COVID-19 Antibody Test
Why take a COVID-19 Antibody Test?
The 2020 COVID-19 pandemic is caused by a virus known by the scientific community as SARS-CoV-2. This virus is also called the "Novel" Coronavirus because prior to late 2019, this specific strain of Coronavirus had never been seen in the human population. Humans have not developed widespread immunity to this virus. However, thousands of people have been infected with this virus and recovered. They will typically have antibodies to this virus present in their blood, long after symptoms are gone. If you have antibodies to SARS-CoV-2 in your blood, regardless of whether or not you had symptoms, it suggests you may be immune to getting the disease again.
What's the difference between IgM and IgG antibodies?
The difference between IgM and IgG is timing of infection. IgG denotes longer term immunity, whereas IgM typically means infection has occurred from 2 to 6 weeks ago.
When are IgM and IgG antibodies detectable in the blood?
IgM antibodies are detectable approximately 12 days after exposure (or 5 days after symptoms onset)
IgG antibodies are detectable approximately 3 weeks after exposure (or 2 weeks after symptoms onset)
How do you interpret results from the test?
IgM IgG Interpretation
- - Person has not been infected with the SARS-CoV-2 virus or Person has not yet produced antibodies
+ - Suggests patient is in very early stages of infection
+ + Suggests patient is in active phase of infection.
- + Suggests a past or current infection
What does this all mean for me?
Individuals who test positive for IgG are candidates for plasma donation to those afflicted with COVID-19. Coronavirus is early in its evolution to predict immunity and re-infectivity with 100% certainty. Based on experience with other viruses, antibody development in the setting of past infection and no current symptoms, means you’re able to resume work and other daily activities in society.
Keep in mind, if you suspect you have symptoms of COVID-19 but are not too ill, we ask that you follow the recommended protocol to stay home and take supportive measures until you get better. Please contact us immediately for guidance on your condition. If you become increasingly ill, have difficulty breathing or have severe weakness, you must go to the nearest emergency room. Do not wait to be tested in our office.
We look forward to discussing your options for COVID-19 testing and decide together which test best fits your current status. Together we will get through this pandemic.