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DNA Testing Accredited Laboratories


020-363-6622, Monday through Thursday 1pm to 4pm, or email at  

Overview - DNA Testing

Genetic testing is a useful tool for verifying a stated biological relationship when no other form of credible evidence is available in conjunction with an immigrant visa (IV) application, US passport or Consular Report of Birth Abroad (CRBA) of a US Citizen. Commonly tested relationships that utilize DNA testing include paternity, maternity, full-siblingship, or half-siblingship. DNA technology is the only non-documentary method accepted for proof of a biological relationship.

When genetic testing appears warranted, a Consular Officer may suggest individuals to undergo DNA testing to establish the validity of the relationship(s). Please note that such testing is entirely voluntary; and that all costs of testing and related expenses must be borne by the petitioner and/or beneficiary and paid to the laboratory in advance. In addition, submitting to testing does not guarantee the subsequent issuance of a visa or evidence of US Citizenship. 

What Type of DNA Sample Method Is Used?

Deoxyribonucleic Acid (DNA) testing is the most accurate and widely available technology to test a biological relationship. The preferred specimen collection technique for DNA testing is by buccal (cheek or mouth cavity) swab. When buccal swabs are taken, cells are collected from the inside cheek or mouth using a long cotton swab. While there are different types of DNA tests, buccal cheek swabs are used rather than blood samples because they are easier to collect, non-invasive, painless, and easier to ship.

Accredited Laboratories


If there is no laboratory in your area, contact any lab on the list to arrange for sample collection near you.

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