Frequently Asked Questions

Check most frequently asked questions here, if you still need help then please contact us at

Entering the UK

Following a rule change on 19 July, these are the current rules:

Children under the age of 4

  • Exempt from any travel testing or quarantine

Children from 5 to 10

  • Exempt from the pre-departure test to come into the UK
  • Must perform a Day 2 test after arrival
  • Exempt from quarantine, regardless of arriving from Amber or Green list countries

Children from 11 to 18

  • Must take a pre-departure test before boarding a flight to the UK
  • Must perform a Day 2 test after arrival
  • Exempt from quarantine, regardless of arriving from Amber or Green list countries

The field for the reference number in the Passenger Locator Form is format-restricted. It means it must be entered in the format we have sent you in the confirmation email. Please note that the reference number begins with CONFI (with the letter i, not a 1).

We send the reference number needed for your Passenger Locator Form automatically as soon as you complete your purchase. It is sent in a separate email to the order confirmation email. It is sent by an automated system, which can therefore trigger some spam filters (especially for Hotmail or BTinternet accounts). Please make sure you have checked your spam folder. 

If you still cannot find your reference number, there is an easy way to retrieve it. Go to and click on "Lost booking reference". Enter the same information you entered when you placed the order. The system will then retrieve your record and display the reference number.

Each person/patient on an order will have their own reference number. If you're unsure which number is for which person, you may use the lookup feature mentioned above to retrieve the number for each person. 

Unfortunately not, different rules apply in Scotland as mandated by the Scottish Government.

The rules state:

If you’ve been in an amber list country in the 10 days before travelling to Scotland, you must:

  • complete a passenger locator form
  • take a COVID-19 test before travelling
  • book and pay £170 for day 2 and day 8 COVID-19 travel tests - you must book your testing kit using the CTM Booking Portal – any other type of testing kit, such as free NHS kits or those sold by private businesses, cannot be used for these tests

You can find the link to the Scotland Government's rules here. 

Yes, Confirm Testing is proud to be listed on the UK Government website to provide Testing for International Arrivals (Day 2 and Day 8) as well as Test to Release and general testing within the community.

You can find us on the following lists on the UK Government website:

  1. General testing providers
  2. Day 2 Day 8 testing providers: Click here for Amber list and here for Green list.
  3. Test to Release 

Yes. You can read the full Statutory Instrument here.

If you get a positive result from your day 2 test, you must quarantine for 10 days beginning the day after the test was taken (this means until day 13). Your household will also need to quarantine until day 13.

You will not need to do the Day 8 test if you have arrived from a country or territory on the amber list.

If you get a positive test result from your day 8 test you will need to quarantine until day 19. Your household or anyone you have been in close contact with will also need to quarantine until day 19.

You cannot leave Home Quarantine until you have served 10 (ten) full days and you have received evidence of a negative test result for your Day 8 test. 

The traffic light system allows the public to understand COVID requirements when travelling to England. It has been designed to align with the current government guidelines for international arrivals and depends on the current status of COVID-19 in that area.

You can read more about it on the Government website here

Before travelling into the UK from a country on the amber list you must book a day 2 and day 8 testing package so you can complete your Passenger Locator Form. On arrival in England you must quarantine at home or in the place you are staying for 10 days after arrival (day of arrival is day 0). Within this time you must take a COVID test on or before day 2 and on or after day 8.

You can purchase the Day 2 and Day 8 testing package here .

You can purchase the Day 2 and Day 8 plus the Test to Release (Day 5) bundle here .

Countries on the green list are safe to travel to and pose the lowest risk. International arrivals will not be required to quarantine on arrival in England.
You must book a day 2 testing package prior to arrival to successfully complete your Passenger Locator Form. You will be required to complete the day 2 COVID-19 test within 48 hours after arrival but will not be required to isolate unless you have a positive test result.

You can purchase the single Day 2 test here. 

If you are travelling from a country on the red list, you will need to be quarantined in a hotel designated by the Government. This will include COVID-19 testing and does not require you to book a separate testing package. It is not recommended to travel to any country or territory on the red list.

You can view the red list of countries on the Government website here. 

All the government’s current advice on Home Quarantine can be found here.

The first test (to be done on or before Day 2) is used by the government to detect different strains of the virus, but the result will make no difference to your self isolation.

The second test (to be done on or after Day 8) is to ensure you are free of the virus before you leave Home Quarantine.

