Wondering if you can establish paternity when the alleged father isn’t available? Whether he is working abroad, unwilling to participate, or has sadly passed away, the answer is usually yes. At Brashan DNA Services, we help families across the UK navigate these sensitive situations every day with expert care and clinical precision.

Here are five essential things you need to know about testing without the father’s direct sample.

1. You can use "Complex Relationship" tests

If the father isn't available, we look at the next best thing: his close biological relatives. These are known as complex relationship tests. By comparing the child’s DNA with that of the father’s parents, siblings, or other children, our UK-accredited laboratory can determine the likelihood of a biological link. Common options include:

  • Grandparent DNA Testing
  • Sibling DNA Testing
  • Aunt or Uncle (Avuncular) Testing

2. Consent is a legal requirement

In the UK, the Human Tissue Act 2004 makes it illegal to test someone’s DNA without their informed consent. For any adult participating (like a grandparent or aunt), we require a signed consent form. For children under 16, a person with parental responsibility must provide consent. Never attempt to take a sample secretly, as these results cannot be used for any official purpose and may breach UK law.

3. Non-standard samples might be an option

In specific cases, such as when a father has passed away, we can conduct viability studies on non-standard samples. This might include items like used toothbrushes or nail clippings. While these are more complex to process, they can provide the answers you need when a mouth swab is impossible to obtain.

A lab technician processing a toothbrush sample for a DNA paternity test in a UK-accredited laboratory.

4. Choose between "Peace of Mind" and "Legal" tests

Before you order, decide what you need the results for.

  • Peace of Mind: A home kit for your own information.
  • Legal DNA Test: Required for the Home Office, Child Maintenance Service, or court proceedings. These require a "chain of custody," meaning a professional must collect the samples.

5. Speed and accreditation matter

When you’re waiting for life-changing news, every hour counts. We provide same-day results once your samples reach our lab. Our processes are handled by experts, ensuring you receive a report you can trust.

Ready to get started?
Don't let uncertainty linger. Use a provider that prioritises your privacy and accuracy. Look for our logo (ID: 1BUJ5jGQ7nAbL1dT7IZ_OgRVj6uhYGctg) to ensure you are working with the official Brashan DNA Services.

Call us today at +442046204341 or visit our Frequently Asked Questions to learn more about how we can help you find the truth.