Hospital-grade respiratory testing led by an experienced physiologist — diagnose asthma, COPD or other lung conditions and get a clear treatment plan.
Full diagnostic reports, in-clinic GP follow-up and no referral required. Suitable from age 7 and up.
Specialist respiratory physiologist 15+ years across NI, England & Ireland
Diagnostic packages
Two specialist packages — Asthma and COPD — each combining the right tests for the suspected condition, with a Duality GP follow-up included.
A targeted assessment for suspected asthma — including airway inflammation and reversibility testing.
A deeper assessment for suspected COPD — adds gas-transfer testing to measure how efficiently your lungs move oxygen into the blood.
What we test for
Our physiologist performs the same gold-standard tests used in hospital respiratory clinics — interpreted together to give a clear picture of your lung health.
Measures how well air flows in and out of your airways, and detects any narrowing or obstruction. Also captures how much air your lungs can hold.
Spirometry is repeated after you inhale a bronchodilator (a medication designed to open the airways). Comparing before and after shows how much your airways respond.
Measures how efficiently your lungs transfer oxygen from the air sacs into the bloodstream. Uses a small, harmless amount of carbon monoxide as a tracer because it takes the same path as oxygen.
A simple, non-invasive way to assess for airway inflammation. Nitric oxide is a biomarker found in the breath that rises when airways are inflamed.
Why Duality
Physiology team plus GPs under one roof — testing, diagnosis and management all in one place.
Book direct with our physiologist. We're happy to receive referrals from GPs or consultants too.
Suitable from age 7 — particularly useful for suspected asthma, exercise-induced symptoms or hayfever effects.
Full diagnostic reports you can share with your NHS GP, a Duality GP or a respiratory consultant.
Should you book a test?
Lung function testing helps confirm a diagnosis early, so treatment can begin before any further damage occurs.
Lung disease affects 1 in 5 people and is one of the top three causes of death in Northern Ireland. Diagnosing earlier preserves lung function and quality of life.
FAQs
For suspected asthma you'd benefit from FeNO (to look for airway inflammation) and spirometry with reversibility (to look for airway obstruction and how it responds to inhalers). Both are included in our Test for Asthma package — £350 for a 1-hour appointment with a GP follow-up.
Typically 40 to 75 minutes, depending on which tests are needed. The asthma package is around 1 hour, the COPD package around 75 minutes.
The tests are safe, non-invasive and painless. The physiologist takes a detailed history, asks some safety questions, and measures your blood pressure and oxygen levels before testing.
You'll then breathe into a machine through a mouthpiece while a nose clip seals your nose. Depending on the tests, you may be asked to blow out forcefully, breathe in fully and hold your breath, or inhale a bronchodilator. Several tests are usually carried out in one appointment, and the physiologist will guide you through each step.
Normal results don't always mean you're disease-free — they mean your lung function looked normal on that day. This is particularly relevant in asthma, where lung function can fluctuate. If you're still symptomatic, we'd suggest periodic re-testing until a clear picture emerges. Your GP follow-up will help you make sense of this.
If the results support a diagnosis of asthma, COPD or another lung condition, your Duality GP (or your own GP or consultant) can start a tailored treatment plan straight away. Sometimes further investigations or a consultant referral are recommended — your follow-up appointment will cover what's next.
Yes — both packages are suitable from age 7. We often see children when parents have concerns about asthma, exercise-induced symptoms or hayfever-triggered breathing problems.
Hospital-grade testing, full diagnostic reports and a Duality GP follow-up — book direct, no referral required.
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