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Validation of the STANDARD Q COVID-19 antigen test in Vojvodina, Serbia.
Ristic, Mioljub; Nikolic, Natasa; Cabarkapa, Velibor; Turkulov, Vesna; Petrovic, Vladimir.
  • Ristic M; Department of Epidemiology, University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia.
  • Nikolic N; Institute of Public Health of Vojvodina, Novi Sad, Serbia.
  • Cabarkapa V; Institute of Public Health of Vojvodina, Novi Sad, Serbia.
  • Turkulov V; Department of Microbiology with Parasitology and Immunology, University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia.
  • Petrovic V; Faculty of Medicine, Department of Pathophysiology and Laboratory Medicine, University of Novi Sad, University of Novi Sad, Novi Sad, Serbia.
PLoS One ; 16(2): e0247606, 2021.
Article in English | MEDLINE | ID: covidwho-1094070
ABSTRACT

BACKGROUND:

Since COVID-19 pandemic is a global crisis, tests with high sensitivity and specificity are crucial for the identification and management of COVID-19 patients. There is an urgent need for low-cost rapid antigen COVID-19 test with a good diagnostic performance. Although various antigen rapid detection tests are widely available, strong evidence of their usefulness in clinical practice are still limited. Therefore, our aim was to evaluate clinical performance of STANDARD Q COVID-19 Ag Test (SD Biosensor, Gyeonggi-do, South Korea).

METHODS:

The performance of the STANDARD Q COVID-19 Ag Test for the detection of SARS-CoV-2 antigen was evaluated in comparison to RT-qPCR results in 120 symptomatic patients (median age 49, IQR 36-70) who presented to health care facility in Novi Sad, Vojvodina, Serbia.

RESULTS:

Twenty five out of 120 samples have been tested positive using STANDARD Q COVID-19 Ag Test, and all of them were also positive on RT-qPCR. Overall, the STANDARD Q COVID-19 Ag Test showed sensitivity of 58.1% (95% CI 42.1-73.0) but it was higher in the early days of disease, when the highest viral loads were detected. During the first five days after the symptom onset, the sensitivity ranged from 66.7% to 100% and the pooled accuracy and Kappa values were high (0.92 and 0.852).

CONCLUSIONS:

A strong agreement between performance of STANDARD Q COVID-19 Ag Test and RT-qPCR was observed during the first five days of illness, suggesting that this rapid antigenic test can be very useful for COVID-19 diagnosis in the early phase of disease.
Subject(s)

Full text: Available Collection: International databases Database: MEDLINE Main subject: Nasopharynx / COVID-19 Serological Testing / SARS-CoV-2 / COVID-19 / Antigens, Viral Type of study: Diagnostic study / Experimental Studies / Observational study / Prognostic study Limits: Humans / Middle aged Country/Region as subject: Europa Language: English Journal: PLoS One Journal subject: Science / Medicine Year: 2021 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Nasopharynx / COVID-19 Serological Testing / SARS-CoV-2 / COVID-19 / Antigens, Viral Type of study: Diagnostic study / Experimental Studies / Observational study / Prognostic study Limits: Humans / Middle aged Country/Region as subject: Europa Language: English Journal: PLoS One Journal subject: Science / Medicine Year: 2021 Document Type: Article