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Immigration DNA Testing: Everything You Need to Know

by | Oct 9, 2025 | Legal & Immigration

Immigration DNA testing plays an important role in confirming biological relationships for visa and immigration applications. Whether you’re reuniting with family members or applying for a British passport, DNA testing provides a secure and reliable way to streamline the process. Understanding the key steps involved and requirements of immigration DNA testing will allow you to navigate this journey with confidence.

What is immigration DNA testing?

Immigration DNA testing is used to confirm biological relationships between family members, as piece of evidence that supports immigration-related purposes, including:

  • British passport applications based on a familial relationship,
  • joining family members in the UK,
  • family reunification applications, where the relationship to a sponsor must be established or
  • supporting a visa application.

While it is not a mandatory requirement by the Home Office, DNA testing is commonly requested by immigration authorities when:

  • documents such as birth certificates are unavailable, insufficient or deemed unreliable,
  • the applicant wants to be proactive by submitting all relevant evidence,
  • or the Home Office or other authority invites the submission of further evidence.

The results of DNA testing have a very high accuracy rate of 99.99%, making them a trusted resource for authorities.

What relationships can be tested?

While parentage (paternity or maternity) is the most common relationship tested for immigration purposes, other connections can also be confirmed. These include siblingship testing and extended family testing, which analyses relationships like grandparentage or avuncular (aunt/uncle to niece/nephew). The specific test carried out is always tailored to the applicant’s unique circumstances.

Preparing for immigration DNA testing

If you need a DNA test for immigration purposes, it’s essential to be prepared. Staying organised throughout the process is key. Keep your identification documents and any requested paperwork ready for sample collection and communicate early with family members – especially those in different locations, to ensure a smooth and timely scheduling process.

It is important to understand that these tests have a strict set of requirements, including the involvement of an accredited laboratory.

Choosing an immigration DNA testing provider

When selecting a provider for your DNA test, it is essential to ensure they meet the following criteria to guarantee the results are admissible:

  • Accreditation – the laboratory must hold the UKAS ISO 17025 accreditation and follow the Home Office process for sample collection. This is a key requirement for acceptance by authorities such as UK Visas and Immigration. Fortunately, NorthGene™ is Ministry of Justice approved and UKAS accredited, and our dedicated team stringently adheres to the process set out by the Home Office.
  • Experience – Choosing a provider with a proven track record in handling immigration DNA cases can help you streamline the process. Their experience ensures that they can provide support and guidance throughout.
  • Global Reach – If a family member lives outside of the UK, ensure the provider can facilitate global sample collection.
  • Chain of Custody – A strict chain of custody must be maintained from the moment of sample collection through to testing and analysis. This eliminates the risk of tampering or contamination, ensuring the integrity of the results.

The testing process with NorthGene™

The DNA testing process NorthGene™ is streamlined to ensure accuracy and reliability, consisting of three clear steps:

Step 1: Case Registration

The process begins by submitting your registration form through our website. Be sure to provide as much detail as possible, including:

  • the location of all participants (UK or abroad),
  • the location for sample collection, e.g. participant’s home, GP or solicitor’s office,
  • contact details for a doctor abroad if a sample kit needs to be sent internationally (name, address, email and phone number).
  • if you require NorthGene™ to inform the Home office that processing has started,
  • contact information for the participants so that sample collection can be arranged and
  • the details of who should receive the final report, such as the participants and/or the solicitor working on the case.

Step 2: Sample Collection

DNA samples are collected using a simple buccal swab. This involves rubbing a swab on the inside of your cheek for 20 seconds. Two samples are collected for each participant.

You will also need to bring a form of ID to the appointment, such as a driver’s licence or passport. The sample collector will take a photo of you and sign this at the time of collection.

Step 3: Analysis and results

Once collected, samples are securely sent to our UK-based laboratory for analysis and comparison. A report confirming or denying the biological relationship will be issued the following working day from sample receipt and sent directly to those listed on the registration form.

Why choose NorthGene™?

At NorthGene™, we provide a seamless, reliable immigration DNA testing service. As a Ministry of Justice approved and ISO 17025 accredited laboratory with over 30 years of experience, we’re proud to help families reunite worldwide.

From the moment you register a case, you’ll receive expert guidance and transparent communication. Our comprehensive range of DNA relationship tests are all priced in compliance with the Legal Aid Agency, delivered efficiently and accurately in accordance with the Home Office requirements. This ensures that our results are not only accessible and reliable but also fully admissible by key authorities, providing the supporting evidence that you need.

To learn more about our immigration DNA testing services, click here, or call us on 0101 233 1414 to speak to a member of our friendly Customer Services team.

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