Test to Release

Yes, Confirm Testing is proud to be recognised by the UK Government (the Department of Health and Social Care) to provide Test to Release as well as Testing for International Arrivals (Day 2 and Day8) and general testing within the community.

You can find us on the following lists on the UK Government website:

  1. General testing providers
  2. Day 2 Day 8 testing providers: Click here for Amber list and here for Green list.
  3. Test to Release


Yes, children of all ages are required to do Test to Release if they want to leave quarantine early. 

The Government guidance on this is found on this page and it says :

"You will have to pay the private test provider for your test. You will need to book an individual test for each person opting into Test to Release, including children of all ages."

Yes. You can read the full Statutory Instrument here.


Due to different mailing collection times on the weekend, we do not recommend that you take this test if your day 5 falls on a Saturday or Sunday. This can delay the arrival of your swab at the lab and you may not receive your results until day 8.

You can still choose to perform the home test if you arrange for a private courier to deliver the sample to the lab on that day.

Test to Release is a scheme that allows travellers to leave home quarantine early by performing a test on or after Day 5 of their self-isolation. If the test result is negative, they can leave home quarantine. Please note, you can only leave after you have received the result, and if you have purchased the home test, your result would come on Day 6 at the earliest.

Under the current rules, this is the only way that home quarantine can be brought to an end before the 10 day self-isolation period

The scheme is voluntary and applies to those quarantining in England only.

If you do not want to opt into the Test to Release scheme, you will need to self-isolate for 10 days.

You can purchase the Test to Release Day 5 test here.  

Fit to Fly

Most do but this is constantly changing. The guidelines and different types of tests required is constantly being re-evaluated by countries so we have chosen not to list them here as it is best to search for the updated information at the time you need it. We are always happy to answer questions if you choose to contact us.

Our in-person service at the Heathrow Marriott is open seven days per week. Our laboratory processes swab samples 24/7.

The biggest risk with Fit to Fly certificates is that someone misses a flight because they do the test incorrectly or there is a delay in getting the swab to the laboratory (usually caused by postal delays).

So, we ONLY offer Fit to Fly as an in-person service at our clinic at the Heathrow Marriott Hotel.

The swabbing is undertaken by a trained professional to minimise the risk of errors.

The swabs are sent by motorcycle courier to the laboratory to minimise the risk of delivery problems.

Some countries accept rapid antigen tests (also called Lateral Flow Tests) for Fit to Fly purposes. However, this list changes all the time so we have decided not to publish a list as we do not want to give information that is incorrect or out of date.

It is your responsibility to make sure you are buying the right test for whichever country you are visiting. We are always happy to answer questions should you choose to contact us.

Yes, you will be provided with an official lab report and a globally-recognised Fit To Fly certificate with your results. This certificate contains the type of test performed, the name of the laboratory that conducted the test, as well as the signature of the lead scientist.

We can only issue a certificate if you have been found to have a NEGATIVE test result. If your result is positive, you will have to follow NHS guidelines and self-isolate immediately. For the health of everyone around you, you must not attempt to travel.

You will receive a document of your positive result.

Fit to Fly is the general description for a test that allows you to demonstrate that you are free of COVID-19 and are fit to board a plane enter another country.

Most countries ask for a certificate that shows a negative PCR result that was performed within 72 hours of the flight leaving.

Most countries ask for 72 hours from the time the swab is taken to the flight departure time or arrival in the country. Some ask for 48 hours.

We advise people to come to the clinic TWO DAYS before they are due to fly. This gives us time to do the test and get the results back from the laboratory; but to still be within the 72 hour requirement for most countries.

For example, if you are due to fly on a Saturday, come to the clinic to get tested on Thursday. You’ll get your results on Friday - in plenty of time for the flight the next day

Barcodes & Results

Don’t worry, if you have forgotten to register your barcode before posting, simply register it online at Ensure you type in the correct details including your home test barcode (you can find this number on the instructions booklet that came in with the test or in the box the test came in) so the lab will be able to link your home test kit with your profile.

If you are having trouble registering your barcode you can always give our friendly Customer Service Team a call on 020 3870 3623 and we can register it for you.

Please note that it can take up to 48 hours after your home test arrives at the lab for the results to be released. You can check the status of your returned home test with the tracking number in the returns label you used to post it and using the Royal Mail tracking service via the link below.


Before posting your home test, you also need to register your home test on our portal so the lab can link it to the record we have on file for you. To register your home test, please visit Ensure you type in the correct details including your home test barcode (you can find this number in the leaflet that came in with the test or in the box the test came in) so the lab will be able to link your home test kit with your profile.

