Respiratory Investigation Units provide specialised tests to assess lung function and breathing. These tests help diagnose respiratory conditions, monitor existing conditions and guide treatment decisions.
Respiratory Investigation Units are located at Gosford and Wyong hospitals.
Referrals – how to access the service
A referral is required to access this service. Referrals are usually made by:
- General practitioners (GPs)
- Respiratory specialists
- Hospitals or outpatient clinics
We cannot accept letter‑style referrals.
All referrals must be made using the electronically fillable Respiratory Investigation Unit request form.
Respiratory Investigation Unit referral (for health professionals only) (PDF, 496KB)
Common tests available
We provide a range of respiratory function tests. Your GP or health professional will determine which tests are needed to assess your breathing or monitor your response to treatment.
Common tests include:
Lung function tests
- Spirometry – measures how much air you can breathe in and how quickly you can breathe it out
- Lung volumes – provides information about the size and health of your lungs
Gas exchange tests
- Gas transfer testing – measures how well oxygen moves from your lungs into your blood
- Arterial blood gases – checks oxygen and carbon dioxide levels in your blood
Allergy and asthma testing
- Breathing tests to assess changes in lung function related to asthma
- Skin prick testing to identify allergies that may trigger asthma symptoms
Other specialised testing
- Fitness‑to‑fly assessments for air travel
- Exercise testing to assess exercise capacity
Booking your test
Once you have a completed Respiratory Investigation Unit request form, bookings can be made by phone.
Phone: 02 4320 3529
Hours: Monday to Friday, 8am – 4pm
Email: CCLHD-Lungs@health.nsw.gov.au
What to bring
- Respiratory Investigation Unit request form, completed by your doctor
- Medicare card
Costs
No cost for patients with a valid Medicare card.
Location and getting there
Respiratory Investigation Units are located at Gosford and Wyong hospitals. Directions and site maps are located on page 2 of your referral form.
Gosford Hospital
The unit is located on level 3. From the main entrance on level 4, walk towards the lifts (I block), take the lift to level 3. Exit the lift and turn left. Follow the signs to the Respiratory Unit.
Parking is available in the multi-storey car parks. Visit:
Wyong Hospital
The unit located near the main entrance, in Diagnostic Services, which is to the right of the Information Desk. Parking is available in the lower level car park with stairs to main entrance. Drop off or disabled parking is available outside the main entrance.