Frequently Asked Questions - How to do a COVID-19 Antigen Self-Test?

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Frequently Asked Questions

Would you like to learn about rapid diagnostic tests, COVID-19 and our products? Here are the frequently asked questions as your guide for your journey.
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About Rapid Diagnostic Tests

What are rapid antigen tests (RAT)?

Rapid antigen tests (RATs) refer to quick point-of-care diagnostic tests which are commonly used for the detection of the presence of viral antigens of interest currently SARS-CoV-2 (COVID-19) in human samples. These lateral flow immunoassay devices are able to identify of a current COVID-19 infection after the initial exposure to the virus or after the onset of symptoms. The portable single-use sample collection device eliminates the need for laboratory testing, and the results are available within 15 minutes. Rapid antigen test kits, therefore, are generally less expensive and quicker.

What are rapid antibody tests?

Rapid Antibody Tests refer to quick point-of-care diagnostic tests which are commonly used for the detection of the presence of IgG/IgM antibodies against virus of interest currently SARS-CoV-2 (COVID-19) in human samples. These lateral flow immunoassay devices are able to identify of a current COVID 19 infection after the onset of symptoms. The portable single-use sample collection device eliminates the need for laboratory testing, and the results are available within 15 minutes.

What is polymerase chain reaction (PCR) test?

To detect genetic material from a specific organism, such as a virus, a polymerase chain reaction (PCR) test is used. If you are infected at the time of the test, the test will identify the presence of a virus of interest currently SARS-CoV-2 (COVID-19). Even if you are no longer infected, the test may identify viral remnants.

What is an antigen?

Antigens are substances that cause the immune system to generate antibodies against them. Antigens are any foreign invaders, including infections (bacteria and viruses), chemicals, poisons, and pollens. Normal biological proteins can become self-antigens in diseased situations.

What is an antibody?

Antibodies (Ab), also known as immunoglobulins (Ig), are big, Y-shaped proteins that help the immune system recognize and destroy foreign substances like bacteria and viruses. The antigen, which is a unique molecule of the pathogen, is recognized by the antibody.

What are the differences between a polymerase chain reaction (PCR) test, antigen test and antibody test?

Both rapid antigen and rapid antibody tests are lateral flow (cassette) tests, however PCR tests require a lab environment and lab equipment for working. This difference also mirrors to the required time for results: usually rapid antigen and antibody tests give results within 30 minutes while PCR test give results within 6-8 hours. There are also differences in term of sample they use. Although both PCR tests and rapid antigen tests are viral tests; they use different parts of virus of interest: an antigen test identifies particular proteins of the virus, a PCR test detects the genetic material of virus. An antibody test determines if you have generated antibodies against the viral illness of interest after being exposed to the virus.

Why we need rapid diagnostic tests (RDT)?

Rapid diagnostic tests (RDT) allow us to screen the presence of disease of interest in a very short time, comparing with the polymerase chain reaction (PCR) test. This advantage provides us that screening a greater number of individuals in less time. In the case of a global pandemic like COVID-19, it is a critical advantage. Because many of the symptoms of COVID-19 are similar to those of the flu, the common cold, and other illnesses, a test is necessary to determine whether or not someone has COVID-19. Symptoms might occur 2 to 14 days after viral infection and vary from moderate to severe disease. Some persons who have been afflicted do not show any signs of infection.

What does “sensitivity” mean? What does “specificity” mean?

The capacity of a test to identify a person with illness as positive is referred to as sensitivity. A highly sensitive test produces fewer false negative findings, resulting in fewer cases of illness being overlooked. A test’s specificity refers to its capacity to label someone who does not have an illness as negative.

Who should use rapid diagnostic tests (RDT)?

These tests are designed for diagnosis of viral infection of interest currently for SARS-CoV-2 infection. One who suspected as patient or one who show symptoms including both adults and children could use these tests for the diagnosis of infections to control the spread and to take medical care. These tests should be applied under adult surveillance for screening children.

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About COVID-19

What is COVID-19?

COVID-19 is an infectious respiratory disease caused by the SARS-CoV-2 coronavirus, which was recently found. Corona is represented by the letter CO, virus by the letter VI, and illness by the letter D.

What are the symptoms of COVID-19?

Fever, cough, and exhaustion are the most frequent symptoms. Shortness of breath, chest discomfort or pressure, muscular or body pains, headache, loss of taste or smell, disorientation, sore throat, congestion or runny nose, diarrhea, nausea and vomiting, stomach pain, and skin rashes are only few of the other symptoms. Infants may have difficulties eating in addition to these symptoms. COVID-19 can make children of any age sick. While children and adults exhibit comparable symptoms, children are more likely to have a milder disease than adults. Difficulty breathing/fast or shallow breathing (also grunting, inability to breastfeed in infants), blue lips or face, chest pain or pressure, confusion, inability to awaken/not interacting, inability to drink or keep down any liquids, and severe stomach pain are all symptoms that require immediate medical attention.

How does COVID-19 spread?

