Half Sibling DNA Testing
Determine whether two individuals share one biological parent with our half sibling DNA test kit. This test compares DNA profiles to calculate the likelihood that two people are half siblings, sharing either a biological father or mother, versus being unrelated.
For the highest accuracy possible, the mother must test.
What's Included:
- DNA collection swabs for both alleged half 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 performs advanced sibship analysis comparing the genetic profiles to calculate a half-sibship index. This statistical analysis determines the likelihood that the tested individuals share one biological parent. Results are delivered within 2-3 business days through our secure online portal.
When to Use This Test:
- You believe you share one parent with another person
- Discovering potential half siblings through DNA matching services
- The shared parent is unavailable or unwilling to test directly
- Personal peace of mind about family relationships
Important: This is a peace-of-mind (informational) test. If you need court-admissible results, please see our Legal Half Sibling DNA Test Kit.
Frequently Asked Questions
What does a half sibling DNA test determine?
A half sibling DNA test determines whether two people share one biological parent. This is common in situations where individuals suspect they share the same father but have different mothers, or vice versa.
Should the mother participate in a half sibling test?
While not required, including the mother's sample is strongly recommended for half sibling testing. The mother's DNA helps the laboratory isolate the paternal genetic contribution, significantly improving the accuracy and clarity of results.
Learn more: Full Sibling DNA Test | How DNA Testing Works