Articles
Asthma: Steps in testing and diagnosis
Medical history
Tests
Additional tests: Ruling out conditions other than asthma
Symptoms and medical history
Physical exam
Lung function tests
Spirometry
Content
Challenge test
FeNO test
Other tests
Trial treatment
Severity of asthma
Tests
Additional tests: Ruling out conditions other than asthma
Symptoms and medical history
Physical exam
Lung function tests
Spirometry
Content
Challenge test
FeNO test
Other tests
Trial treatment
Severity of asthma
Other tests
Other tests to support a diagnosis of asthma include:
- Blood test. A blood test can look for high levels of eosinophils in the blood, which can indicate inflammation.
- X-ray. A chest X-ray may be done to rule out other causes of breathing symptoms.
- Allergy testing. Allergy tests can be performed by a skin test or blood test. These tests help show substances that may cause an allergic reaction. Your healthcare professional may order these tests if allergic reactions are suspected triggers of asthma attacks.
