The diagnostic criteria for ABPA include a history of asthma, evidence of Aspergillus fumigatus (A. fumigatus) IgE sensitisation on blood and/or skin tests, elevated total IgE levels and eosinophil counts, detection of Aspergillus precipitins or IgG, isolation of A. fumigatus in sputum cultures, presence of pulmonary infiltrates on chest x rays and distribution of bronchiectasis on CT chest scans.