We recommend testing all staff twice a week - it is possible that limited pooling of samples can reduce the cost.

"When considering the frequency of testing, please take advice from your testing provider, bearing in mind the following:

- how prevalent the virus has been amongst your employees
- whether the workplace setting provides a particular risk of transmission (for example low levels of ventilation, working in unavoidable close proximity or other factors which prevent full risk COVID-19 measures being instituted)
- the risk profile of those in the workplace; for example older people or people with underlying health conditions are at greater risk
- the sensitivity of the test that you are using."