Comparison of chemiluminescence immunoassay, enzyme-linked immunosorbent assay and passive agglutination for diagnosis of Mycoplasma pneumoniae infection
Authors Chen DM, Zhang YJ, Xu YJ, Shen TT, Cheng GR, Huang BK, Ruan XD, Wang CR
Received 7 December 2017
Accepted for publication 18 January 2018
Published 11 June 2018 Volume 2018:14 Pages 1091—1097
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 5
Editor who approved publication: Professor Deyun Wang
Dongmiao Chen,1,* Yajie Zhang,1,* Yinjuan Xu,2 Tingting Shen,1 Guorui Cheng,1 Bingkang Huang,1 Xiandong Ruan,2 Congrong Wang1
1Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong, China; 2Department of Laboratory, Xintang Hospital, Southern Medical University, Zengcheng, Guangzhou 511340, Guangdong, China
*These authors contributed equally to this work
Objective: This study aimed to compare the performance of chemiluminescence immunoassay (CLIA), enzyme-linked immunosorbent assay (ELISA), and passive agglutination (PA) method in detecting Mycoplasma pneumoniae (MP) infection.
Methods: This study enrolled a total of 280 patients who were consecutively seen at the Nanfang Hospital of the Southern Medical University in Guangdong Province, China, between August and December 2016. Serum was collected and examined by CLIA, ELISA, and PA, respectively.
Results: There were 180 positive (64.3%) and 100 negative cases (35.7%) by PA, 184 positive (65.7%) and 96 negative cases (34.3%) by CLIA MP- immunoglobulin (Ig) M, 89 positive (31.8%) and 191 negative cases (68.2%) by CLIA MP-IgG, 196 positive (70%) and 84 negative cases (30%) by ELISA MP-IgM, and 114 positive (40.7%) and 166 negative cases (59.3%) by ELISA MP-IgG. Patients were allocated to two groups based on PA results. In PA-negative group (≤1:40), the positive rates of MP-IgM by CLIA were 22.8% and 51.2% and by ELISA were 33.3% and 53.5%, respectively. In the PA-positive group (1:80 to ≥1:1,280), MP-IgM negative cases showed a decreasing trend: 40%, 18%, 14.3%, 10%, and 6.7% (CLIA), and 43.3%, 8%, 14.3%, 5%, and 6.7% (ELISA). The consistency between CLIA/ELISA MP-IgM, -IgG, and -IgG+MP-IgM was >92% for negative cases and >75% for positive cases, resulting in an overall consistency rate >88%. The kappa coefficients were 0.804, 0.763, and 0.806, respectively.
Conclusion: CLIA and ELISA have a higher sensitivity compared with PA. CLIA has a high concordance with ELISA. Moreover, CLIA has a higher specificity and sensitivity for the detection of IgM and IgG and should be used for the clinical diagnosis of MP infection.
Keywords: chemiluminescence immunoassay, enzyme-linked immunosorbent assay, passive agglutination, mycoplasma pneumonia antibody
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