See your body’s response to Covid
Covid Antibody
After a Covid-19 infection or vaccination, the immune system produces antibodies against the virus. This test looks for IgG antibodies to the SARS-CoV-2 spike protein, the marker most commonly used to show that a response has taken place. It can help you understand whether your body has encountered the virus or responded to a vaccine.
Your sample is a straightforward venous draw, taken in our private Leigh-on-Sea clinic and analysed by an accredited UK laboratory. A doctor-reviewed report then sets out whether spike-protein antibodies were detected and what that does, and does not, tell you.
It is worth being clear about what this test is for. A positive result confirms an antibody response, but antibody levels are not a guaranteed measure of immunity or protection, and they naturally change over time. Treat it as context about your history rather than a green light, and discuss anything that concerns you with your GP.
Preparation: No fasting or special preparation is needed. If you have been recently vaccinated or infected, bear in mind that antibody levels take a short while to develop and then change over time, which is useful context for your report.
Inside this panel
1 biomarker
- SARS-CoV-2 antibodies1 marker
- SARS-CoV-2 Spike IgG antibodies
Worth considering if
- Curiosity about a past suspected infection
- Wanting to confirm a response to vaccination
- Reassurance after a household exposure
- Uncertainty about previous symptoms
Who this test suits
- Anyone curious whether they’ve had Covid-19 before
- People wanting to confirm a response to vaccination
- Those reviewing their immune history out of interest
- 1
Book your time
Choose a slot that suits you. Appointments only, so the clinic is yours.
- 2
A gentle draw
Demi takes your venous sample in minutes, in a calm private room.
- 3
Doctor-reviewed report
Your results arrive within 5–7 working days, explained marker by marker.
About this test
It means antibodies to the SARS-CoV-2 spike protein were detected, showing your body has responded to past infection or vaccination. It does not, on its own, confirm you are immune or protected.
No. Antibody presence is informative but not a guaranteed measure of immunity, and levels naturally decline over time. It reflects your past exposure, not how protected you are today.
Most reports are returned within 5–7 working days of your sample reaching the laboratory, reviewed and explained by a doctor.
