Your unique barcode is located in 3 different places: 1) On the outside of your kit. 2) On the sample collection tube in your kit. 3). On your “Contact Card” in the kit. Your barcode begins with “ADX” and is followed by 12 digits. For example: ADX-111-222-333-444. You’ll also be asked to provide your Sample Collection Date with a REMINDER you should print your initials and birthdate on the collection tube.