Type 1: In-lab Sleep Study ($0.00 subject to Medicare eligibility)


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Type 1: In-lab Sleep Study

What is an In-Lab Sleep Study?

An In-Lab Sleep Study, also called Polysomnography (PSG), is the gold-standard test for sleep disorders. Patients attend a facility where they are monitored by a technician for the duration of their study. PSGs can come in several types, each used for a different purpose. It is recommended that patients seek the advice of their family doctor and sleep specialist to assess their suitability for these tests:

1. Diagnostic Study

In a Diagnostic Study, patients will have sensors applied that measure a number of the body’s normal processes, including brainwaves, muscle movement, heart activity and blood oxygen. It is useful for diagnosing conditions like sleep-disordered breathing, which includes sleep apnoea, as well as insomnia (difficulty falling/staying asleep), parasomnias (e.g. sleepwalking, night terrors), and periodic leg movement disorder (restless leg disorder).

2. CPAP Titration Study

For patients who require a CPAP machine (e.g. with a diagnosis of sleep apnoea), a CPAP Titration Study can be used to determine what settings are required to control their sleep disordered breathing. Patients sleep with a mask connected to a CPAP machine, while a technician adjusts the settings in order to find the optimal configuration for the individual.

3. Split Study

A combination of a Diagnostic Study and a CPAP Titration Study. The purpose of a Split Study is to diagnose sleep disordered breathing in the first half of the night, then to find out the correct CPAP settings in the second half of the study.

4. Multiple Sleep Latency Test (MSLT)

An MSLT is a daytime study in which a patient has a series of nap periods in order to diagnose narcolepsy and idiopathic hypersomnolence, where you have unexplained trouble staying awake during the day. It measures how long it takes to fall asleep when the lights have been turned off.

5. Maintenance of Wakefulness Test (MWT)

An MWT is another daytime study, used to demonstrate a patient’s ability to stay awake during the day. It is used to objectively prove that you can stay awake during the daytime, and is sometimes required of commercial and other drivers who have a diagnosis of sleep apnoea. It is usually paired with a diagnostic sleep study the night before.






Do I need a referral from my Family Doctor?       

A referral from your General Practitioner or Specialist is required for Type 1 and 2 studies. You can download our referral form when you click on either the Type 1 or 2 study boxes below.

How do I know whether I have booked the appropriate sleep study for myself?

Once you have ordered a sleep study, you will be contacted by one of our Consultant who will assess your Medicare eligibility (if required) and book a suitable date and time with you.

What if I don’t know which sleep study type to pick?

That’s ok. Our Consultants are here to help. Call us on 1300 76 29 39 and a Consultant will talk to you about your requirements, and help you determine which sleep study will suit you best.

Alternatively, your family doctor will be able to assist you also.

How independent and reliable are my sleep study results?

The CPAP Clinic facilitates sleep study bookings (Type 1, 2 and 3) on behalf of Centurion Healthcare. All sleep studies are reported by independent sleep specialists who are not affiliated with The CPAP Clinic.

Centurion Healthcare has a well-regarded physician team that includes Respiratory Heads of Departments at major public hospitals and former President and Secretary of the Thoracic Society of Australia and New Zealand.

Centurion Healthcare provides universal bulk billing for in-lab sleep studies (available in NSW only) and Type 2 home sleep studies (available in NSW, VIC and QLD) with minimal wait time. Medicare criteria apply.

What if I have questions?

If you have questions about studies or how to make a booking, please do not hesitate to contact us on 1300 76 29 39 and speak with one of our friendly Consultants or email us at info@thecpapclinic.com.au


Sleep Study Comparison Table

Sleep Study Type

What does it record?

What does it test for?





Independent Australian Physician Review

 Technician  required

Sleep at home

Wait Time


In-lab Sleep Study

(Type 1)

NSW only

Brainwaves, heartrate, breathing, oxygen, limb movement, position, video recording

Sleep apnoea, narcolepsy, parasomnias (e.g. sleepwalking), sleep-related seizure disorders

Bulk Billed*

Required to hook patient up and monitor patient for duration of sleep study


Overnight stay in a sleep laboratory

Usually 1-2 weeks

NSW only






Home-Based Sleep Study

(Type 2)

Brainwaves, heartrate, breathing, oxygen, limb movement, position

Sleep apnoea

Bulk Billed*

Required to hook patient up only

Patient hooked up in clinic but goes home to sleep

Usually within days





Portable Sleep Study

(Type 3)

Breathing, oxygen, position

Sleep apnoea






Patient can hook up at home

Patient can hook up at home

Usually within days




*Subject to the patient holding a valid Medicare card and satisfying the criteria set by Medicare