How do I register my kit? April 01, 2020 00:11 Updated After you receive your kit, you can register it here. You will be prompted to enter the unique 12-digit barcode printed on the side of the collection tube. Related articles How does the Pixel by LabCorp™ process work? How long is my sample stable for testing? How long does it take to get COVID-19 test results back? Is it safe to send my sample in the mail? Can I order a test for someone else?