« AlphaBiolabs Blog

If there is any doubt over the paternity of a baby, the mother (and potential father) often want to find out the truth as soon as possible.

In the past, establishing prenatal paternity used to involve invasive procedures that extracted the baby’s DNA from the womb so it could be analysed. Such procedures would be a choice between amniocentesis or chorionic villus sampling, both of which carry a small risk of causing a miscarriage.

Advances in science now mean that it is possible to find out the paternity of a baby before birth without posing any risk to the unborn child, or mother. AlphaBiolabs’ non-invasive prenatal DNA test can determine the paternity simply by taking a blood sample from the mother and a mouth swab from the father.

This means that the test poses no more risk than the blood tests expectant mothers are routinely given as part of their antenatal care. There are no side effects to this prenatal paternity test.

How does the prenatal paternity test work?

During pregnancy, some of the baby’s DNA enters the mother’s bloodstream. This is known as foetal circulating cell-free DNA (ccfDNA). AlphaBiolabs is able to separate this from the mother’s DNA for testing using the very latest scientific equipment.

Scientists isolate and extract the baby’s DNA using single nucleotide polymorphism (SNP) microarray technology. The unborn child’s DNA will then be compared to the DNA samples taken from the mother and the potential father.

Our geneticists will study the DNA samples to work out which half of the baby’s DNA is inherited from the mother and which is from the father. Our team will be able to ascertain whether the father and baby are biologically related.

This test can be performed at any point of pregnancy after 8 weeks’ gestation. As a woman’s pregnancy is calculated from the date of her last period, this is around 6 weeks after conception.

For £875, you can find out your results within 7 working days. Alternatively, you can choose to upgrade to our express 4-day service for an additional £200. You can choose to either pay the whole amount up-front or take advantage of our interest-free credit option and pay in instalments.  Find out more by reading our Learning Centre article on prenatal paternity testing. Order your prenatal DNA test online now or talk to our team by calling 0333 600 1300 or emailing