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Combines the FEV1/FVC ratio with percent-predicted FEV1 and FVC to name the pattern and grade severity on the GOLD scale.
Pattern and grade
Ratio <70% indicates obstruction; FVC <80% predicted with a normal ratio suggests restriction. GOLD grades: 1 >=80%, 2 50-79%, 3 30-49%, 4 <30% predicted FEV1
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Yes. GOLD grading uses post-bronchodilator spirometry to confirm persistent airflow limitation.
No. True restriction needs lung volume measurement; low FVC only suggests it.