What Is a Standard Threshold Shift on a Military Hearing Test?

Published on November 9, 2026

Seeing a standard threshold shift on your military hearing test results can raise concern. It means your hearing sensitivity has decreased compared with your baseline test, but it doesn’t automatically mean the change is permanent. Follow-up testing after a period away from loud noise helps clarify the results. Here’s what a standard threshold shift means, what may happen next, and how you can protect your hearing.

Key Takeaways

• A standard threshold shift identifies hearing changes from your baseline results.
• Follow-up testing helps determine whether hearing changes are temporary or permanent.
• Hearing protection and professional follow-up help you address hearing changes.

What Is a Standard Threshold Shift?

Put simply, a standard threshold shift marks a notable change in a person’s hearing sensitivity. Since military service members and personnel are often exposed to loud noises, employers test their hearing to ensure they are protected appropriately. According to the Occupational Safety and Health Administration (OSHA), a standard threshold shift is an average change of 10 dB or more at 2000, 3000, and 4000 Hz when compared to your baseline audiogram.

How Is a Standard Threshold Shift Calculated?

Employers may have workers complete a baseline audiogram test when they begin employment. This measures initial hearing threshold and serves as a comparison for future testing throughout employment. Types of audiometric testing can vary, but they often involve listening to sounds of different loudness and speed. The test measures your ability to hear and determines whether any noise-induced hearing loss is present.

Is a Standard Threshold Shift Temporary or Permanent?

A standard threshold shift can be either temporary or permanent. When an audiogram is performed, the results of a temporary threshold shift and a permanent threshold shift will look the same. The only way to determine the difference is to take multiple tests over time.

What Is a Temporary Threshold Shift?

When someone is exposed to loud noise, it can damage the delicate hair cells within the inner ear and affect someone’s hearing sensitivity. Typically, a temporary threshold shift can last days or weeks before returning to baseline or near baseline sensitivity levels. This shift can come with symptoms of tinnitus, which often sounds like ringing, buzzing, or clicking in the ears or head.

What Is a Permanent Threshold Shift?

A permanent threshold shift means that permanent hearing loss has occurred, likely from prolonged exposure to hazardous noise. To determine whether an STS is permanent, an audiogram must be taken again within 30 days after the first test to see if it resolved on its own. If the STS is still measured, then it can be deemed permanent.

Why Do You Need 14 Hours of Quiet Before a Retest?

It is recommended that you have at least 14 hours of quiet time before retesting so your STS has time to return to baseline. This resets your hearing and helps to confirm whether the shift was temporary or permanent.

What Happens If Your Military Hearing Test Flags a Standard Threshold Shift?

If your hearing test flags a standard threshold shift, your hearing conservation program will follow a procedure to ensure your hearing is protected. Military service members and personnel are often exposed to sounds that can exceed safe thresholds and risk hearing loss. This is why these roles are referred to as noise-hazardous duty.

Hearing conservation programs are put in place to protect workers by measuring noise levels, providing audiometric testing, offering hearing protection, and training workers about hazardous noise. If a shift is detected, you will often be scheduled for a retest within the next 30 days to determine if it is permanent.

Your hearing protection, such as earplugs or muffs, will likely be tested to ensure they are up to standards. You will likely also receive training on the dangers of hazardous noise, how to properly wear your protective equipment, and other ways to protect your hearing. You may even be referred to an audiologist to assess whether you are still fit for duty, and if you need further hearing treatment.

Quick Answers to Common Questions About Standard Threshold Shifts

Is a Standard Threshold Shift the Same as Permanent Hearing Loss?

No, a standard threshold shift may be temporary, also known as a temporary threshold shift (TTS). A TTS looks the same as permanent hearing loss on an audiogram. However, if it does not resolve over time, then it becomes permanent hearing loss. In a study of workers’ hearing thresholds, about 14% had occupational standard threshold shifts. If you have been exposed to loud noise, visit an audiologist to determine if it has affected your hearing.

Can a Standard Threshold Shift Qualify You for VA Disability Benefits?

A standard threshold shift can support your claim for VA disability benefits, but it does not automatically qualify you. A claim must include certain VA-approved hearing tests and meet specific results. As of fiscal year 2025, more than 1.6 million veterans were receiving disability compensation for hearing loss. If you are unsure whether you qualify, schedule a comprehensive hearing evaluation with a licensed audiologist to receive a VA-approved test.

Does Age Affect a Standard Threshold Shift?

Yes, hearing thresholds typically worsen with age. Some employers will apply age corrections when measuring hearing thresholds. However, this may mask the presence of workplace noised-induced hearing loss. In a study, older males were found to be the demographic most affected by Noise-Induced Hearing Threshold Shift (NITS). To get an accurate assessment, visit an audiologist.

Who Gets Tested in the Military Hearing Conservation Program?

Military service members and personnel who are exposed to hazardous noise are tested for standard threshold shifts. Military Hearing Conservation Programs provide hearing testing, protection, and training. In a report from the CDC, between 10% and 18% of those enrolled in the military reported standard threshold shifts in hearing. If you need further hearing care support, you can visit your local audiologist.

How HearingLoss.com Can Help With Standard Threshold Shifts

If you or a loved one is affected by a standard threshold shift, HearingLoss.com can help you take the next step to find a trusted hearing care professional. Take the online hearing screener to identify possible hearing concerns, then find a provider near you for an evaluation and treatment options.

References

• Masterson EA, Sweeney MH, Deddens JA, Themann CL, Wall DK. Prevalence of Workers With Shifts in Hearing by Industry: A Comparison of OSHA and NIOSH Hearing Shift Criteria. Journal of Occupational and Environmental Medicine. 2014. 56(4):446–455. https://pmc.ncbi.nlm.nih.gov/articles/PMC4535326/. Accessed October 8, 2026.
• Centers for Disease Control and Prevention. Severe Hearing Impairment Among Military Veterans — United States, 2010. Morbidity and Mortality Weekly Report. 2011. 60(28):955–958. https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6028a4.htm. Accessed October 8, 2026.
• U.S. Department of Veterans Affairs, Veterans Benefits Administration. Annual Benefits Reports. https://department.va.gov/vba/annual-benefits-reports/. Accessed October 8, 2026.
• Mahboubi H, Zardouz S, Oliaei S, Pan D, Bazargan M, Djalilian HR. Noise-Induced Hearing Threshold Shift Among U.S. Adults and Implications for Noise-Induced Hearing Loss: National Health and Nutrition Examination Surveys. European Archives of Oto-Rhino-Laryngology. 2013. 270(2):461–467. https://pmc.ncbi.nlm.nih.gov/articles/PMC3743535/. Accessed October 8, 2026.

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Hearing Advantage, Inc.

At Hearing Advantage, Inc., in Poulsbo, WA, we truly believe that better hearing leads to a better life. A strong patient-provider relationship based on honesty, integrity, and values is what we strive for, and we feel that this is the best approach to making sure you don’t miss any of the precious moments in your life.