Considering a DNA test during pregnancy can feel like a big step, but the process is simpler and more accessible than many people expect. Non-invasive prenatal DNA testing offers a safe and reliable way to determine paternity before a baby is born. At NorthGene™, we specialise in safe, non-invasive prenatal DNA testing, supporting families across the UK with accurate and reliable results, and we’re here to help you every step of the way – but how exactly does a prenatal DNA test work?
We’ve broken the process down and answered some of your most common questions…
Where can I get a DNA test while pregnant?
It’s a common misconception that prenatal DNA testing must take place in a specialised clinic with an obstetrician. In reality, the process is much simpler and more convenient.
A non-invasive prenatal paternity test can be carried out from as early as 8 weeks into pregnancy. At NorthGene™, we prioritise your comfort and privacy. Our prenatal paternity tests are despatched through our UK-wide network of independent sample collectors, who will come to you and collect your samples at a location of your choice – this is most commonly your home. Unlike many services, NorthGene™ offers fully managed, at home collection, removing the need for clinic visits.
Alternatively, we can send a test kit directly to your GP, where they can assist with sample collection instead, if preferred.
For accuracy and safety, all samples must be collected by a trained and qualified professional.
What are the samples?
To carry out analysis for a prenatal DNA test, we require three samples:
- From the mother
- A simple blood sample
- A cheek swab
- From the potential father
- A cheek swab
The process is quick, straightforward and designed to be as comfortable as possible. Additionally, the blood sample is retrieved through a simple blood draw, so it does not intrude on the baby’s environment – this means it is completely non-invasive and there is no risk to the mother or baby.
The testing process
To determine paternity before birth, we analyse all three collected samples.
During pregnancy, the baby’s DNA is naturally present in the mother’s bloodstream. This is known as circulating cell-free foetal DNA (cffDNA).
We use the mother’s cheek swab to isolate the baby’s DNA in the blood sample. At our UK laboratory, our experienced scientists analyse each sample using next-generation sequencing to compare this with the DNA profile of the potential father, allowing us to determine paternity with greater than 99.999% accuracy, providing clear and reliable results when it matters most.
How long does a prenatal paternity test take?
The sample collection process itself takes just 5-10 minutes to complete.
Once the samples have been received at our UK laboratory, testing is carried out with precision and care by our expert team. Results are issued within 5-7 working days of sample receipt via email.
The entire process is quick and non-invasive from start to end, meaning there is no unnecessary stress or risk placed on either the mother or the baby.
Trusted prenatal DNA testing with NorthGene™
Choosing a prenatal DNA test is a big, personal decision, and we understand the importance of feeling supported, informed and comfortable throughout the process.
With NorthGene™, you can complete your test safely and discreetly from home, with professional sample collection and highly accurate results you can trust. Our UK-based laboratory and experienced team ensure every test is handled with the highest standards of care and precision.
If you have any questions about the process, our friendly team is here to help, or you can get started and order your test today.




