There are cases where the identity of a child’s biological father can be determined prior to the child’s birth. One of the ways this is able to be achieved is through NIPP testing. NIPP testing can determine paternity during a pregnancy with a sample of the pregnant woman’s blood and a sample of the possible father’s DNA. One of the biggest differences between this type of testing and other testing that is performed on the mother during a pregnancy is that this testing does not require a sample to be taken and a procedure to be performed on the mother where a needle is inserted through her abdomen and into her uterus.
Non-invasive prenatal paternity testing (NIPP) is becoming increasingly popular, and there are several considerations that women should be aware of when researching laboratories that perform this testing.
How does NIPP testing work?
NIPP testing works by identifying cellular DNA of a fetus in the blood of the mother and analyzing it in comparison to a possible father of the child.
Non-invasive prenatal DNA analysis in general has become widely used and permits analysis of cell-free fetal DNA in the maternal blood. NIPP testing should not be confused with NIPT, which generally analyzes the risk of chromosomal abnormalities of a fetus.
How Does Prenatal Paternity Testing Work?
The process is relatively straightforward. A healthcare professional collects blood from the pregnant woman, while the alleged father usually provides a cheek-swab sample.
The laboratory then separates and analyzes fetal DNA fragments present in the maternal sample. Genetic markers are compared with those from the alleged father to determine whether the genetic evidence supports or excludes biological paternity. Modern approaches may use large panels of SNP genetic markers for this comparison.
When Can Testing Be Done?
The exact minimum pregnancy stage varies by laboratory and testing method. Some providers offer testing from approximately seven or eight weeks of pregnancy.
Because requirements differ, confirm the pregnancy week, sample requirements, and laboratory procedure before scheduling the test.
Is NIPP Different From Invasive Testing?
Yes. Traditional prenatal paternity testing can involve procedures such as amniocentesis, which requires collecting amniotic fluid using a needle. NIPP instead uses blood drawn from the mother's arm and therefore avoids directly entering the uterus.
This is one reason pregnancy paternity testing using a non-invasive method may be considered when someone wants information before birth without an invasive fetal procedure.
However, “non-invasive” does not mean every aspect of testing is risk-free or appropriate for everyone. The maternal blood draw has the ordinary minor risks associated with blood collection, and medical questions should be discussed with a qualified healthcare professional.
What Should You Check Before Ordering a Test?
Choosing a laboratory involves more than comparing prices. Before proceeding, check:
- Laboratory credentials: Look for relevant accreditation and transparent quality standards.
- Testing method: Ask which genetic markers and laboratory techniques are used.
- Pregnancy requirements: Confirm the minimum gestational age and whether special circumstances affect eligibility.
- Legal requirements: A personal test and a legally documented test may have different collection and identification procedures.
- Turnaround time: Ask when processing begins and how results are delivered.
- Privacy: Understand how DNA samples and genetic information are stored and handled.
Accreditation can be particularly important when results may be needed for legal purposes. Independent guidance also recommends checking a laboratory's credentials, technology, and support before choosing prenatal paternity testing.
Choosing a Reliable Paternity Test Provider
For readers researching providers, Choice DNA offers non-invasive prenatal paternity testing using maternal blood and an alleged father's DNA sample. Its published information states that its NIPP service can be performed from around eight weeks of pregnancy and uses laboratory analysis to compare genetic information.
A person researching testing options might describe the service as useful when they want to understand the collection process, testing requirements, and available options before making an appointment. As with any genetic testing provider, consumers should independently verify current laboratory credentials, pricing, turnaround times, and whether a particular test satisfies their intended legal requirements.
Final Thoughts on DNA Testing During Pregnancy
The non-invasive prenatal paternity testing (NIPP) procedure allows parents to determine biological paternity during pregnancy without the fetal risk. Laboratories utilize the cell-free fetal DNA found in the blood of expecting mothers and compare the DNA sequences with potential fathers to obtain prenatal paternity information.
There are a variety of service providers to choose from that offer prenatal paternity testing. When deciding on a provider, review the laboratory’s accreditation, testing methods, and policies regarding personal vs. legal data confidentiality. It is best to consult a licensed health care professional to assist you in selecting a service provider that is appropriate to meet your legal and/or ethical needs.
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