Home > Articles > Published articles > Lateral flow assay modified with time-delay wax barriers as a sensitivity and signal enhancement strategy |
Date: | 2020 |
Abstract: | The ease of use, low cost and quick operation of lateral flow assays (LFA) have made them some of the most common point of care biosensors in a variety of fields. However, their generally low sensitivity has limited their use for more challenging applications, where the detection of low analytic concentrations is required. Here we propose the use of soluble wax barriers to selectively and temporarily accumulate the target and label nanoparticles on top of the test line (TL). This extended internal incubation step promotes the formation of the immune-complex, generating a 51. 7-fold sensitivity enhancement, considering the limit of quantification, and up to 96% signal enhancement compared to the conventional LFA for Human IgG (H-IgG) detection. |
Grants: | Ministerio de Economía y Competitividad PCIN-2016-066 Ministerio de Economía y Competitividad MAT2017-87202-P Ministerio de Economía y Competitividad SEV2201320295 |
Note: | Altres ajuts: this work is also funded by the CERCA Program/Generalitat de Catalunya |
Rights: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
Language: | Anglès |
Document: | Article ; recerca ; Versió sotmesa a revisió |
Subject: | Lateral flow ; Sensitivity enhancement ; Wax barrier ; Point-of-Care ; Optical biosensor |
Published in: | Biosensors & bioelectronics, Vol. 168 (Nov. 2020) , art. 112559, ISSN 1873-4235 |
Preprint 14 p, 946.3 KB |