Free return shipping to the laboratory. Express Home DNA Sibling Kits include everything needed to complete a traditional advanced mouth swab on both siblings. You can decide whether you want to test for a full or half-sibling relationship. We guarantee accuracy. Choice DNA Paternity Siblingship tests are analyzed twice with results within 2 - 6 working days from receiving your samples. To get results: 1. Take a cheek-swab sample from each person being tested. 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 testing is compatible with all races, ancestry, and ethnic groups: White, Black, Hispanic, Asian etcetera. Home testing kits are not available to New York State residents. 0.5 lb and Model # 732064973388 GTIN 00880166470370 Ranked Best Seller