Non-Invasive prenatal paternity test

For the fetal sample, at least 10 ml of peripheral blood from the pregnant mother is required, collected in special tubes. Please contact us to arrange the ideal day for blood collection at our facilities. An appointment is necessary. When scheduling, be sure to mention that it is for a Non-Invasive Prenatal Paternity Test.

For the alleged father’s sample, the following types of biological samples are acceptable:

• At least 2 ml of blood with EDTA anticoagulant
• At least 5 blood spots larger than 0.3 cmÇ on FTA paper
• At least 6 swabs taken from the inside of the mouth. Be sure to let them air dry for at least 1 hour and avoid storing them in plastic; instead, place them in a paper envelope.

This technique offers the significant advantage of posing no risk to the fetus. However, there are certain cases in which it cannot be performed:

• If you have received an allogeneic blood transfusion (blood donated by another person) in the past year.
• If you have undergone a bone marrow transplant, organ transplant, or stem cell therapy in the past year.
• If you have received treatments involving exogenous DNA, immunotherapy, or cell therapy in the past month.
• If you have had a miscarriage in the last three months.
• If you have undergone embryo reduction (termination of one or more fetuses during a multiple pregnancy).
• If the pregnancy was achieved through surrogacy.
• If you have undergone in vitro fertilization (IVF).
• If you are less than 8 weeks pregnant.
• If the individuals involved are related.
• If it is a multiple pregnancy.

Allogeneic blood transfusions, transplants, and cell therapy may introduce exogenous DNA sources that could compromise the test results. In cases of recent miscarriage or embryo reduction, residual fetal DNA may remain, potentially affecting the accuracy of the test.

This test is not suitable for multiple pregnancies (with more than two fetuses), pregnant women with oncological diseases, preeclampsia, or congenital autoimmune disorders.

A pregnancy of fewer than 8 weeks or an inaccurate gestational age may result in insufficient fetal genetic material, leading to inconclusive results.

In the case of a dizygotic twin pregnancy, each fetus may have a different father (heteropaternal superfecundation). If only one alleged father is tested, the results would apply only to one fetus and would not provide accurate conclusions for both simultaneously.

The cost of the non-invasive prenatal paternity test is €1,200, VAT included. This amount must be paid in advance and in full at the start of the process.

If free fetal DNA or paternal DNA cannot be obtained, an additional fee of €250 will apply for a second sample analysis.

Additionally, fetal sex determination is available for an extra €50.

Similarly, screening for trisomies/aneuploidies in chromosomes 21, 18, 13, X, and Y, as well as testing for up to 93 types of microdeletion/microduplication syndromes, is available for an additional €150.

Payment can be made using one of the following methods:

• Bank transfer
• Credit card
• Credit card or cash at our laboratory

The results of the study will be ready within approximately 12 to 15 days from the day after sample collection. You will receive your report, completely confidentially, through your preferred method:

• Email
• Ordinary mail
• Courier service, with an additional cost of €15
• In-person pickup at our San Sebastián de los Reyes facility, upon verification of the applicant’s identity