P459 The Aspergillus lateral flow assay for the diagnosis of chronic pulmonary aspergillosis

Jie Peng, Jun Yan, Yuan Zhang, Wang Yao, He Wang, Yan Su, Zeqi Zhou
2022 Medical Mycology  
Poster session 3, September 23, 2022, 12:30 PM - 1:30 PM Objectives Chronic pulmonary aspergillosis (CPA) is an uncommon and problematic pulmonary disease, complicating many other respiratory disorders. Measurement of Aspergillus-specific IgG antibodies had a higher sensitivity than either IgM, IgA, or IgE and it should therefore be considered the most appropriate test for screening CPA. Aspergillus-specific IgG antibody levels have been successfully used to monitor the response of CPA to
more » ... l therapy. Recently, a novel rapid test for Aspergillus-specific IgG antibody from Dynamiker Biotechnology (Tianjin) Co., Ltd. was released as a screening test of CPA. It is a fluorescent immunochromatographic cassette test using a monoclonal antibody against Aspergillus-specific IgG antibody and Europium nanoparticles (Eu NP) (Fig. 1). It is a semi-quantitative test which was easy to operate, rapid with portable detection devices, and can be widely accepted by clinical and primary medical (Fig. 2). We collect clinical samples to verify the detection performance of the Dynamiker Quic™Aspergillus-specific IgG antibody (LFA) test. Methods In total, 102 patients were included and 42 patients were diagnosed with CPA. The pathogen was identified from sputum, BALF culture, lung resection surgery, bronchos copy biopsy, percutaneous lung biopsy and BALF GM assay. Results The sensitivity, specificity, PLR, NLP and Kappa index of the IgG antibody test were 85.6%,94.4%,14.0%,0.23% and 0.72, respectively. Conclusions The current work indicates that the Dynamiker Quic™ Aspergillus specific IgG antibody (LFA) test shows a promising application in the diagnosis of CPA. The results are accurate and reliable, and it could be used as an aid for the early rapid screening test of CPA.
doi:10.1093/mmy/myac072.p459 fatcat:ywxfbgreo5ff5frsgyzy2igzgi