To verify any biological relationship, genetic testing is a useful tool; when no other form of credible evidence is available, this tool can make your job easy. If you are talking about immigration visas, DNA testing is an integral part. There are also other commonly tested relationships that depend on DNA testing include paternity, maternity, full-siblingship, or half-siblingship. One more thing to know, more distant relationships cannot be proven reliably using genetic testing.
You can say that DNA technology is the only non-documentary method accepted for proof of biological relationships. However, due to the reasons such as expenses and more complexities, DNA testing should be used only if no other credible proof of the relationship exists.
Please note that all costs of genetic testing must be paid by the petitioner and/or beneficiary. Also, you should pay the laboratory in advance.
It is important to know that submitting to testing does not guarantee the subsequent issuance of a visa.
What type of DNA sample method is used?
Most DNA testing labs prefer DNA samples by buccal (cheek or mouth cavity) swab. In this technique, cells are collected from the inside cheek or mouth using a long cotton swab.
Furthermore, buccal cheek swabs are mostly used for blood samples because they are painless, non-invasive, and easier to ship.
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