Objective:To establish a fluorescence immunochromatography for placental growth factor(PlGF),evaluate the analysis performance and clinical performance. Methods:Using fluorescent microsphere conjugated-mouse-anti-human PlGF monoclonal antibody,sheep anti-human PlGF polyclonal antibody coated on NC membrane,to establish a fluorescence immunochromatography assay for PlGF,and evaluate the analysis performance,such as linear range,accuracy,repeatability. Using serums of 136 pregnant women,electrochemiluminescence as control,to evaluate the clinical performance. Results:The linear range of fluorescence immunochromatography assay for PlGF was 20.0~9 000.0 pg/mL,accurate was 97.98%,repeatability CV was 3.14%(500.0 pg/mL)and 2.98%(5 000.0 pg/mL). The assay had good correlation with electrochemiluminescence:y=1.032x-5.002(r=0.991). Bland-Altman statistical analysis showed that the average value of fluorescence immunochromatography was slightly higher than that of electrochemiluminescence,without significant difference(P > 0.05). Conclusion:The fluorescence immunochromatography for PlGF has good analysis performance and clinical performance. The assay is suitable for clinical application.
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MA Jinqi, LI Ying, HUANG Jianrong, XUE Yifeng, XU Yafeng, WANG Chunxin. Performance evaluation of placental growth factor by fluorescence immunochromatography[J].,2021,(1):54-58.