Hearing tests measure how much sound we hear. There are many different types of tests and a clinic or health professional will carry out the best tests to assess you or your child’s hearing. The results of hearing tests can be shown on a chart called an audiogram. Measuring your hearing helps to find the type of hearing problem you or your child might have and help your health professional suggest the best treatment options.

Hearing loss is measured in decibles hearing level (or dBHL). This number represents the softest level you or your child can hear. Hearing level can be  measured for pure tone sounds, as well as for speech sounds, and can be reported for both ears (bilateral) or for each ear individually (unilateral). The amount of hearing loss someone has is ranked as mild, moderate, severe, or profound.

Normal hearing 
You can hear quiet sounds down to 20 dBHL.

Mild hearing loss
Hearing loss in your better ear between 25 39 dBHL. You have difficulty following speech in noisy situations.
Moderate hearing loss
Hearing loss in your better ear between 40 69 dBHL. You have difficulty following speech without a hearing aid.
Severe hearing loss 
Hearing loss in you better ear between 70 89 dBHL. Require powerful hearing aid or an implant.
Profound hearing loss
Hearing loss in you better ear from 90 dBHL. You need to rely mainly on lipreading and/or sign language, or an implant.

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