Serum Immunoglobulin G and Risk of Exacerbations and Hospitalizations in Chronic Obstructive Pulmonary Disease

Hypogammaglobulinemia (total IgG levels < 7.0 g/L) is present in 1 in 4 patients with moderate to severe COPD and is associated with 50% to 100% increase in the risk of exacerbations and hospitalizations.

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