When the most direct test is not possible, relationship DNA testing can usually answer the underlying question through a different path: aunts and uncles, grandparents, twins, or deeper lineage analysis. Different tests fit different situations.
All relationship tests at a glance.
Relationship tests
| Test type | Best for | Participants | Accuracy |
|---|---|---|---|
| Paternity | Establishing fatherhood directly | 2 to 3 | 99.99% |
| Maternity | Establishing motherhood directly | 2 to 3 | 99.99% |
| Sibling (full or half) | When a parent is unavailable | 2 to 3 | Up to 99% |
| Grandparent | When the alleged father is unavailable | 3 to 4 | Up to 99% |
| Aunt or uncle | When grandparents are unavailable | 2 to 3 | Up to 99% |
| Twin zygosity | Identical vs fraternal twin determination | 2 | 99.99% |
| Y-chromosome lineage | Tracing the paternal line | 2 (males only) | 99%+ |
| Mitochondrial lineage | Tracing the maternal line | 2 | 99%+ |
Questions about which option is right for you? (866) 873-0879.
Specialty tests
Explore individual tests.
Sibling
Sibling DNA test
Full and half sibling analysis.
Learn moreGrandparent
Grandparent DNA test
Establish paternity through the grandparents.
Learn moreLegal
Legal paternity test
Court-admissible chain-of-custody DNA testing.
Learn morePersonal
At-home paternity test
Private cheek-swab kit, results in 1 to 3 days.
Learn more
Aunt-uncle, twin zygosity, Y-chromosome, and mitochondrial tests are quoted on the call. Call (866) 873-0879.