate middle ear function.
“A tympanometry test is quick and easy to perform on patients of all ages and gives objective measurements of the middle ear function. However, it can be hard to use if your ear canal has oil or wax build-up, and it yields information about only conductive, not sensorineural, hearing loss,” Kaf says.
Otoacoustic Emissions (OAE) Hearing Loss Test
In this test, a probe containing a tiny speaker and microphone is inserted into the ear canal. Quiet tones are sent from the speaker to stimulate the cochlea hairs. If the hairs do not send out their own minute sounds, hearing loss is likely present.
An OAE test is used routinely for both screening hearing in infants and children and for diagnostic purposes, according to Kaf. “It is not useful in identifying the type of hearing loss, though, and excessive ear wax, noise, or movement can interfere with the test,” Kaf says.
Auditory Brainstem Response (ABR) Hearing Loss Test
Here, electrodes are placed on your head to measure how well the brain pathways for hearing and inner ear (cochlea) are working together.
However, the test doesn’t show if your hearing loss is conductive, sensorineural, or mixed, according to Lanter.
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