Public Health England said 3.5 million testing kits had been purchased by the UK government and were being verified before release in the “near future”.
The Prime Minister’s official spokesman confirmed that the tests would be available via Amazon and at chemists like Boots.
They would allow key workers who have developed coronavirus antibodies - meaning they cannot contract the illness again - to stay on the front line.
Professor Sharon Peacock, director of the National Infection Service at Public Health England told MPs on the Commons Science and Technology Committee: “Once we are assured that they do work, they will be rolled out into the community.
“Testing the test is a small matter, and I anticipate that it will be done by the end of this week.
“In the near future people will be able to order a test that they can test themselves, or go to Boots, or somewhere similar to have their finger prick test done.”
Prof Peacock added that the testing kits would “absolutely” be available in “days, not weeks”.