Test To Release (Day 5) COVID-19 test

  • An extra test to cut your isolation by up to 3 days*
  • UK government Test To Release scheme approved
  • Gold standard test, up to 99% accurate**
  • Quick results online
  • Fast and reliable sample returns via our Rapid Network drop-off service, or by Royal Mail

With this option:

  • Order before your return to England
  • Your test kit will arrive on day 5 of your isolation period
  • You'll get your results 24-36hrs after your sample arrives at our lab

*Subject to sample return dates and delivery times

For corporations and schools to bulk buy

For retailers and travel agencies start here

For API partners and developers start here

Industry-trusted testing from Chronomics

How it works

Step 1: Buy

Buy your test online in advance. We just need your flight details and your UK isolation address, then we’ll send you a booking reference to use on your Passenger Locator Form.

Step 2: Arrival

Fly to England, self-isolate and take a UK Government required test on Day 2. We’ll then send your Test To Release kit directly to your isolation address so it’s there for you on Day 5 (or the first working day afterwards).

Step 3: Take the test

Follow the simple instructions and register your test online. No medical staff, no hassle. Easy!

Step 4: Return

Put your sample in the prepaid return parcel provided and drop it into a priority postbox that day for next-day delivery via Royal Mail Tracked 24. You’re allowed to leave self-isolation to do this.

Step 5: You’re free!

You’ll get an email to view your result online, within 24-36 hours of your sample arriving at our lab. If your test’s negative – good news! You’re free to end your self-isolation period early, usually on Day 7 or Day 8.

Please note

Remember you still need to take another test on Day 8, even if your Test To Release result is negative.

Buy Now £99, priority postage included

Do you need more COVID-19 tests for travelling?


Why use Chronomics for Test To Release?

Our COVID-19 testing kit is one of the world’s first saliva tests for coronavirus, and allows you to end any mandated isolation period early when arriving in England from abroad if you test negative. It’s fast, easily performed at home and is as highly accurate as an uncomfortable swab test. It’s also simple to register online, meaning your results will be with you quicker so you can get on with life.

The test uses cutting-edge, entirely safe technology that has been scientifically validated in the UK, the EU, the US and by the World Health Organisation (WHO).

As an epigenetics company, we’ve got lots of experience analysing people’s biological samples to give them actionable information about their health. Now, we’re using that expertise to help in the fight against COVID-19.

Testing for COVID-19 without the hassle


Do it yourself, no medical professional involved

Kidney function

* Urea * Creatinine


RT-PCR tests that are 99% accurate*


An easy-to-use digital dashboard to register and get your results


CE marked for health, safety and environmental protection standards


Your data is fully encrypted and we are certified GDPR compliant

Buy Now £64.99 priority postage included


I’ve already done a Covid-19 test – can I just use that for Test To Release?
Can I use Test To Release if I’m travelling to all parts of the UK, including Scotland, Wales and Northern Ireland?
When will my Test To Release results be ready, and how long does it take?
I didn’t book my test before departure. Can I still participate in Test To Release?
Is your test authorised by the UK Government?
How does Test To Release work?
I’ve ordered a Test To Release kit but my travel plans have changed. What should I do?
Why can't you send me a testing kit on Day 4 of my self-isolation?
My testing kit hasn’t turned up and I’m on Day 5 of my self-isolation period. What do I do?

See all FAQ's