Only post Monday to Thursday as this allows for immediate testing, posting at the weekend results in poor or unstable blood testing

Step 1: Securely apply your Royal Mail tracked 24 return label to the outside of the SafeTpack ready for postage. Please make sure not to cover the UN3373 marking.

Step 2: To find a mailbox with same day collection time, visit www.royalmail.com/services-near-you

Step 3: Post the sample the same day as it is taken.

Step 4: Wait for your result email to come to be able to check your markers.

Easy, step-by-step instructions that you’ll also find in your Tasso box. It’s painless and takes only a moment to complete.