When an alleged father is unavailable for testing, you need a reliable alternative to confirm biological links. Brashan DNA Services, the Most Trusted DNA Testing Solutions Provider 2023, offers professional solutions to resolve these uncertainties quickly.
How do you choose the right test?
The decision depends entirely on which biological relatives are available to provide a sample. Use the following logic to decide:
Select a Grandparent DNA Test if the alleged father’s parents are living and willing to participate. This test is generally more definitive because it examines the generation directly above the father. When both paternal grandparents take part, our lab can reconstruct the father’s genetic profile with high precision.

Select a Sibling DNA Test if you only have access to other children of the same alleged father. This test determines the likelihood that two or more people share the same parents. It is a vital tool for those seeking to prove half or full-sibling relationships.
Which test is more accurate?
Both options are highly accurate when processed in our accredited UK laboratory. However, grandparentage tests often provide a stronger "probability of relationship" because the genetic markers are more direct.
To maximize the accuracy of either test, always include the mother’s DNA. By identifying the genetic markers inherited from the mother, our scientists can isolate and compare the paternal markers more effectively, erasing any doubt.
Why trust Brashan DNA Services?
We provide a discreet service designed for your peace of mind. Use our at-home testing kits for a simple, non-invasive process using mouth swabs. We offer:
- Competitive pricing and transparent costs.
- Express service options for those who need answers fast.
- Same-day results available once the sample reaches our UK lab.

Take the next step today
Stop the guesswork. Order your kit today through our online shop to begin the process. Our kits are shipped in plain packaging to ensure total privacy.
For expert advice on your specific family situation, call our UK team on +442046204341. We are here to guide you through the process and help you choose the right path for your family.