Lateral Flow Tests - Fit to Fly

Yes, you can use the Lateral Flow Fit to Fly tests to leave the UK to a destination that accepts rapid antigen/lateral flow tests as proof of COVID-19 negative status for entry.

It is up to you to verify the requirements needed for entry into your destination. You can find advice here

Yes, you can take this test kit with you to your holiday destination to take while there before your flight back to the UK. 

The tests are MHRA approved for self-testing and are CE marked.

No, we do not offer QR codes on our Lateral Flow Test Fit to Fly certificates.

We verify results photos throughout the day, seven days a week, and generally send out result certificates within hours of photos being uploaded.

However, please be aware that it can occasionally take longer to send out certificates (up 12 hours), particularly if photos are uploaded at night.

If you haven't received your certificate within 12 hours please check your "spam"/"junk" mailbox before contacting us.

When you send your photo, you will receive an auto-response confirming receipt of the email. If you have not received this, then we have not received your email, please resend it.

Instructions are found here.  

Heathrow Clinic

We offer a Clinic that is fully accessible to wheelchair users. It is all on one level and has wide doors to access. 

If you need to bring a chaperone to assist you during your appointment this can be accommodated, please just let us know upon arrival. 


Yes, you can drop off your home test at the clinic if you would like to avoid sending it by Royal Mail. We accept drop offs till 4:00PM daily. 

Our clinic is open daily from 08:00AM to 5:00PM, including on Bank holidays. 

Our clinic is located at the London Marriott hotel on Bath Road.

The address is:

London Heathrow Marriott Hotel, Bath Road Heathrow, Airport, Hayes UB3 5AN

PCR Testing

Please do not eat, drink or chew gum for at least 30 minutes prior to your PCR or rapid antigen test.

Please do not smoke for at least 30 minutes prior to your PCR or rapid antigen test.

Please do not apply any nasal drops for at least 30 minutes prior to your PCR or rapid antigen test.

PCR testing is recognised as the "gold standard" of laboratory testing with accuracy rates very close to 100% if the sampling is performed properly. Anyone not doing the test properly should receive an "invalid" response, rather than negative, which would give false information.

Yes, the test is suitable for people of any age. We use the most non-invasive kit available, but some children may still find the process uncomfortable. If the test is being undertaken at home, to avoid receiving an INVALID result, we recommend that parents perform the test on young children, wherever possible.

This is a notifiable disease so all results will be shared with Public Health England. In the event of a positive result, we will provide advice and support on what to do next.

According to NHS advice, if you are getting a test because you have symptoms, you and anyone you live with MUST stay at home until you get your result. Anyone in your support bubble must also self-isolate until you get your result.

We apply enhanced levels of data protection to the collection, storage and processing of all medical data related to COVID-19. This is in accordance with the requirements of the Information Commissioner's Office.

PCR (polymerase chain reaction) testing looks for evidence that the Sars-CoV-2 virus is currently in your body, by detecting the presence of its genetic material (called “RNA”) in a swab sample from your nose/throat.

When the sample is analysed in a laboratory, a reagent is added to it which – if the virus is present – starts a “chain reaction” and creates copies of the genetic material contained within the virus so that it can be detected and analysed.

The analysis takes place on complex laboratory equipment and can take many hours to return a result. The swab can be taken at home, the testing cannot.

Anyone can do a test for Covid-19, especially if they have recently travelled, or have been in contact with someone that has tested positive.

Asymptomatic carriers of the virus have an active infection but do not display any symptoms, so testing can help determine your status regardless of whether you are displaying symptoms or not.

Some people are required by law to be tested - for example, in relation to international travel - so we always recommend that people keep themselves fully up to date with the requirements.

Antibody Testing

Yes, absolutely.

We only use fully-qualified and registered healthcare professionals. We hold all PIN numbers for all of our NMC and HCP practitioners.

Yes. It is believed that a small number of people may have had COVD-19 but their bodies have not produced any antibodies. In this case, the patient must consider themselves at risk of contracting the virus again. Also, in this specific case, it is currently unknown if a vaccine, when available, would provide this patient with immunity.

Yes – but we understand if you're squeamish about it.

Our healthcare professionals are experts at doing this procedure and use the best lancets available to make this bit as easy and painless as possible. The team at Confirm Testing have used these lancets dozens of times in testing and can confirm that they're as painless as this process can be!

The antibody test we use is a rapid lateral flow test which is 99% accurate.

