GOLD CTS staging system of COPD severity
Posted by dkwinter

Severity classification of COPD may use the GOLD*/CTS** staging system as follows:


Classification of Severity of Airflow Limitation in COPD

(Based on Post-Bronchodilator FEV1)

In patients with FEV1/FVC < 0.70
GOLD 1 Mild FEV1 >= 80% predicted
GOLD 2 Moderate FEV1 50-79% predicted
GOLD 3 Severe FEV1 30-49% predicted
GOLD 4 Very Severe FEV1 < 30% predicted


*GOLD=Global Initiative for Chronic Obstructive Lung Disease

**CTS=Canadian Thoracic Society