That doesn't seem to be quite how it works; apparently the DNA test by itself is not sufficient, and one does need some form of paperwork. Per an explanation b

That doesn't seem to be quite how it works; apparently the DNA test by itself is not sufficient, and one does need some form of paperwork. Per an explanation by a private law office: A DNA test can be used to obtain Israeli citizenship, but this is reserved to prove that a person is the child of an Israeli citizen. According to Israeli law, if a child is born to an Israeli mother or father abroad, they can be granted Israeli citizenship. The DNA test is used to authorize this, proving this familial link. We discuss more about obtaining a paternity test in Israel in another article. In some very rare cases, a DNA test can be used to prove their relation to a Jewish parent, sibling or grandparent, even though the applicant doesn’t have documents proving this relationship, but said person has to have documents verifying that they are Jewish. https://lawoffice.org.il/en/israeli-citizenship-dna-test/ https://lawoffice.org.il/en/israeli-citizenship-dna-test/