Coronavirus Ag Rapid Test Cassette (Swab)​

SARS-CoV-2 Antigen Detection
For Diagnosis of COVID-19 Infection​

COVID-19 Rapid Antigen Testing​

As COVID-19 continues to spread globally, rapid testing has become more important for diagnosing patients infected with SARS-CoV-2. When timely decisions are needed or when RT-PCR testing is inaccessible, this COVID Rapid Ag test complements RT-PCR testing in laboratory and point-of-care settings.1

As part of its COVID-19 portfolio, Bio-Rad offers this rapid, in vitro immunochromatographic assay for the qualitative detection of nucleocapsid protein antigen from SARS-CoV-2 in nasal or nasopharyngeal swab specimens, accompanied by its dedicated control swabs kit.

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Discover other COVID-19 assay and research solutions from Bio-Rad

  • Platelia SARS-CoV-2 Total Ab assay
  • SARS-CoV-2 RT-PCR assay kit
  • Real-Time PCR instruments and reagents
  • SARS-CoV-2 standards
  • SARS-CoV-2 ddPCR kit (CE-IVD)
  • ddPCR instruments and reagents
  • BioPlex 2200 SARS-CoV-2 IgG panel​
Learn more

Coronavirus Ag Rapid Test Cassette (Swab) – At a Glance​

High Performance for Both Specimen Types

nasal swab
nasopharyngeal swab
limit of detection

Rapid Test: Results in 15 Min


Short sample preparation


Fast test procedure


Easy result interpretation

Antigen Detection

nucleocapsid protein

Nucleocapsid Protein (N) antigen from SARS-CoV-2


ce-ivd icon


For Rapid, Reliable Diagnosis of COVID-19​​​

Qualitative Detection of SARS-Cov-2 Nucleocapsid Antigen​

The Coronavirus Ag Rapid Test is a rapid test for the qualitative detection of nucleocapsid protein antigen from SARS-CoV-2 in direct nasal or nasopharyngeal specimens​.

virus and nucleocapsid protein

Rapid Test Advantage

Rapid antigen tests offer multiple benefits in comparison to RT-PCR tests for the detection of SARS-CoV-2.1 The Coronavirus Ag Rapid Test offers an advantage over RT-PCR with rapid 15 minute time to results and the ability to bring testing closer to patients tested and to facilitate quick patient clinical care decisions.​

Rapid Testing Use Cases1

The test is beneficial for the early detection and isolation of SARS-CoV-2 for:

  • ​triage and mitigation of infection
  • prompt clinical management of COVID-19 patient cases
  • control of transmission through early detection of cases, contact tracing, and population-wide testing​
  • identification of clusters or outbreaks
magnifying glass with people icons

Sensitive Detection of COVID-19 Disease

The Coronavirus Ag Rapid Test is sensitive enough to detect patients with a high viral load during early onset of symptoms. This includes, for example, asymptomatic, pre-symptomatic, or early symptomatic cases, along with low RT-PCR cycle threshold cases, which likely account for a significant number of transmissions.1

COVID-19 Detection2

covid-19 detection graph

Rapid antigen tests
detect the presence of viral proteins and can return positive results when a person is most infectious.

PCR-based tests
can detect small amounts of viral genetic material, so a test can be positive long after a person stops being infectious.

Antibody tests
detect the body's immune response to the virus and are not effective at the earliest phase of infection.

High Performance​

The Coronavirus Ag Rapid Test demonstrated high performance for specificity and sensitivity in a study with "real-world" patients. The rigorous evaluation at seven test sites included a total of 237 fresh nasal swab specimens and 865 fresh nasopharyngeal swab specimens collected and tested in a randomized, blinded study.

Using highly sensitive, FDA Emergency Use Authorized RT-PCR tests, each test site obtained performance results well above the WHO minimum requirements.3

swabs and limit of detection

3 Quick Steps

In just three steps, the Coronavirus Ag Rapid Test detects the presence or absence of SARS-CoV-2 antigen in specimens collected at the first onset of symptoms.​


Short sample preparation

Patient sample or
control swab +
10 drops extraction buffer​​

short sample preparation graphic

Fast test procedure

4 drops sample solution

fast test procredure graphic

Easy result interpretation


easy result interpretation graphic


Coronavirus Ag Rapid Test Cassette (Swab)​

coronavirus ag rapid test cassette (swab)

Detection of SARS-CoV-2 Antigen

The Coronavirus Ag Rapid Test is a high performance immunochromatographic test for the detection of the SARS-CoV-2 antigen for use in diagnosing COVID-19 infection.

This CE marked test provides a quick and easy tool for detecting SARS-CoV-2 antigen in the early stages of COVID-19 infection while offering a robust level of performance.

  • CE marked
  • 15 min time to result
  • Nasal or nasopharyngeal specimens​
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COVID-19 Antigen Control Kit

covid-19 antigen control kit

Dedicated Control Swabs Kit

This external qualitative quality control allows laboratories to validate test kit lots and check the correct test procedure for the Coronavirus Ag Rapid Test Cassette (Swab).​

Provided in a separate kit, the control swabs can be used in accordance with your laboratory needs and local requirements (e.g., to validate a new test kit, new test lot, new operator).​​

Kit Contents:

  • 10 positive control swabs
  • 10 negative control swabs​
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Need a rapid, reliable SARS-CoV-2 test for detection in nasal or nasopharyngeal swab specimens?​

Contact a Bio-Rad representative today.

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Other SARS-CoV-2 Testing Solutions

As a leader and contributor in the fight against COVID-19, Bio-Rad offers this Coronavius Ag Rapid Test to complement our other SARS-CoV-2 testing and research solutions which include:

  • Platelia SARS-CoV-2 Total Ab assay
  • SARS-CoV-2 RT-PCR assay kit
  • Real-Time PCR instruments and reagents
  • SARS-CoV-2 standards
  • SARS-CoV-2 ddPCR kit (CE-IVD)
  • ddPCR instruments and reagents
  • BioPlex 2200 SARS-CoV-2 IgG panel​
Learn more
covid-19 hands graphic

Infectious Disease Testing Solutions

quality control icon

Quality Control

Bio-Rad quality control solutions feature QC products, data management tools and services covering hundreds of analytes and thousands of methods.

Learn more
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BRiCare Support and Monitoring

Bio-Rad's instrument monitoring application for remote service and support. BRiCare is available for all of Bio-Rad's diagnostic instruments for continuous monitoring and remote sessions with an instrument's computer.

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1. European Centre for Disease Prevention and Control (2020). Options for the use of rapid antigen tests for COVID-19 in the EU/EEA and the UK. ECDC Stockholm. Accessed January 13, 2021.

2. Guglielmi G (2020). Fast coronavirus tests: what they can and can't do. Nature 585, 496-498. doi:

3. WHO (2020). Antigen-detection in the diagnosis of SARS-CoV-2 infection using rapid immunoassays: Interim guidance. Accessed December 18, 2020.