Covid-19 Antibody

Our home to lab antibody test looks for the presence of IgG and IgA antibodies to SARS-CoV-2, the virus that causes COVID-19, and can determine if you have previously had exposure to coronavirus.

The test works by taking a blood sample and testing for the presence of antibodies to see if you have developed an immune response to the virus. Antibody tests differ to virus swab tests, which test to see if you currently have the virus. An antibody test cannot test if you currently have the virus.

IgA 87.5 – 100%
IgG 83.5 – 97.5%

IgA & IgG antibodies test is 89 – 100%

Collection method:

Finger-prick sample

Number of biomarkers tested: 1


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More about this test

Find out if your body has developed antibodies from a previous infection with our COVID-19 IgA/IgG antibody test using the ELISA method. Even if you have experienced no symptoms, you may have been infected with the virus that causes Covid-19 and produced antibodies to the virus. An antibody test cannot test if you currently have the virus.

• Test for IgA/IgG antibodies to the SARS-CoV-2 virus
• Sample processed by an ISO 17025 accredited lab
• Laboratory and shipping costs included
• Results emailed to you within 48 hours of lab receiving your sample

Test results are available online within 48 hours from when your sample is received by the lab. Please allow a total of 4-5 working days from placing your order to receiving your results. It is an estimate only and your results may take longer during busy periods.​

Test Methodology – finger prick blood sample.
Please note this is not a finger-prick rapid test.

The NHS have posted a useful video on how to collect a blood sample here.

Are you unsure which coronavirus test to take? The Health Hub has a large selection of coronavirus tests, including:

  1. Travel Test Bundle
  2. Pre Departure Test
  3. Coronavirus Day 2 & 8 PCR Test
  4. Twin Pack: Coronavirus Day 2 & 8 PCR Test
  5. PCR Test To Release
  6. Day 2 Click Swab Test
  7. Day 2 PCR Test
  8. Amber List Travel Pack
  9. Day 2 Lateral Flow Test with Photo Verification
  10. Day 2 Fully Vaccinated Covid Test
  11. Rapid Antigen Pre-Departure Covid Test
  12. Day 8 Covid Test
  13. Daily Lateral Flow Test for Work, Events, Parties

Delivery Options

– Kits dispatched same day with DPD if ordered before 3pm Monday-Friday (excluding Bank Holidays)
– Orders placed after 3pm Friday will be dispatched on the following Monday for delivery on Tuesday

Royal Mail tracked 24 return shipping is provided free of charge. You will be emailed your tracking number.

Our Covid-19 antibody tests can be returned via a Royal Mail priority postbox.

Sample Return Options

You can choose any of the following:

  1. Free Royal Mail Tracked 24
  2. Arrange your own courier
  3. Drop off to lab

1. Royal Mail Tracked 24
A free Royal Mail Tracked 24 returns label is included with every covid-19 kit to return your sample to our laboratory. You must return your sample using a Royal Mail priority post box. The tracked 24 service is intended for next day delivery but this is not guaranteed by Royal Mail. This can take 2-3 working days*. Please take note of your tracking number to check on the delivery status of your returned sample.

Please note, we cannot be held responsible for delays out of our control or lost samples.

Please note that your test can only be returned using Royal Mail priority postboxes. Do NOT take to a Post Office as they won’t accept and it may delay your sample.

Find your nearest Priority postboxes at:

2. Arrange your own courier
If you would prefer not to return your sample using the provided free Royal Mail Tracked 24 returns label, you can arrange your own courier to deliver your sample. The address for our lab is C/O Health Hub, Unit 6 Osyth Close, Brackmills Industrial Estate, Northampton NN4 7DY.

3. Drop off to our laboratory
If it is safe and you are able to do so, you can drop your sample off to the laboratory.

Our opening times for sample drop off are:

Mon – Fri: 9am – 6pm
At the entrance of the building is a yellow bin labelled ‘Covid tests’. Please place your sample in the bin and our regular sample collection will pick this up. You do not need to meet anyone to do this.

Weekends: 9am – 6pm
During the weekend please press the bell next to the shutter to advise the team you you are dropping a Covid sample off before placing this in the yellow bin labelled ‘Covid tests’ at the entrance of the building.

The laboratory address is:
C/O Health Hub, Unit 6 Osyth Close, Brackmills Industrial Estate, Northampton NN4 7DY.

Please remember, if you are showing any Covid-19 symptoms to protect others, do not go to a GP, pharmacy or hospital. Visit for further information.

This test helps to establish whether someone has had COVID-19 by detecting the specific antibodies to the virus. Our antibody test measures IgG and IgA antibodies against SARS-CoV-2, the virus that causes COVID-19. The test is conducted from serum (SST tube, no centrifuging necessary) at the laboratory and a laboratory report is provided. Seroconversion takes place with almost 100% certainty after around three weeks.

