Do two men share the same paternal line? Y-STR testing compares the Y chromosome, which passes from father to son largely unchanged across generations, to determine whether two males share a common paternal lineage. It's useful when a direct paternity test isn't possible — think brothers, cousins, uncles, or extended family. Maybe you're confirming a family connection. Maybe you're filling in a gap in your family tree. Whatever the reason, Y-STR testing gives you a reliable answer.

We come to you across Fresno, Madera, and the surrounding Central Valley, so both men can test without a clinic visit. The collection is a simple cheek swab from each person, handled quickly and comfortably. We bring a compliance background, so every sample is collected accurately and documented properly. Because we come to you, the process stays convenient and private. You get a dependable result and help understanding what it means for your family.

You don't have to make sense of this alone. Call us, tell us who you're testing and why, and we'll explain how Y-STR testing works for your situation. We keep the process clear from start to finish. Results are ready in 5 business days. Choose Pillar Lab Services and confirm the connection you're asking about.