IgG Quantitative Antibody Test

Vaccine and immune response | Blood sample collection

  • 5 minutes
  • 109 British pounds
  • Claret Diagnostics, Park Royal, London.

Service Description

Check your immune system's response to vaccination or past infection. Whether you have been recently vaccinated or caught Covid-19 naturally, this test will confirm whether your immune system has developed IgG antibodies and give you a quantitative measure of your body's response (between levels of 0 - 80,000 AU/ml). The procedure is a very simple blood test taken at our clinic by a trained healthcare worker. About the test: It will help you to know how your immune system has responded to vaccination or an infection to confirm whether the illness you had was Covid-19 or something else. IgG levels often reduce quite quickly in the months after an infection and this test will enable you to monitor your IgG levels over time to see if your levels are dropping to below the levels that may be assumed to give immunity. If you receive a positive result, this is because the test detected an AU/ml level of above 50 units, which can be taken to confirm that you have been either been exposed to coronavirus or that your body has produced an immune response to your vaccination. This quantitative IgG test measures your levels of IgG antibodies against the spike receptor-binding domain (RBD) of SARS-CoV-2. The spike protein is the main protein that is associated with the body mounting an immune response. It is also the protein which all the immunisations are mimicking to get the body's immune system to fight off the virus so this test will tell you how well your body has responded to the vaccine. Once your sample has been processed, you will receive your results via email. Please note, it is not yet clear whether how your immune response relates to whether you are immune or not. Research into this is ongoing so do not presume you are immune - even with a positive result. When to take it: This test is best taken at least seven days after your initial coronavirus infection or vaccination. Your levels are likely are to continue to rise up to 15 days when it is 99.4% sensitive in confirming your exposure to the spike protein of the virus. Test Results: You will receive your test results within 24-48 hours of visiting our clinic, in most cases the next afternoon. Email certificates with a clear result will be sent via a secure link which is emailed to you as soon as they are available. Please note: This test does not identify if you currently have a Covid-19 infection. For that information you will need our PCR or Antigen test.

Contact Details

Park Royal, London, UK

Unit 6 Minerva Bus Centre, 58-60 Minerva Road, Park Royal, London, NW10 6HJ

  • Facebook
  • Twitter
  • Instagram
  • LinkedIn

Tested by PHE/CQC approved UKAS accredited, ISO 15189 2012 laboratory