Comparative diagnostic utility of SARS-CoV-2 rapid antigen and molecular testing in a community setting

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BACKGROUND: SARS-CoV-2 antigen-detection rapid diagnostic tests (Ag-RDTs) have become widely utilized but longitudinal characterization of their community-based performance remains incompletely understood.

METHODS: This prospective longitudinal study at a large public university in Seattle, WA utilized remote enrollment, online surveys, and self-collected nasal swab specimens to evaluate Ag-RDT performance against real-time reverse transcription polymerase chain reaction (rRT-PCR) in the context of SARS-CoV-2 Omicron. Ag-RDT sensitivity and specificity within 1 day of rRT-PCR were evaluated by symptom status throughout the illness episode and Orf1b cycle threshold (Ct).

RESULTS: From February to December 2022, 5,757 participants reported 17,572 Ag-RDT results and completed 12,674 rRT-PCR tests, of which 995 (7.9%) were rRT-PCR-positive. Overall sensitivity and specificity were 53.0% (95% CI: 49.6-56.4%) and 98.8% (98.5-99.0%), respectively. Sensitivity was comparatively higher for Ag-RDTs used 1 day after rRT-PCR (69.0%), 4 to 7 days post-symptom onset (70.1%), and Orf1b Ct ≤20 (82.7%). Serial Ag-RDT sensitivity increased with repeat testing ≥2 (68.5%) and ≥4 (75.8%) days after an initial Ag-RDT-negative result.

CONCLUSION: Ag-RDT performance varied by clinical characteristics and temporal testing patterns. Our findings support recommendations for serial testing following an initial Ag-RDT-negative result, especially among recently symptomatic persons or those at high-risk for SARS-CoV-2 infection.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - year:2024

Enthalten in:

The Journal of infectious diseases - (2024) vom: 26. März

Sprache:

Englisch

Beteiligte Personen:

Kim, Ashley E [VerfasserIn]
Bennett, Julia C [VerfasserIn]
Luiten, Kyle [VerfasserIn]
O'Hanlon, Jessica A [VerfasserIn]
Wolf, Caitlin R [VerfasserIn]
Magedson, Ariana [VerfasserIn]
Han, Peter D [VerfasserIn]
Acker, Zack [VerfasserIn]
Regelbrugge, Lani [VerfasserIn]
McCaffrey, Kathryn M [VerfasserIn]
Stone, Jeremey [VerfasserIn]
Reinhart, David [VerfasserIn]
Capodanno, Benjamin J [VerfasserIn]
Morse, Stephen S [VerfasserIn]
Bedford, Trevor [VerfasserIn]
Englund, Janet A [VerfasserIn]
Boeckh, Michael [VerfasserIn]
Starita, Lea M [VerfasserIn]
Uyeki, Timothy M [VerfasserIn]
Carone, Marco [VerfasserIn]
Weil, Ana [VerfasserIn]
Chu, Helen Y [VerfasserIn]

Links:

Volltext

Themen:

Ag-RDT
COVID-19
Community setting
Concordance
Journal Article
Omicron
PCR
Self-tests
Sensitivity
Serial testing
Symptom status

Anmerkungen:

Date Revised 26.03.2024

published: Print-Electronic

Citation Status Publisher

doi:

10.1093/infdis/jiae150

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370212339