# COVID-19 Antigen Test: All You Need To Know

By admin / October 6, 2021

There are various tests available to diagnose or screen COVID-19 infection, and the antigen test is one of them.

It looks for antigens — a type of protein — to diagnose infection. A sample for the tests is collected through a throat or nasal swab.

Almost all centers for COVID testing in Tustin offer the antigen test and provide results within 15 minutes.

Let’s understand more about this test!

## COVID-19 Antigen Test

The antigen tests help in understanding whether the person has COVID-19. It is mainly used in screening a COVID-19 infection.

Diagnostic tests are used to detect an infection in a person who has symptoms or has exposure to the disease. For COVID-19, reverse transcription-polymerase chain reaction (RT-PCR), or just PCR, is the gold standard for diagnosis.

When the mentioned tests are not available, the COVID-19 antigen test can help diagnose infection in a symptomatic patient. However, the antigen test has a high risk of false-negative results. This means you can get a negative result even if you have an active infection.

Screening is looking for an infection in people who don’t have symptoms. As the antigen tests provide faster results at a relatively lower cost, it is used in screening masses to curb the spread of COVID-19 infection. However, follow-up tests, such as PCR, may be needed to confirm the diagnosis.

## When Should One Get The Antigen Test?

As mentioned before, the antigen test is usually used for diagnosis when PCR tests are unavailable. THe COVID-19 antigen test is often used for screening.

Situations where screening may help include:

• When you have attended a large gathering or been to high-risk places
• When you have come in close contact with an infected person
• When you work or live in places where many people live together, such as homeless shelters, correctional facilities, and nursing homes
• When you need proof of a negative test for travel or work.

## How to get tested

Your doctor can prescribe the COVID-10 antigen test. The test is also available without a prescription at health clinics, pharmacies, or for at-home use.

In most cases, the sample is taken, and the results are given at the same location. This is also called point-of-care testing.

Most centers offering fast COVID tests in Tustin can analyze the antigen test within 15 minutes.

However, in some cases, the sample can be sent to a laboratory for analysis.

## Can One Take The Test At Home?

Yes. Kits are available to take the COVID-19 antigen test at home. Some are offered over-the-counter, while others are available with a prescription.

These kits are curated for single-use and provide results within 15 minutes.

## How Much Does The Test Cost?

The COVID-19 antigen tests are comparatively cheaper than other tests, including the PCR test. However, the cost may depend on where the test is conducted and whether your insurance covers it.

At-home kits may range between $25 to$50. If your doctor prescribes it, the test may be covered by your insurance.

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