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Fast and sensitive interferon-γ assay using supercritical angle fluorescence


Winterflood, Christian; Ruckstuhl, Thomas; Seeger, Stefan (2013). Fast and sensitive interferon-γ assay using supercritical angle fluorescence. Biosensors, 3(1):108-115.

Abstract

We present an immunoassay for Interferon-γ (IFN-γ) with a limit of detection of 1.9 pM (30 pg/mL) and a linear concentration range spanning three orders of magnitude. The developed one-step assay takes only 12 min and can replace the time-consuming and labor-intensive enzyme-linked immunosorbent assay (ELISA). The solid-phase sandwich assay is performed on a new measurement system comprising single-use test tubes and a compact fluorescence reader. The polymer tubes contain an optical configuration for the detection of supercritical angle fluorescence, allowing for highly sensitive real-time binding measurements.

Abstract

We present an immunoassay for Interferon-γ (IFN-γ) with a limit of detection of 1.9 pM (30 pg/mL) and a linear concentration range spanning three orders of magnitude. The developed one-step assay takes only 12 min and can replace the time-consuming and labor-intensive enzyme-linked immunosorbent assay (ELISA). The solid-phase sandwich assay is performed on a new measurement system comprising single-use test tubes and a compact fluorescence reader. The polymer tubes contain an optical configuration for the detection of supercritical angle fluorescence, allowing for highly sensitive real-time binding measurements.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Language:English
Date:8 February 2013
Deposited On:13 Mar 2013 12:03
Last Modified:18 Aug 2016 07:47
Publisher:MDPI Publishing
ISSN:2079-6374
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.3390/bios3010108

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