| Place of Origin: | China |
|---|---|
| Brand Name: | Ascentet |
| Certification: | CE FDA TGA |
| Model Number: | OEM |
| Minimum Order Quantity: | 10000pcs |
| Price: | $1.50-2.0/pcs |
| Packaging Details: | 25tests/box 1test/box |
| Delivery Time: | 5-20 days |
| Payment Terms: | T/T, Western Union, MoneyGram |
| Supply Ability: | 100000pcs/day |
| Sample Collection: | Nasal Swab | Package: | 25pcs/box, 1pcs/box |
|---|---|---|---|
| Use: | Fast Check Of Coronavirus | Reading Time: | In 15 Mins |
| Method: | Colloidal Gold Assay | Qualitative: | Qualitative Determination Of Covid-19 |
| High Light: | 15 Mins Antigen Swab Self Test Kit,Fast Check Covid Test Kit |
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Test Principle
This kit uses immunochromatography. The test card contains: 1) recombinant SARS-COV-2 antigens and quality control antibodies, and both are labeled with colored microspheres; 2) two detection lines (G and M lines) and a quality control line (C line) are fixed on nitrocellulose membrane, M line is fixed with monoclonal anti-human IgM antibody for detecting SARS-COV-2 IgM antibody, G line is fixed with monoclonal anti-human IgG antibody for detecting SARS-COV-2 IgG antibody, and C-line is fixed with quality control antibody.
When an appropriate amount of the test sample is removed to the sample hole of the test card, the sample will move forward along the test card with the reaction of capillary. If the sample contains IgM antibody, the antibody will bind to the colored microsphere-labeled SARS-COV-2 antigen. The immune complex will be captured by the anti-human IgM antibody immobilized on the membrane and form a red M line, which represents a positive test result of SARS-COV-2 IgM antibody test.
If the sample contains IgG antibody, the antibody will bind to the colored microsphere-labeled SARS-COV-2 antigen, and the immune complex will be captured by the antibody immobilized on the membrane and form a red G line, which indicates a positive test result of SARS-COV-2 IgG antibody test.
If neither the G line nor the M line shows color, the test result is negative. The card also contains a quality control line C line. No matter G or M detection line shows color or not, the quality control C line in red should always be visible. The quality control line is the color band of the quality control antibody immune complex. If the C line does not appear, it indicates that the test result is invalid, and thus a re-test is required with an unused test card.
Something you need to learn about:
1) What is the difference between an antigen test and a molecular test?
An antigen test detects specific proteins on the surface of the virus. These tests are quicker and less expensive, but have a higher chance of missing an active infection, according to the FDA.
A molecular (PCR or polymerase chain reaction) test detects the virus’s genetic material. These tests require a more complex technology to get results, and it usually takes a day or two to get those results (depending on lab capacity, results may take up to a week).
If an antigen test shows a negative result and you have reason to believe you may have the virus (because of symptoms or exposure), your doctor may order a molecular test to confirm the results.
2) Which tests are more accurate?
No test is 100% accurate, but the molecular tests are considered to be more accurate than the antigen tests, according to available research.
According to the FDA, an antigen test cannot “definitively rule out active coronavirus infection,” but positive results are “highly accurate” (negative results may require a confirmation test).
Harvard Medical School wrote in August that the reported rate of false negatives with molecular testing is as low as 2% and as high as 37%. A molecular test using a deep nasal swab will have fewer false negative results than samples from throat swabs or saliva, they say.
For antigen testing, Harvard noted that the reported rate of false negative results can be as high as 50%, but that the FDA has granted emergency use authorization for a more accurate antigen test.
In general, some of the issues that may affect the accuracy of a test include ineffective swabbing, contamination or mishandling of the sample, or problems with the testing chemicals, according to the FDA.
3) If antigen tests are less accurate, why would we use them?
Experts say the value in the rapid antigen tests is in the frequency of the testing rather than the accuracy, with repeated testing recommended. According to Science, getting a false negative in an antigen test two or three times in a row is rare. This strategy lines up with the NPR report mentioned above, which would employ daily testing of those in high-risk areas.
4) Who must be tested for COVID-19?
As per the Minister’s Directive: COVID-19: Long-Term Care Home Surveillance Testing and Access to Homes (Minister’s Directive) effective January 8, 2021, all staff, student placement and volunteers working in long-term care homes must be tested regularly in accordance with the Minister’s Directive, unless the exception for individuals who have previously had laboratory confirmed COVID-19 applies. The testing requirements in the Minister’s Directive include all individuals working in long-term care homes who are: • Staff as defined in the Long-Term Care Homes Act, 2007 • Volunteers as defined in the Long-Term Care Homes Act, 2007 • Student placement, meaning any person working in the long-term care home as part of a clinical placement requirement of an educational program of a college or university, and who does not meet the definition of “staff” or “volunteer” under the Long-Term Care Homes Act, 2007. The Minister’s Directive also includes additional testing and documentation requirements for general visitors, caregivers and support workers.
