Chronic pulmonary aspergillosis (CPA) is a slow-progressing pulmonary fungal infectious disease caused by Aspergillus. Aspergillus IgG and IgM are now considered to be valuable biomarkers in CPA diagnosis. Increased and elevated levels of IgG antibodies to are consistent with the diagnosis of aspergillosis. These antibodies may persist even after successful therapy. Increased levels of IgM antibodies to Aspergillus indicate current infection. is a causative agent of hypersensitivity pneumonitis, invasive lung disease, and allergic bronchopulmonary disease.The Aspergillus IgM is a laboratory test performed on blood sample