When an infected person coughs, sneezes, speaks, sings, or breathes, the virus can spread in tiny droplets from their lips or nose. People can be infectious whether they have symptoms because these particles range in size from larger respiratory droplets to tiny aerosols. According to the data thus far, the virus transmits mostly amongst persons who are near one another, generally within 1 meter. When virus-containing aerosols or droplets are breathed or come into direct contact with the eyes, nose, or mouth, a person can get infected. The virus can also spread in cramped and/or poorly ventilated interior environments, where people tend to spend longer amounts of time. Indoor places are riskier than outside locations, especially those with insufficient ventilation.  People can also become infected by touching their lips, nose, or eyes after encountering virus-infected surfaces. Experts are still investigating how COVID-19 spreads and which conditions are the most dangerous.

Can SARS-CoV-2 be detectable without symptoms?

Yes, rapid antigen test and polymerase chain reaction (PCR) test can be used for detection of SARS-CoV-2 cases without symptoms, which can provide to determine asymptomatic individuals.

Can someone who has had COVID-19 become infected again?

The risk of reinfection in the short term (within 90 days) appears to be minimal. However, there have lately been reports of rare occurrences of reinfection. We don’t know how often reinfection happens due to a lack of community testing and surveillance.

Our COVID-19 Products

Can rapid tests screen new variants of SARS-CoV-2?

COVID-19 viral variations can continually be tracked by rapid antigen tests. Our antigen tests (Rapid Antigen Test Kit (Professional Use) Nasopharyngeal, Rapid Antigen Test Kit (Professional Use) Nasal, Rapid Antigen Test Kit (Self-Test), Saliva Swab Antigen Test Kit, Saliva Antigen Test Kit and SARS-CoV-2 Ag & FLU A/B Combo Test Kit) can also identify them. We have gone through most of the current variations (B.1.1.7 (Alpha), B.1.351 (Beta) E484K mutation B1.617.2 (Delta), P.1 (Gamma), C.37 (Lambda)) and are certain that our tests will still find them. These tests look for proteins required for the COVID-19 virus to survive.

What is a variant?

Viruses are constantly evolving, and this might result in the emergence of a new variety, or strain, of the virus. Behavior of a virus is typically unaffected by a variation. However, they can make it act in a variety of ways at times.

I have symptoms, is there such a product I can sure about whether I have COVID-19 or influenza?

If you have COVID-19 symptoms and are unsure whether you have SARS-CoV-2 or influenza, RapidFor™ SARS-CoV-2 Ag & Flu A/B Antigen Combo Test Kit at your service. You may monitor for both influenza and SARS-CoV-2 antigens with the RapidFor™ SARS-CoV-2 Ag & Flu A/B Antigen Combo Test Kit. COVID-19 is a respiratory infection caused by the novel coronavirus SARS-CoV-2 that exhibits symptoms similar to influenza. Because COVID-19 is a reportable disease, it is important that a patient who exhibits significant disease symptoms such as fever, dry cough, sore throat, headache, joint pain, and fatigue has a definite diagnosis as soon as possible.

How can I get more comfortable test for my child and elderly family members, especially without swab usage?

With the saliva antigen test, you have not to use swabs anymore. With our RapidFor™ Saliva Antigen Test Kit, you have all the advantages of antigen tests without any uncomfortable situation caused from swab usage.

How can I understand if I have been infected by SARS-CoV-2 in the past?

With rapid antibody tests, you can understand that you have infected by SARS-CoV-2 in the past. If you get a positive test result for IgG antibody, which can stay in the blood and provide long-term immunization against SARS-CoV-2 (COVID-19), it suggests you had previously been infected with COVID-19. With our RapidFor™ SARS-CoV-2 Rapid IgG/IgM Test Kit, you can understand if you have been infected by SARS-CoV-2 in the past and also now; while IgG antibodies shows long-term immunity, IgM antibodies shows initial immunity response against SARS-CoV-2, which means you are in the beginning of the infection.

After vaccination, is there such a product I can monitoring my immunity?

RapidFor™ SARS-CoV-2 Neutralizing Antibody Test Kit allows you to track your immunity following vaccination. A positive test result indicates that you have established long-term immunity against SARS-CoV-2 (COVID-19) infection as a consequence of IgG antibodies that can remain in the blood and provide long-term protection. After immunization, the neutralizing test is used to identify the development of IgG antibodies against SARS-CoV-2. Antibodies against BioNTech/Pfizer, Moderna, AstraZeneca, Johnson&Johnson, and Sinovac Life Sciences vaccines that trigger an immune response to the spike protein have been discovered.

How frequently should I use rapid tests for screening SARS-CoV-2?

You should test every day for a few days to check whether you are infected, if you have been in contact with someone who has tested positive for COVID-19 or if you have a COVID-19 symptom. Because the virus grows up in your body over time, it is possible that the test misses the virus in the very early stages of infection. Testing should be done on a regular basis.

What is the price of your COVID-19 rapid diagnostic tests, and how can I buy them?

The price of our COVID-19 products are dependent on the quantity you request. Please feel free to contact us about your demand. We will send you a feedback as soon as possible.

Antigen Test Kit
Antigen Test Kit
Antigen-Test-Kit-Self-Test
Antibody Test Kit
AboutVITROSENS
SARS-CoV-2 Antigen Rapid Test Kit, COVID-19 Test Manufacturer.
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AboutVITROSENS
SARS-CoV-2 Antigen Rapid Test Kit, COVID-19 Test Manufacturer.
vitrosens.com
InternationalPresence
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Follow USVITROSENS on Social Media
For our updated news and products follow us on social media.

Copyright by Vitrosens Biotechnology. All rights reserved.

Copyright by Vitrosens Biotechnology. All rights reserved.