Non-Invasive Prenatal Paternity Test: Confirm the Truth From Week 8

There are moments no one prepares us for. Discovering a pregnancy should be pure joy, yet sometimes it arrives with a question that weighs heavier than fear: who is the father of this baby? If you are here looking for answers, you should know there is a modern, safe solution. A non-invasive prenatal paternity test lets you reach certainty from the seventh week of pregnancy, with no risk to your baby and complete discretion. This guide explains exactly how it works, why it is safe, how much it costs, and how to access it in Colombia.

What is a non-invasive prenatal paternity test?

A non-invasive prenatal paternity test is a DNA analysis performed during pregnancy to determine, biologically, who the father is. Unlike other procedures, it does not require amniocentesis, a needle in the abdomen, or any method that carries a risk of miscarriage. Instead, it uses a simple blood draw from the mother, where the baby’s DNA naturally circulates.

Fetal DNA exists freely in the mother’s blood plasma from the early weeks of pregnancy. Specialized laboratories isolate this genetic material and compare it with the presumed father’s DNA to establish whether a biological relationship exists. The results are 99.99% reliable when the man is the father, and exclude him with complete certainty when he is not.

From which week of pregnancy can you take the test?

The non-invasive prenatal paternity test can be performed from the seventh week of pregnancy. This is one of its greatest advantages: you do not have to wait until birth to gain certainty. Most women take the test between weeks 8 and 20, once they know more about the pregnancy but still have plenty of time to make informed decisions.

Processing takes approximately 20 to 25 business days from the moment the laboratory receives the samples. In practice, if you take the test around week 10, you can expect results a few weeks later, giving you months to prepare emotionally and make the decisions that matter to you.

Is the non-invasive prenatal paternity test safe for the baby?

Yes, it is completely safe. The test only requires a blood draw from the mother, just like a routine lab test. There are no needles near the womb, no direct contact with the baby, and no risk of infection or complications.

The technology behind it is called next-generation sequencing (NGS), the same method laboratories use for other prenatal screenings, such as Down syndrome detection. Your data is protected under international ISO standards and Colombia’s data protection law (Ley 1581 of 2012). Thousands of women around the world take this test every year without complications. Your baby is completely safe.

How does the non-invasive prenatal paternity test work?

The process is simple, even though the science behind it is sophisticated.

Step 1: Sample collection. You provide a blood sample, roughly 10 ml. The presumed father provides a buccal swab, rubbing an applicator inside the cheek. These samples can be collected in different places, even in different cities or countries if needed.

Step 2: Shipment to the laboratory. The samples are sent to a certified international laboratory. At DNA en Casa, samples are processed by a European laboratory with more than 18 years of experience in prenatal genetics.

Step 3: DNA analysis. The laboratory extracts the fetal DNA from the mother’s blood plasma and identifies unique genetic markers, then compares them with the presumed father’s DNA.

Step 4: Results report. You receive a detailed report with your results, expressed as a probability of paternity: typically 99.99% if he is the biological father, or 0% if he is not.

Informational versus legal prenatal paternity test

There are two types of paternity tests: informational and legal. The non-invasive prenatal paternity test described here is informational, meaning it is for your personal knowledge and decision-making. A legal test requires that samples be collected by authorized professionals, that the identity of every participant be verified, and that the laboratory be accredited by the judicial authority (ONAC in Colombia). At DNA en Casa we focus on informational testing. When you need results with legal validity, for matters such as inheritance or custody, we refer you to an accredited laboratory like IdentiGEN, from the University of Antioquia. For most women, the informational prenatal test is enough: it gives emotional certainty and lets you make decisions during pregnancy without the whole world finding out.

How much does the non-invasive prenatal paternity test cost in Colombia?

The non-invasive prenatal paternity test costs approximately 4,700,000 Colombian pesos. This price includes:

• A free initial consultation
• Sample collection
• Processing at an international laboratory (GenePlanet)
• A detailed results report
• Complete confidentiality
• A teleconsultation with a genetic physician for special cases

The cost is higher than a standard paternity test because the samples are processed at certified international laboratories using cutting-edge technology. For many women, though, ending months of uncertainty during pregnancy is priceless.

How do you access the test in Colombia?

In Colombia, the non-invasive prenatal paternity test is available through specialized DNA testing companies such as DNA en Casa. First, contact DNA en Casa on WhatsApp for a free initial consultation. Explain your situation and you will receive clear guidance, without judgment. If you decide to move forward, you coordinate sample collection: yours at an authorized center, and the presumed father’s separately. The samples travel to the European laboratory, and you receive your results in about 20 to 25 business days, delivered privately to your email. No one needs to know you are taking the test.

Frequently asked questions about the prenatal paternity test

Can I take the test without the presumed father knowing?

You can provide a DNA sample from alternative sources, such as hair, but the most reliable result comes from his direct participation with a buccal swab. Either way, the result is yours and remains confidential, so you can gain the certainty you need for your own peace of mind.

What if the result confirms he is the father?

The result is yours to keep or to share. Some fathers want to take an active part in the pregnancy; others prefer distance. The decision is entirely yours.

What if the result shows he is not the father?

That, too, is your information. You have the right to this certainty during pregnancy so you can decide how to move forward.

Are the results legally valid?

The informational prenatal test is for your personal knowledge. If you need results that are valid in court, for inheritance or custody, you should request a legal test at an accredited laboratory such as IdentiGEN.

You have the right to certainty

If you are pregnant and have doubts about paternity, the first thing you should know is that you are not alone. The second is that you do not have to wait nine months for an answer. A non-invasive prenatal paternity test gives you certainty from week 8, with no risk to your baby and complete privacy. Pregnancy already gives you enough to process emotionally. You should not have to carry months of uncertainty on top of it. The answer exists, it is available in Colombia, and you can have it before your baby arrives.