This is a finger prick blood test using CE-marked components.

A Royal Mail Tracked 24 return label is provided with every kit for you to return to our centre. Covid-19 antibody tests can be returned via a Royal Mail priority postbox.

Our antibody tests are performed by one of the UK’s leading laboratories who are accredited to ISO 17025.

We appreciate that a large number of people will want to take our test. We are dealing with each and every order as a priority. Please be rest assured that Health Hub are committed to testing at scale and want to help as many people get back to normal life as soon as possible.

IgA 87.5 – 100%
IgG 83.5 – 97.5%

The antigen (S1 domain) used in the test is particularly appropriate for the serological detection of SARS-CoV-2 antibodies as it is more specific than the N or full-length S protein please see the scientific paper “SARS-CoV-2 antibody responses in COVID-19 patients”, for further details, and the other references provided.

IgA & IgG antibodies test is 89 – 100%

Your test results will be described as either negative, borderline or positive. A positive or borderline result does not mean that you won’t catch the virus again or carry and transmit the virus onto someone else, nor does not mean that you are immune to having another COVID-19 infection in the future.

No. In order to get the results from this test you collect a finger prick blood sample at home in a small vial. You post this sample to our ISO 17025 accredited laboratory for analysis. Once the laboratory receives your blood sample, your result should be available within 24 hours.

This test is appropriate for anyone over the age of 18 who wants to understand whether they have had COVID-19; this means individuals who experienced mild or moderate symptoms, or those who were exposed to COVID-19 but did not experience symptoms at all.

It is important to wait 14 days from the onset of symptoms before taking this test. This is to ensure that antibody levels are detectable. If you did not experience any symptoms but were exposed to the virus this test should be taken 21 days after the last exposure.

It should be noted that the test may not accurately detect antibodies in those with a compromised immune system as their production of antibodies is weakened or slower. This may affect individuals with immunodeficiency disease such as HIV or those taking medications that suppress the immune system.

No, this test detects antibodies; these are produced some time after an individual becomes infected. In the majority of people antibodies reach detectable levels 14 days after the development of symptoms or, if you haven’t had symptoms, 21 days from possible exposure to the virus.

For most accurate results we recommend taking your blood sample 21 days post onset of symptoms.

Do not go to a GP surgery, pharmacy or hospital. Use the 111 online coronavirus service to find out what to do.

Only call 111 if you cannot get help online.


How long does it take to get my results once I send my sample back?

Once you have sent back your sample to our lab it will arrive there within 1 -2 days (excluding Sundays). Once it has arrived at our lab, they will then check in your sample. You will get an email confirmation of this and will receive results within 48hrs via email but typically 24hrs. Day 5 test results are ready in 24 hours from it being received in the lab.

How do I send my test back?

Each test includes a UN3373 return bag and a Royal Mail Tracked 24 return label. All you need to do is follow the instructions to seal your sample inside the bag and send it back to our laboratory.

Why are your tests so expensive?

Our tests are currently in line with most at home testing kit providers, but kits do vary in price depending on the source of kits and other factors.

Why do they need to be PCR and not lateral flow?

Lateral flow tests will not be able to be analysed for variants if positive, that is why they are not satisfactory.

Why do I have to pay for tests?

As travel back into the UK is a private matter, you must pay for your testing, individuals who need to travel due to the nature of their job are exempt from paid for testing in line with government guidance.

What is my booking ref?

The reference numbers are on your order confirmation email you will have received after purchasing and start with “HEALT”

Can I leave the house to return my swab sample?

You may leave your house to post your test or to travel directly to and from a testing site. You should follow safer travel guidance and avoid public transport if possible.

How do I find a priority post box?

Priority post boxes are listed on the Royal Mail website.

When will my test arrive?

We dispatch the test kit one day before your arrival in The UK. So you will receive it on the day of the arrival or the day after.

Where is your lab located?

Our PCR testing lab is at 6 Osyth Close, Brackmills Industrial Estate, Northampton, NN4 7DY. If you drop-off by 10am, you should have your results back by the end of the day but certainly within 24 hours.

Does my child need to be tested?

Children under 5 do not need to take the day-2 or day-8 test, however if you are opting for the test to release scheme they will need to take a day 5 test. You can find more information on the following link. When you complete your order you will receive an order confirmation email which will include your booking reference number for use on the passenger locator form, this will begin with HEALT.

How do I return my sample?

You have several options to return with us.

  • Free Royal Mail Tracked 24 (1-2 working days to return if sent Monday – Friday or Saturday
  • Arrange your own courier
  • Drop off to lab

How do I get my results?

Results will be available through your online dashboard but you will receive an email and text to notify you when they are ready.

How do I take my test?

Your kit will include instructions of the full process or you can watch our useful video explaining the process here.