Home Sibling DNA Test Kit

Determine Sibling Relationships With Confidence

Determine whether two or more individuals are full siblings, half siblings, or biologically unrelated with our at-home sibship DNA test kit. This test is especially valuable when the alleged father is unavailable or unwilling to test — a confirmed biological child of the father can test alongside the child in question to establish a family connection.

What's Included:

• DNA collection swabs for two alleged siblings
• Step-by-step illustrated instructions
• Pre-paid return shipping label
• Secure online results portal access

How It Works:

Each participant provides a painless cheek swab sample at home. Our state-of-the-art laboratory analyzes the DNA profiles of both individuals, comparing genetic markers to calculate a sibship index that determines the statistical likelihood they share one or both parents. Results are delivered in 2-3 business days through our secure online portal.

Accuracy & Recommendations:

Sibship testing without the mother typically provides 85-95% accuracy. Adding the known biological mother's sample significantly improves results to 95-99%+, as it allows our lab to isolate paternal genetic contributions. We strongly recommend including the mother's sample when possible — you can add a Mother participant to this test during checkout.

Common Uses:

• Determining biological relationships when the father is unavailable
• Confirming full vs. half-sibling relationships
• Establishing family connections for personal knowledge
• Immigration and inheritance-related relationship verification