It is important to take your blood test as soon as you can as this is delivered to you. This is because the serum that is contained by the collection tube (also known as a vial) has an expiry date. You can find this expiry date at the bottom of the vial as shown in the example below.
In the event that you do not manage to take a sample before the expiry date, please do get in touch with us at hello@vitl.com.