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In order to determine the identity of the father of a baby, a prenatal paternity test (prenatal DNA test) can be undertaken during pregnancy.

It is common for paternity tests to take place once the baby has been born but waiting until this moment can cause unnecessary stress for the mother and the unborn baby. Therefore, choosing to have a prenatal test will identify whether the man is the biological father. And this test can be carried out just 6 weeks after the baby has been conceived.

What is involved in a prenatal paternity test?

The alleged father will be required to provide a sample of cheek cells using a mouth swab. The mother needs to provide a blood sample. From this, it is possible to examine the DNA of the baby because DNA from the foetus enters the bloodstream of the mother during pregnancy.

The DNA samples that have been collected from both the mother and the potential father are then compared to the DNA of the baby. Our geneticists can then determine whether there is a biological link between the man and the foetus. As the baby inherits his or her genes from both the mother and the father, if the tested man does not share any similarities in DNA with the baby then he is not the father.

This is a non-invasive DNA test and therefore poses no risk to the pregnancy. Invasive prenatal tests often involve collecting amniotic fluid via a needle into the womb, which are associated with a risk of miscarriage.

The process of carrying out the test is confidential, although we will require consent from both parties who are providing samples of DNA.

Collecting the sample – How is it done?

A nurse, phlebotomist or one of AlphaBiolabs’ expert sample collectors will take the blood sample from the mother. It is also recommended that a sample collector takes the mouth swabs as this will ensure sufficient sample is provided and removes the risk of any cross-contamination.

There is no requirement for the mother or the potential father to provide their samples in the same location. However, it is recommended that they are taken at the same time as this will reduce any delays. All blood samples need to be sent immediately to the laboratory to avoid the red blood cells from breaking down.

If necessary, one of our sample collectors can visit you at a convenient address. Alternatively, you have the option of attending one of the many Walk in Centres that we have located throughout the UK. If you choose to use a Walk in Centre, it can help to avoid collection fees and makes it possible for both parties to give their samples at the same time.

The prenatal paternity test costs £875 and the results will be delivered within 7 working days. Should you want to receive the results faster, you can pay an extra £200 to speed up the process. This will ensure you receive the results in 4 working days. To help you pay for this test, a 6-months interest-free credit option is also available upon request. Call now on 0333 600 1300 to apply.

How to order a non-invasive DNA test

You can place your order here. For further information, please contact our Customer Services team on 0333 600 1300 or email