Rapid Antibody

Est. 1-4 hour results


IgG/IgM Antibody Rapid COVID Test – Orange County

The Rapid Response TM COVID-19 IgG/IgM Test Cassette is a Finger Prick, to detect antibodies after COVID-19 infection.
*Not recommended to test for Active COVID-19 diagnosis.

The Assure Fastep COVID-19 IgG and IgM Rapid Antibody Test Kit is a rapid lateral flow chromatographic immunoassay intended for the qualitative detection and differentiation of IgG and IgM antibodies to SARS-CoV-2 in human venous whole blood, serum, and plasma. Antibodies start developing an average of 1-3 weeks after exposure to the virus.

The Rapid Antibody test is performed and processed on-site. Patients will remain in their cars while the test is done, and our healthcare staff will come to them for convenience and to prevent potential transmission. Same-day COVID testing provides results in 1-4 hours on average. Some rapid COVID tests can have results ready in half an hour or less, depending on volume.

1 x IgG/IgM Rapid Antibody Test – Free with Insurance or CARES ACT


It is recommended to verify your COVID-19 testing benefits with your insurance prior to testing.


Conveniently located at Hoag Hospital Irvine, our COVID test sites serve patients across Orange County and the greater Los Angeles metro area, including Irvine, Lake Forest, Mission Viejo, Santa Ana, Huntington Beach, Newport Beach, Orange, Anaheim, Costa Mesa, Foothill Ranch, Ladera Ranch, Laguna Beach, Laguna Nigel, Dana Point, Rancho Santa Margarita, Coto de Caza, and Aliso Viejo.

No. Antibody tests only detect previous coronavirus infections. If you believe that you currently have COVID-19, including the COVID Delta variant, please schedule a diagnostic test instead. Diagnostic tests include the Rapid Antigen and RT-PCR tests.

If you’ve been exposed to the SARS-CoV-2 virus, your body’s immune system begins learning how to fight against it by producing antibodies. These special proteins are designed to prevent and minimize the danger of future infections. Antibodies typically appear within 1-3 weeks of exposure, which happens either through infection or vaccination. Even if you do not experience COVID symptoms, Antibody tests can determine whether you’ve been previously infected. The CDC currently does not recommend using the antibody test to determine whether you are immune to COVID post-vaccination.

The Rapid Antibody test is entirely free through your insurance or the CARES Act. However, you should check with your insurance provider before your scheduled test to ensure your test is covered.

If your Antibody test is positive, then your body is producing COVID antibodies designed to fight the SARS-CoV-2 virus. This means that you have either been previously infected by coronavirus or have been fully vaccinated. The immune system only starts making these antibodies once it has been introduced to the virus and has learned to properly protect you from it. Antibodies typically appear two weeks after infection or vaccination, so antibody tests can’t be used to diagnose current COVID infections. Please note that a positive test result does not permanently prevent you from catching COVID-19 or the Delta variant in the future. You should still take precautions to keep you and those around you protected.

With the Rapid Antibody test, negative COVID test results mean that you have not been previously infected with SARS-CoV-2 or received the COVID-19 vaccine. In some cases, patients may have had COVID in the past, but their immune system did not or has not yet developed antibodies.

Nasal swab tests like the Rapid Antigen and PCR tests are diagnostic tests. They use samples from the lower nostrils to identify current SARS-CoV-2 infections. COVID antibody testing instead uses a blood sample to detect COVID antibodies. This test is used to detect a previous COVID infection. It can not identify current infections and is not used for diagnostic purposes. You can schedule a rapid COVID test in Orange County through our online scheduler.

Many people who’ve had COVID never realize it. It can be easy to tell if you have the virus due to well-known and severe symptoms like shortness of breath, difficulty breathing, fatigue, fever, chills, loss of taste or smell, runny nose, nausea, and body aches. However, the majority of those infected only have mild or no symptoms at all. An Antibody test can be a great tool to tell whether you have some level of protection against the virus, particularly reinfection. Antibody testing also helps researchers, scientists, and healthcare professionals better understand COVID-19 and its variants—particularly how widespread and dangerous they are.

COVID antibodies can take between 1-3 weeks after infection or vaccination for your body’s immune response to start producing them. In rare cases, some people may take even longer or never never develop antibodies at all.

Patients who may have been previously infected with SARS-CoV-2 might be recommended by a healthcare provider to get COVID antibody testing. Antibody tests require a prescription by your doctor. We do not recommend Rapid Antibody tests to verify antibody development after you are fully vaccinated.

Yes. While COVID antibodies give you an extra level of natural protection against the virus, they do not entirely prevent you from becoming reinfected, especially against newer variants like the Delta variant. Still, cases of reinfection are relatively rare in the first few months after infection. However, as antibody production gradually wanes in the following months, so does your immunity. Health experts recommend vaccination even if you’ve previously had COVID for greater and continued protection. Research shows that vaccination provides the greatest protection. For those who had been reinfected, full vaccination led to milder and less dangerous COVID-19 symptoms.