About this Test

Starting at your 11th week of pregnancy, you can confirm the paternity of the fetus with 99.9% accuracy. The test requires blood samples for the mother, collected following the procedure for an ordinary medical blood draw. The alleged father’s samples are collected using mouth swabs. The cost of the test is £899 and results will be ready in 7-10 working days.

We also offer an express testing service with results in just 4 working days from receipt of samples at the laboratory. The additional cost for express testing is £235.


Why Choose a Non-Invasive Test?

Pregnant mothers who need to confirm the paternity of their unborn baby can opt for procedures like amniocentesis or chorionic villus sampling. But these procedures are far from pleasant to undergo; they require insertion of syringes into your womb, they have side effects, and you could even miscarry. We do offer a DNA test before birth using samples of amniotic fluid or chorionic biopsy but we do not suggest clients opt for this test due to the risks. With our non-invasive test you have none of these worries: a simple medical blood draw anytime beginning from your 10th week and we will confirm whether the tested alleged father is the biological father of your baby.

How Accurate are Prenatal Paternity Test Results?

Results are as accurate as science can get and will highlight one of two possibilities:


  • The alleged father cannot be excluded as the biological father. In this case, the tested male is the biological father and we will confirm this with a 99.9% probability.
  • If the tested alleged father is not the biological father and is excluded as the biological father of the unborn baby we will exclude him with a 100% probability.

To view our Terms and Conditions, click here. 

How is this Prenatal Test Possible?

Our bioinformatics-based prenatal test relies on the analysis of what scientists call cell-free fetal DNA. The use of this cell-free fetal DNA makes our test more accurate than other non-invasive prenatal tests which use fetal DNA that is still enclosed inside the fetal cells (nucleated fetal DNA). A prenatal test with cell-enclosed DNA carries a chance of misdiagnosis. There is 0% chance of misdiagnosis with our prenatal paternity test that uses cell-free DNA.

We use Single nucleotide SNP microarray technology to analyze hundreds of thousands of markers in the blood samples. Advanced methods of analysis not only help us distinguish the fetus’s DNA from that of the mother but it also enables us to give you the accurate results you need.

The only time we cannot conduct the test is if the Mother is expecting twins or if the alleged Fathers are close blood relatives.


How do I collect my samples?
How many weeks pregnant must I be to take the test?
Should I test both fathers?
What samples are collected from the alleged father?
Will the test results indicate the gender of the child?

How do I collect my samples?

GTL sends out all prenatal testing kits by Royal Mail Special Delivery. The kit contains sterile, vacutainer plastic tubes which will hold the mother’s blood samples. Blood is drawn directly from the vein as happens with any standard blood draw. Ensure the blood collection is carried out by a qualified nurse or phlebotomist. You will be provided with 2 tubes for the mother’s blood. Both tubes provided need to be filled. The alleged father’s samples are collected using sterile mouth swabs. Instructions and consent forms are also provided inside the kit. The kit has a special biohazard label which means your kit is also suited for shipping and transport of biological substances.

The non-invasive prenatal paternity test includes a pre-paid courier service for return of samples to our laboratory. Contact the number provided and arrange an appointment to have your samples collected. Ideally, organise the collection of your samples on the same day as the blood draw.

How many weeks pregnant must I be to take the test?

The expectant mother must be in at least her 10th week following her last menstrual cycle. We cannot directly assist you in confirming how many weeks pregnancy you are but we can guide you to a pregnancy calculator.

Should I test both fathers?

If the samples for both fathers are available we strongly advise you to send samples for both fathers. The second alleged father costs £250. If the father lives in a different location, Genetic Testing Laboratory can send out a separate kit. There will be a small added fee in such cases.

What samples are collected from the alleged father?

This test can only be done with blood samples for the mother. We require mouth swab samples for the father. We are unable to carry out this test with any other type of sample. GTL provides you with a complete kit. Just fix an appointment with any nurse, lab technician or phlebotomist for the venal blood draw.

Will the test results indicate the gender of the child?

This test is not aimed at establishing the gender of the child. If you wish to find out whether you are expecting baby girl or baby boy, we offer an additional option with this test.

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