Rapid quantitative determination of fentanyl in human urine and serum using a gold-based immunochromatographic strip sensor

2020 ◽  
Vol 8 (37) ◽  
pp. 8573-8584
Author(s):  
Xianlu Lei ◽  
Xinxin Xu ◽  
Liqiang Liu ◽  
Hua Kuang ◽  
Liguang Xu ◽  
...  

In this study, an ultrasensitive monoclonal antibody (mAb) was prepared and used to develop an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and a colloidal gold-based immunochromatographic strip (CG-ICS) for the analysis of fentanyl in urine and serum.

2020 ◽  
Vol 8 (9) ◽  
pp. 1935-1943 ◽  
Author(s):  
Lu Zeng ◽  
Xaioling Wu ◽  
Liqiang Liu ◽  
Liguang Xu ◽  
Hua Kuang ◽  
...  

A monoclonal antibody (mAb) against vitamin B1 was prepared and based on this, an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and colloidal gold-based immunochromatographic test (ICT) strip were developed.


Molecules ◽  
2019 ◽  
Vol 24 (7) ◽  
pp. 1265 ◽  
Author(s):  
Qingkui Fang ◽  
Quan Zu ◽  
Xiude Hua ◽  
Pei Lv ◽  
Wanwen Lin ◽  
...  

A sensitive biotinylated indirect competitive enzyme-linked immunosorbent assay (Bic-ELISA) was developed to detect acetamiprid pesticides in pollen, based on the heterogeneous coating antigen and biotinylated anti-acetamiprid monoclonal antibody. Under optimized experimental conditions, the detection limit for the Bic-ELISA was 0.17 ng/mL and the linear range was 0.25–25 ng/mL. The cross-reactivities could be regarded as negligible for the biotinylated antibodies with their analogues except for thiacloprid (1.66%). Analyte recoveries for extracts of spiked pollen (camellia pollen, lotus pollen, rape pollen) ranged from 81.1% to 108.0%, with intra-day relative standard deviations (RSDs) of 4.8% to 10.9%, and the average reproducibility was 85.4% to 110.9% with inter-assay and inter-assay RSDs of 6.1% to 11.7%. The results of Bic-ELISA methods for the Taobao’s website samples were largely consistent with HPLC-MS/MS. Therefore, the established Bic-ELISA methods would be conducive to the monitoring of acetamiprid in pollen.


The Analyst ◽  
2021 ◽  
Author(s):  
Lu Lin ◽  
Shanshan Song ◽  
Xiaoling Wu ◽  
Liqiang Liu ◽  
Hua Kuang ◽  
...  

In this study, the monoclonal antibody-based indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) and an immunochromatographic strip assay were developed for the rapid screening of robenidine hydrochloride (ROBH) in samples.


2007 ◽  
Vol 40 (1) ◽  
pp. 151-162 ◽  
Author(s):  
Gong‐Jun Yang ◽  
Ping Liu ◽  
Xi‐Long Qu ◽  
Ming‐Shen ◽  
Chen‐Ying Wang ◽  
...  

2012 ◽  
Vol 58 (1) ◽  
pp. 88-94
Author(s):  
K. Li ◽  
L.Z. Nu ◽  
K.L. Khe ◽  
K.H. Song

A sensitive chemiluminescence method, based on the enhancive effect of phenobarbital on the chemiluminescence reaction between luminol and dissolved oxygen in a flow injection system, was proposed for the determination of phenobarbital. The chemiluminescence intensity responded to the concentration of phenobarbital linearly ranging from 0.05 to 10 ng⋅ml-1 with the detection limit of 0.02 ng⋅ml-1 (3σ). At a flow rate of 2.0 ml⋅min-1, a complete determination of phenobarbital, including sampling and washing, could be accomplished in 0.5 min, offering the sampling efficiency of 120 h-1 accordingly. The method was applied successfully in an assay of PB for pharmaceutical preparations, human urine and serum without any pretreatment with recovery from 95.7 to 106.7% and RSDs of less than 3.0%.


1995 ◽  
Vol 118 (6) ◽  
pp. 1211-1215 ◽  
Author(s):  
Kunio Fujiwara ◽  
Hiroshi Kanetake ◽  
Koichi Furukawa ◽  
Yukinobu Masuyama ◽  
Gang Bai ◽  
...  

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