title: Evaluation of a modified lateral flow immunoassay for detection of high-sensitivity cardiac troponin I and myoglobin.
abstract: We prospectively evaluated the use of lateral flow immunoassay (LFIA) test modified with nanoparticles for combined detection of high-sensitivity cardiac troponin I (hs-cTnI) and myoglobin with the aim of excluding acute myocardial infarction (AMI). Specimens from 173 patients with symptoms suggestive of AMI were collected to measure hs-cTnI and myoglobin using an electrochemiluminescence immunoassay (ECLI) and the LFIA test modified with nanoparticles, and a comparison was performed between the modified method and a commercial LFIA test for detection of the two proteins. The accuracy of the modified LFIA test was also evaluated. Consistent agreement was observed in the quantitative comparison of 173 clinical samples using the modified LFIA and ECLI, and the modified method was more sensitive than the commercial LFIA test. The accuracy of the modified LFIA was <12% for both hs-cTnI and myoglobin. Thus, the new approach has great potential to improve LFIAs test, demonstrating its usefulness for simple screening applications and for sensitivity and quantitative immunoassays for diagnosis ofAMI.
authors.affiliation: State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Science, Shanghai 200050, China.
authors.forename: Jimin
authors.initials: J
authors.lastname: Zhu
authors.forename: Nengli
authors.initials: N
authors.lastname: Zou
authors.forename: Hongju
authors.initials: H
authors.lastname: Mao
authors.forename: Ping
authors.initials: P
authors.lastname: Wang
authors.forename: Danian
authors.initials: D
authors.lastname: Zhu
authors.forename: Huoyan
authors.initials: H
authors.lastname: Ji
authors.forename: Hui
authors.initials: H
authors.lastname: Cong
authors.forename: Changjiang
authors.initials: C
authors.lastname: Sun
authors.forename: Huimin
authors.initials: H
authors.lastname: Wang
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.forename: Juying
authors.initials: J
authors.lastname: Qian
authors.forename: Qinghui
authors.initials: Q
authors.lastname: Jin
authors.forename: Jianlong
authors.initials: J
authors.lastname: Zhao
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007118:Immunoassay / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000097:blood* / Q000473:pathology; D009211:Myoglobin / Q000097:blood*; D053758:Nanoparticles / Q000737:chemistry; D019210:Troponin I / Q000097:blood*
chemical_list: D009211:Myoglobin; D019210:Troponin I