Short Answer
Complete Explanation
In the context of DNA testing, the phrase “not excluded” indicates that the laboratory’s analysis did not find genetic evidence sufficient to rule out a specified relationship. It is a negative exclusion result rather than a positive confirmation, meaning the tested individual remains a possible biological relative within the statistical limits of the test.
- Definition:
“Not excluded” means the DNA profile is compatible with the hypothesized relationship, but the test does not assign a probability that the relationship is true. - Statistical basis:
The result is based on comparison of allele sharing; if the observed sharing falls within the range expected for the relationship, exclusion is avoided. - Common applications:
Used in paternity, sibling, grandparent, and genetic genealogy testing where the goal is to eliminate impossible matches. - Limitations:
A “not excluded” outcome cannot distinguish between multiple possible relatives who share similar genetic overlap, such as full siblings versus half‑siblings. - Implications for users:
Individuals should interpret the result as an indication that the relationship has not been ruled out; further testing may be needed for confirmation.
Common Misconceptions
“Not excluded” proves a biological relationship.
It only indicates that the relationship has not been ruled out; confirmation requires a “included” or probability result.
All “not excluded” results have the same level of certainty.
The confidence varies with the number of markers analyzed and the specific relationship being tested.
FAQ
Does a “not excluded” result mean I am definitely related?
No. It only means that the test could not rule out the relationship. Confirmation requires additional analysis or a probability result.
Can a “not excluded” result be used in legal cases?
In most jurisdictions, a “not excluded” result alone is insufficient for legal proof of relationship; courts typically require a higher standard such as a probability of parentage above a set threshold.
How can I move from a “not excluded” result to a definitive answer?
You can request testing of additional genetic markers, test other family members, or use a more comprehensive kit that provides probability estimates.
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