No, you don’t need to post your sample back after your appointment. The medical practitioner who collects your sample will return it for you.
To assist the practitioner at your appointment, you’ll need to label your blood collection tubes using the labels that come with your kit. You’ll need to complete the test request form too.
Then, give your labelled blood sample, completed test request form and return envelope to the practitioner.
The practitioner will place your sample and test request form in the envelope and return it for you.