Which Is Better For The Covid 19 Test RT-PCR Test Or The Antigen Test?


Both tests are useful when the person is symptomatic, and they may the first step in a return-to-work screening. However, an antigen test has several drawback. RT-PCR is a very accurate way to detect COVID infection, but it has limit sensitivity. An antigen test requires the presence of a viral antigen, which the immune system recognizes via a blood sample.

RT-PCR Test is more reliable, but the antigen test is quicker. A positive result from an antigen test requires a doctor’s instruction, and a positive result from an antigen test increases the risk of false-negative results. Although the antigen test is more accurate, it is not as fast. In some cases, a positive antigen test might indicate that a person is not infect. Therefore, a doctor will likely recommend a Covid 19 RT-PCR to confirm the negative results.


An antigen test is more sensitive than PCR, but it may have more false-negative results. Rapid antigen tests also have a higher risk of false positives, but the higher sensitivity means fewer false positives. An antigen-positive result could a sign of coronavirus infection. If the results are unclear, the patient should undergo a PCR test to confirm the diagnosis.

Detect The Virus

The RT-PCR Test is less accurate than the antigen test. The antigen test can result in false positives. In some cases, a positive antigen test is inaccurate and can indicate an infect person with the disease. The RT-PCR test will confirm the positive result and determine the cause of the infection. This is especially important if the person has an infectious condition or suffers from a chronic illness.

The RT-PCR is the better of the two methods. The RT-PCR detects the virus’ genetic material. It requires a blood sample that is collect from the nasal region. The RNA of the viral DNA is then amplified and analyze by the PCR. Its results are consider accurate if the instructions are follow correctly.


The RT-PCR is less accurate than the antigen test and can produce false-negative results. In addition, the RT-PCR has the advantage of more sensitive but has some limitations. It is often use to detect the genetic material in the lungs. The RT-PCR can give false-negative and positive results for the disease in a few days.

RT-PCR Method

If the RT-PCR is negative, the patient should follow CDC guidelines for quarantining. If the antigen test is positive, the patient should isolate and vaccinate. Alternatively, the person should undergo a validator NAAT to determine the test’s sensitivity. The CDC has recommend that the RT-PCR perform in a hospital where close contacts have infect.

RT-PCR Test is more sensitive than the antigen test, and it detects the genetic material of the virus. The RT PCR has a lower sensitivity than the antigen test, leading to false-negative results in some cases. And RT PCR has a higher sensitivity, but fewer patients can identify.

The PCR Test method is not very accurate. But the antigen-positive test may be more specific and less sensitive than the antigen-negative test. It is not possible to tell whether the person is infectious or not. As long as the patient is healthy and up-to-date on vaccinations, they may not need further confirmation.