Two kinds of tests are available for coronavirus (COVID-19): virus tests [antigen tests, polymerase chain reaction (PCR)] and antibody tests.

  • Virus tests to check if you have a current infection.

It checks for the presence of SARS-CoV-2, the virus that causes coronavirus, in your respiratory system. In most cases, results from point-of-care tests may be available at the testing site in less than an hour and others must be sent to a laboratory for analysis that can take a few days.

  • Antibody tests to check if you had a past infection.

It may not show if you have a current coronavirus infection because it can take 1–3 weeks after infection for your body to make antibodies. In most cases, results must be taken from blood samples and sent to a lab for analysis.

For more information on the coronavirus, please visit the Centers for Disease Control and Prevention (CDC) and Texas Department of State Health Services website below.

CDC recommendations on how to test for coronavirus

Texas Department of State Health Services explanations on coronavirus Testing: PCR, Antigen, and Antibody Tests

To fight against the spread of coronavirus, TaiDoc dedicates in developing a rapid antigen test that can be used for the detection of SARS-CoV-2 in nasopharyngeal secretions.

COVID19-Antigen TD-4531

TD-4531

COVID-19 Antigen Rapid Test

  • Fast results in 15 minutes
  • Visual interpretation
  • Two colored indicator on test cassette
  • Technical cooperation with Taiwan’s Academia Sinica

REF: https://iptt.sinica.edu.tw/posts/139911

Specifications

Test Principle Lateral Flow Chromatographic Immunoassay
Target AntigenSARS-CoV-2 Nucleocapsid Protein
Sample TypeFresh Naspharyngeal Swab Specimen
Limit of Detection (LoD)1.26 x10^2TCID50 per mL
Storage condition2-30℃/36-86℉
Cross-Reactivity & InterferencesViruses, Bacteria and Interferences tested do not cross-react or interfere
Reaction Time15 minutes

Package Contents

20-Test Kit/Box

  1. Sterile Nasopharyngeal Swabs ×20
  2. Test Cassette ×20
  3. Extraction Tube ×20
  4. Extraction Tube Dripper ×20
  5. Extraction Buffer ×2

Interpretation of Results

Interpretation of Results

ResultInterpretation
Antigen testPositiveMost likely* you DO currently have an active COVID-19 infection.
NegativeMost likely* you DO NOT currently have an active COVID-19 infection.
Antibody testPositiveYou likely* have HAD a COVID-19 infection.
NegativeYou likely* NEVER HAD (or have not yet developed antibodies to) COVID-19 infection.
BOTH(antigen and antibody test)Antigen Positive,
Antibody Positive
Most likely* you DO currently have an active COVID-19 infection
Antigen Positive,
Antibody Negative
Most likely* you DO currently have an active COVID-19 infection
Antigen Negative,
Antibody Positive
You likely* have HAD and RECOVERED FROM a COVID-19 infection.
Antigen Negative,
Antibody Negative
You likely* have NEVER HAD a COVID-19 infection.

*No test is ever perfect. All tests occasionally result in false positive or false negative results. Sometimes the results are not definitive. For this and other reasons, results should always be reviewed by healthcare professionals.

Note. Data for interpretation of results from CDC (2020).
For more information on the COVID–19, please visit the Centers for Disease Control and Prevention (CDC) website below.

CDC guidance on interpreting COVID-19 Test results

Demonstration of Test Procedure