The Newborn Hearing Screening: What to Expect and What Results Mean

The newborn hearing screening is one of the most valuable tests offered as part of the NHS Newborn and Infant Physical Examination (NIPE) programme. Permanent childhood hearing loss affects approximately 1–2 in 1,000 babies born in the UK, and early identification makes a profound difference to outcomes. Understanding how the test works, what the results mean, and what happens if your baby is referred can help make the experience less stressful.

Why Early Detection Matters

Hearing plays a fundamental role in speech and language development. Babies begin learning the sounds, rhythms, and patterns of language in the womb, and the first months and years of life are a critical window for auditory learning.

Before the newborn hearing screening programme was introduced in the UK, the average age at which permanent hearing loss was identified was around two to three years — often after significant speech and language delays had developed. Now, with universal screening, most affected babies are identified within the first few weeks, allowing early intervention with hearing aids, cochlear implants, or specialist support that can significantly improve language, social, and educational outcomes.

The Two Tests Used

The UK newborn hearing screening programme uses two different tests, depending on your baby's circumstances.

Automated Otoacoustic Emissions (AOAE)

AOAE is the first-line test used for most babies. It measures the response of the tiny hair cells in the cochlea (the inner ear) to sound.

How it works: A small, soft earpiece is placed gently in your baby's ear. A series of quiet clicking sounds are played, and the device detects the tiny echo that healthy cochlear hair cells produce in response. This response — an otoacoustic emission — is absent or reduced in babies with hearing loss.

The experience: The test takes only a few minutes per ear and is completely painless. Your baby should be as still and quiet as possible, so it is often done while they are asleep or settled. The test requires a relatively quiet environment.

Interpreting the result: AOAE gives a "clear response" or "no clear response" result for each ear. A "no clear response" does not necessarily mean your baby has a hearing problem — it can occur because the baby was unsettled, there was background noise, or there is temporary fluid in the ear canal. It triggers a repeat test, not a diagnosis.

Automated Auditory Brainstem Response (AABR)

AABR is used for babies who do not get a clear response on AOAE, or for babies in neonatal intensive care or special care units (who have a higher risk of hearing problems and are offered AABR as their first-line test).

How it works: Small sensors are placed on the baby's head (typically on the forehead, behind each ear, and on the neck or shoulder). Headphones or small earpieces play soft clicking sounds, and the sensors detect the electrical response of the auditory nerve and brainstem. This tests a different part of the hearing system to AOAE and is more sensitive for certain types of hearing loss.

The experience: AABR takes slightly longer than AOAE — around 15–20 minutes — and similarly requires the baby to be still and settled.

When Is the Test Done?

The screening is offered as soon as possible after birth, usually before you leave hospital if you gave birth in an NHS trust, or within the first few weeks through a community team or audiology service if you had a home birth.

In the UK, the target is for screening to be offered before 4 weeks of age (corrected age for premature babies).

If Your Baby Gets a "Clear Response"

A clear response on both ears means your baby's hearing has passed the screen for the most common types of permanent hearing loss. The result is recorded in your baby's red book.

It is important to note that passing the newborn hearing screening does not guarantee perfect hearing. The screening detects the most common form of sensorineural (inner ear) hearing loss but does not screen for all types of hearing difficulty. If, as your baby grows, you have any concerns about their hearing or speech and language development, always raise them with your health visitor or GP regardless of the screening result.

If Your Baby Is Referred for Further Assessment

If your baby does not get a clear response after the initial test and any repeat tests in the community, they will be referred to an audiology department for a full diagnostic assessment. This referral is recommended to happen by 4 weeks of age, with diagnostic assessment completed by 8 weeks.

Being referred does not mean your baby has a hearing problem. The majority of babies referred from newborn screening are found to have normal hearing on full assessment.

A full audiological assessment includes more detailed testing to determine whether any hearing loss is present, and if so, what type, what degree, and in which frequencies it affects.

Types of Hearing Loss That May Be Identified

Sensorineural hearing loss is caused by damage to or malformation of the cochlear hair cells or the auditory nerve. It is typically permanent. Severity ranges from mild to profound.

Conductive hearing loss is caused by problems with the outer or middle ear (the ear canal, eardrum, or tiny bones of the middle ear) that prevent sound from being transmitted efficiently to the cochlea. It is often temporary — glue ear (otitis media with effusion) is the most common cause in young children.

What Happens If Hearing Loss Is Confirmed?

If permanent hearing loss is confirmed, your baby will be referred to a specialist team that typically includes audiologists, teachers of the deaf, and speech and language therapists.

Depending on the degree and type of hearing loss, intervention may include:

• Hearing aids: usually fitted within weeks of diagnosis; modern hearing aids are small, effective, and suitable from birth
• Cochlear implants: for babies with profound sensorineural hearing loss who do not benefit sufficiently from hearing aids; assessment and surgery typically happen in the first year or two of life
• Bone-anchored hearing devices: for certain types of conductive or mixed hearing loss
• Sign language and communication support: many families choose to incorporate British Sign Language (BSL) or Signed Supported English alongside spoken language

Early intervention dramatically improves outcomes. Children whose hearing loss is identified at birth and who receive appropriate support from the outset typically achieve language and educational outcomes much closer to hearing peers than those diagnosed later.

The National Deaf Children's Society (ndcs.org.uk) is an excellent resource for families who have received a diagnosis of hearing loss, offering practical information, emotional support, and connection to other families.