COVID-19 Antibody Rapid version: £55.00

Our COVID-19 antibody tests can help identify if you have previously been exposed to COVID-19.

Please be aware: We are presently not undertaking venous anti body testing for anyone specifically travelling to China.

The COVID-19 Antibody test detects the presence of the SARSCoV-2 specific IgG and general IgM for the qualitative diagnosis of early and late stage COVID-19. As mentioned, IgG is specific to SARS-CoV-2 and confirms secondary illness (usually >7 days), whereas IgM confirms primary illness (3-7 days). Both are elevated in the secondary illness and can be used to confirm diagnosis.

What is IgM?

Immunoglobulin M (IgM) is the largest immunoglobulin in humans and is the first antibody to be produced upon infection. Since it has multiple antigen binding sites, it can be thought of as a ‘general’ antibody and is compatible with many pathogen species/types. In the case of COVID-19, IgM levels in the blood rise to a detectable level 3-7 days after infection, as symptoms begin to appear.

A positive result for specific-IgM antibodies is indicative of early phase primary COVID-19 infection. Results from antibody testing should not be used as the sole basis to diagnose or exclude SARS-CoV-2 infection or to inform infection status, a follow-up testing with a molecular diagnostic (PCR) test should be considered to rule out infection in these individuals especially if exhibiting any symptoms.

What is IgG?

Immunoglobulin G (IgG) is a smaller structure and is produced in response to a specific antigen on the pathogen. Its levels rise later than IgM (>7 days) and indicates exposure to the SARS-CoV-2 sometime previously.

A positive result indicates previous exposure to SARS-COV-2, this antibody test is not a diagnostic tool for active infection. This test should be interpreted by a health care professional in the context of patient history and symptoms.