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Flowchart of patient categorisation. Based on these numbers, the diagnostic capacity of anti-GPL-core IgA antibody for MABS-PD was as follows: sensitivity 48.8%, specificity 51.4%, negative predictive value 17.1%, and positive predictive value 83%. GPL = glycopeptidolipid; IgA = immunoglobulin A; MAC = Mycobacterium avium complex; MABS = Mycobacterium abscessus species; + = positive; – = negative; NTM-PD = non-tuberculous mycobacterial pulmonary disease.
