The test kit comes with an envelope which already has a shipping label. You can simply throw this into a postbox. In summer, we recommend that you hand in your blood sample directly at the post office so that it is not exposed to the heat in the mailbox. As a result, the blood can clot and will no longer be able to be evaluated. If your blood is clotted when it arrives at the lab, we will automatically send you a new test kit. In this case, you will be informed in advance by email.