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It is possible to safely identify whether a man is a baby’s biological father before the baby is born. This is achieved by a process known as Prenatal DNA testing (also known as prenatal paternity testing). This is a non-invasive method that can accurately determine paternity before birth using blood and mouth swab samples only.

In the past, invasive procedures (such as amniocentesis and chorionic villus sampling) would have been relied upon to gain a sample of an unborn baby’s DNA. These invasive methods incur a slight risk of miscarriage and can thus potentially harm the unborn child. AlphaBiolabs’ prenatal DNA test does not carry such risks.

How does the test work?

Because a baby inherits DNA from both of its parents, prenatal paternity tests can identify if a man is the father of a baby by looking at three samples: the man’s DNA, the pregnant woman’s DNA and the unborn baby’s DNA.

The baby’s DNA is analysed within the mother’s bloodstream and can be performed as early as 8 weeks after conception (or 10 weeks after the last period). The mother needs to provide a blood sample and the test is 100% safe for the unborn child with no side effects or risk of miscarriage. The alleged father’s sample involves a mouth swab that collects DNA from his cheek cells.

By examining the three DNA samples, it is possible to identify which half of the DNA is inherited from the mother and which half is from the father. If the tested man is indeed the biological father, both baby and father will share DNA. When the tested man is not the biological father there will be differences in the DNA of the man and the baby.

Results are available within 8–10 days for £875 or a faster 5-day service is also available for an additional £200 fee.

More information can be found in a longer article on our Learning Centre.

You can find out more about prenatal DNA testing by contacting our Customer Services team on 0333 600 1300 or emailing us at