COVID-19 testing for large businesses

Remove uncertainty and achieve COVID-19 secure at scale.

The challenge of creating a COVID-19 secure environment for a large business is immense. Testing is a vital part of the solution both to keep the spread of the virus under control but also to improve employee sentiment.

Remove uncertainty with TFA

We need to get the economy moving again and the only way we can do that is if businesses like yours reopen. However, being COVID secure is not easy and you need to be able to reassure your team they are safe.

Testing is a vital part of tackling this challenge. This is where we come in.
We are a Not For Profit organisation offering COVID-19 testing at cost price.

Our tests are on offer to businesses in the UK and are carried out by the same labs as commercial providers but at a fraction of the price.

COVID-19 Lateral Flow Antibody Test

Provide reassurance and reduce risk with antibody testing.

A common response to the exposure to SARS-CoV-2 (the virus that causes COVID-19) is for our bodies to develop antibodies. These can generally be found in our blood 14 days after symptoms appear, and subsequently remain for a long period of time.

Knowing whether or not your team has already been exposed to COVID-19 can help you understand how effective your social distancing measures have been to date and help refine your plans.

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Identify existing COVID exposure and manage outbreaks with our RT PCR testing.

Businesses need to manage their own outbreaks through testing.

If you are worried about a recent COVID-19 outbreak or want to implement routine testing, our PCR Viral RNA test allows you to test your workforce at scale and detect any signs of infection starting five days from potential exposure.

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antigen test

Frequently Asked Questions

A ‘COVID-secure’ workplace is one where employers have taken precautions and introduced new measures (such as ensuring social distancing or providing masks and hand sanitizer) in order to minimize the risk of transmission of COVID-19 to as near to zero as possible. Testing employees may well form part of a comprehensive COVID-secure strategy. You can find the government’s guidelines here.

There are currently no requirements to offer testing to your employees, however doing so can help make your employees and customers feel safer and measure how effective your social distancing measures are in preventing the transmission of the disease. Workplaces have been shown to be clusters for transmission, so regularly testing your employees for active infections is important to help keep transmission rates down.

We recommend conducting a survey of your workforce using antibody testing, enabling you to measure immunity levels by seeing how many of your employees have already contracted the disease and understand the effectiveness of your social distancing measures. We also recommend conducting regular antigen testing to monitor current infections within your workforce and prevent employees who may be asymptomatic (~40% of cases) from spreading the disease further.

The test is a lateral flow immunoassay test and operates in a similar way to a pregnancy test. Embedded into the test strip are antibodies that bind to a COVID-19 specific biomarker, Immunoglobulin G (IgG), and another infection biomarker, Immunoglobulin M (IgM). When a sample (blood, serum or plasma) is added to one end of the test, it flows along the test strip and interacts with these antibodies. If the patient has contracted COVID-19, the biomarkers in their blood will bind to the antibodies on the test strip, leaving a visible test line. If the patient doesn’t have COVID-19, no biomarkers should be present in their blood and no test line will be visible. There are separate test lines for IgG and IgM and only one needs to be visible for a positive result.

Immunoglobulins are antibodies themselves and are part of our immune system. When we get an infection, such as COVID-19, immunoglobulins are produced, which attach to the virus and activate the rest of the immune system to attack and clear the virus. IgM is the first immunoglobulin to be produced. The presence of IgM is an indicator of early infection ( as early as 4 days after infection). The presence of IgG is an indicator of later stage infection (usually 7 days or longer after infection).

Yes, we recommend that anyone testing positive for IgM antibodies self isolate, as WHO guidance reports individuals can be infectious up to 7 days after first developing symptoms.

The PCR Viral RNA tests are 100% specific and 100% sensitive. They have been CE-IVD marked.

Accuracy based on viral loads of 750 copies/ml (LOD testing), based on studies using laboratory-based ISO approved RNA control spike-in material. Whilst research is ongoing, median viral load in saliva of confirmed cases has been measured at 5.2 log (~160,000 copies/ml [2]).

You can book as many tests as you want / need.

Your employees should continue working as long as they are able to observe adequate social distancing measures

At this time Antibody tests using our COVID-19 Home Total Antibody Test is recommended to be performed at home.

Our saliva based qRT-PCR test may be used in either the office or home environment, though we recommend that anyone who feels like they need this test should not travel to the office and remain at home until their result is processed.

Our network of partners is set up to deliver quality testing at pace. We have partnered with a number of accredited private laboratories, including Alpha Laboratories and our tests will be manufactured by Surescreen, a leading diagnostics company. Our logistical partner is Royal Mail and our legal partner is top international law firm, Cooley. For more information on our partners, please visit our partners page.

PHE assessed the chance of false positives for antibody tests to be 6.1%. False negatives from antibody tests may occur if the test is taken too soon after a possible COVID-19 infection, and we recommend waiting for 14-21 days after initial infection to ensure your body has had sufficient time to develop antibodies. Testing For All declines all responsibility for false negative tests.

Yes, we can schedule follow up consultations with GPs to help you interpret the results. The price of this consultation is however not included in the test fee.

The test has the potential to detect IgM/IgG antibodies in asymptomatic people, as they will have an immune response even though they don’t display symptoms. However, we recommend using RT PCR when looking for live asymptomatic infections.


To date we have tested numerous common pharmaceuticals, none of which have interfered with the test, hence we currently see no cross-reactivity issues. We are looking at more drugs and will update customers accordingly.

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