Ultrasensitive detection of SARS-CoV-2 RNA and antigen using single-molecule optofluidic chip.
APL Photonics
; 6(6)2021 Jun.
Article
in English
| MEDLINE | ID: covidwho-1258618
ABSTRACT
Nucleic acids and proteins are the two most important target types used in molecular diagnostics. In many instances, simultaneous sensitive and accurate detection of both biomarkers from the same sample would be desirable, but standard detection methods are highly optimized for one type and not cross-compatible. Here, we report the simultaneous multiplexed detection of SARS-CoV-2 RNAs and antigens with single molecule sensitivity. Both analytes are isolated and labeled using a single bead-based solid-phase extraction protocol, followed by fluorescence detection on a multi-channel optofluidic waveguide chip. Direct amplification-free detection of both biomarkers from nasopharyngeal swab samples is demonstrated with single molecule detection sensitivity, opening the door for ultrasensitive dual-target analysis in infectious disease diagnosis, oncology, and other applications.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Type of study:
Diagnostic study
/
Randomized controlled trials
Language:
English
Year:
2021
Document Type:
Article
Affiliation country:
5.0049735
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