DNA Evidence of Sibling Relationships for Service Centers, Domestic and International Field Offices

October 17, 2014

Because the DNA testing industry has not established probability standards for sibling-to-sibling DNA test results, USCIS cannot determine if sibling-to-sibling test results are sufficiently reliable. USCIS, therefore, may not afford any evidentiary weight to sibling-to-sibling DNA test results, and an officer may not suggest or consider sibling-to-sibling DNA testing for petitions filed. USCIS will, however, continue to rely on DNA testing results between parents and children. Parent-child DNA test results between one or both claimed siblings and the claimed common parent will be considered according to current policy relating to DNA testing for parent-child relationships.

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