Express Home DNA Sibling Kits include everything needed to complete a traditional advanced mouth swab for both siblings. You can decide whether you want to test for full sibling relationship or half sibling relationship. Choice DNA Paternity Siblingship tests are analyzed twice with results within 2 - 5 working days from receiving your samples. Safe sibling test kit. To get results: 1. Take a cheek swab sample from both siblings. 2. Send the swabs back to the lab for testing with the FREE return shipping label we provide. If you have any questions, please don't hesitate to contact us (800) 219-4362. Shipping & results are completely DISCRETE and confidential. Sibling DNA testing (sibling DNA) is compatible with all ages and all races, ancestry, and ethnic groups: White, Black, Hispanic, Asian etcetera. Home testing kits are not available to New York State residents.