Ultrasensitive Measurement of Both SARS-CoV-2 RNA and Antibodies from Saliva.
Anal Chem
; 93(13): 5365-5370, 2021 04 06.
Article
in English
| MEDLINE | ID: covidwho-1147379
Preprint
This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
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This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
See preprint
ABSTRACT
Tests for COVID-19 generally measure SARS-CoV-2 viral RNA from nasal swabs or antibodies against the virus from blood. It has been shown, however, that both viral particles and antibodies against those particles are present in saliva, which is more accessible than both swabs and blood. We present methods for highly sensitive measurements of both viral RNA and antibodies from the same saliva sample. We developed an efficient saliva RNA extraction method and combined it with an ultrasensitive antibody test based on single molecule array (Simoa) technology. We apply our test to the saliva of patients who presented to the hospital with COVID-19 symptoms, some of whom tested positive with a conventional RT-qPCR nasopharyngeal swab test. We demonstrate that combining viral RNA detection by RT-qPCR with antibody detection by Simoa identifies more patients as infected than either method alone. Our results demonstrate the utility of combining viral RNA and antibody testing from saliva, a single easily accessible biofluid.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Saliva
/
RNA, Viral
/
COVID-19 Testing
/
SARS-CoV-2
/
COVID-19
/
Antibodies, Viral
Type of study:
Diagnostic study
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Anal Chem
Year:
2021
Document Type:
Article
Affiliation country:
Acs.analchem.1c00515
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