For many months it was unclear whether having COVID-19 antibodies conferred immunity. However, a large-scale study by Public Health England has shown that people with antibodies have an immunity to COV-19 for at least five months. Similar studies in Germany and South Korea put the number at eight months.

When our bodies are under attack from a virus, our immune systems make antibodies (also known as immunoglobulins) to protect us by attaching to the virus to activate the rest of the immune system to attack and clear the virus.

The first antibody to be produced is Immunoglobulin M (IgM) which is found mainly in our blood and lymph fluid. The presence of IgM is the earliest indicator that the body is fighting an infection.

The most common antibody is Immunoglobulin G (IgG). This is found in blood and other fluids, and protects against bacterial and viral infections. IgG can take time to form after an infection or immunization and provides long-term immunity and immunological memory.

Detection of COVID-19 IgM antibodies would indicate a recent exposure to COVID-19, whereas detection of COVID-19 IgG antibodies would indicate a later stage of infection.

The Confirm Testing service tests for the presence of both IgM and IgG and your qualified medical professional will guide you through the results – including an indication of the stage of infection.

The testing cassette can only give a result when droplets of blood are combined with the test liquid (also known as the “buffer”). It dilutes the blood to help the antibodies flow along the test cassette - almost like a piece of blotting paper. If the cassette detects the presence of Covid-19 IgM and/or IgG antibodies it will change colour in specific places.

The test result may show that someone has the presence of IgM antibodies, which implies the virus is relatively new in the system (IgM is the first antibody our body produces to fight a virus). IgM antibodies will not specify if the person is still carrying the virus. In this case, we would recommend that the person has a PCR test to confirm their current status.

If positive, that person should follow government advice.

An antibody test determines whether someone has previously been infected with the virus and has subsequently produced the antibodies to fight it. This means that for the test to be accurate, it is best to test 14 days after the first onset of symptoms.

There are four results possible and our qualified healthcare professional will guide you through whatever result is diagnosed and its implications.

  1. Negative: This means that your body has not produced the antibodies associated with Covid-19 and there are two possible reasons: 1) You have not contracted the virus, or 2) the virus is in the very early stages in your body. We recommend that you monitor your health in the coming days to see if you develop any of the symptoms associated with Covid-19 see the advice from Public Health England.
  2. IgM positive: These are the first antibodies our bodies produce. IgM is usually released some days after the onset of the virus and can persist for several months before disappearing. IgM does not confer long-term immunity and is simply a primary immunological marker of COVID-19.
  3. IgM and IgG positive: This means that your body has produced the antibodies associated with COVID-19 and you have recently contracted the virus.
  4. IgG positive: this means that your body has produced the antibodies associated with COVID-19 - even if you didn't experience any symptoms - and you have contracted the virus at some point in the recent weeks or months.

General Questions

All the latest government advice can be found here.

Advice changes on a regular basis so we recommend you constantly check official sources and follow all government advice.

As we have seen from other parts of the world, testing is crucial to limiting the spread and effect of COVID-19. Those countries that are currently recognised to have most successfully dealt with the virus are those that tested early in large numbers and used those results to perform rigorous contact tracing.

Our service enables companies and businesses to fully prepare their workforce for the return to work and to give consumers vital information about their COVID-19 status

Returns & Refunds

Before claiming or discussing a refund, please read our full policy here.


About Confirm Testing

Confirm Testing Limited is registered in England with number 12570252.

The registered address is:

Clifton House

Bunnian Place



RG21 7JE

Our operational address is 1 Harley Street, London W1G 9QD

Written correspondence should be sent to the above address.

Email correspondence can be sent to

All medical products used by Confirm Testing are registered with the MHRA and are CE approved.

The laboratories we use are fully accredited.

For antibody testing, our procedures are carried out by nurses registered with the Nursing and Midwifery Council (NMC). Many are among the most senior nurses who continue to work part-time for the NHS. We hold copies of all relevant documentation for all our healthcare professionals and for the laboratories that we use.

Confirm Testing is proud to be recognised by the UK government (Department of Health and Social Care) for all three types of COVID-19 testing - general testing, Testing to Release, and Testing for International Arrivals.

Acceptance on these lists implies adherence to the highest standards of clinical care and a commitment to operating to internationally-recognised standards.

We are also proud to be listed by the UK Government on the following lists:

  1. General testing providers
  2. Day 2 Day 8 testing providers: Click here for Amber list and here for Green list.
  3. Test to Release


You can find our privacy policy here.