Library.

“Before arresting a suspect identified through familial DNA searching, investigators are required to obtain and test the suspect's own DNA to confirm an exact match.”

The evidence does not support a universal rule that police must confirm a familial-DNA lead by testing the suspect’s own DNA before any arrest. Confirmatory testing is widely recommended and may be required by particular policies or for evidentiary use in charging or court, but arrest authority generally depends on jurisdiction-specific probable-cause standards. The claim overstates guidance and practice into a blanket legal requirement.

“Scientific studies show that the risk of misidentification from partial DNA matching in familial DNA searching is very low.”

The claim overstates what the literature shows. Some studies do find extremely low false-positive rates for one narrow error type: unrelated people being flagged as close relatives under strict methods. But familial searching also produces meaningful misidentification risks in other important scenarios, especially confusing distant relatives with first-degree relatives, so the blanket “very low” characterization is not supported.