DNA testing can help answer questions about biological relationships, but not every DNA test serves the same purpose. Paternity tests, sibling tests, ancestry tests, and medical genetic tests analyze genetic information differently and provide different kinds of answers.
Before ordering a test, identify the relationship you want to investigate and whether you need results for personal knowledge or a legal matter.
This guide explains common DNA testing misconceptions, including sample collection, accuracy, cost, and the differences between legal and at-home testing.
Quick Answers About DNA Testing
Is DNA testing complicated? Many relationship tests use cheek-swab samples. Legal testing adds identity verification and documented sample collection.
Are all DNA tests the same? No. Relationship, ancestry, and medical genetic tests serve different purposes.
Can an at-home test be used for court? A standard self-collected at-home paternity test does not follow the documented chain-of-custody process required for legal testing.
Do sibling tests always give a definite answer? No. Some results are inconclusive, and additional family members may need to participate.
Does a paternity test reveal medical conditions? A standard paternity test is designed to evaluate a biological relationship, not diagnose inherited conditions.
Myth 1: DNA Testing Is Complicated
Fact: Many relationship tests use a straightforward cheek-swab collection process.
For many paternity and family relationship tests, DNA is collected by swabbing the inside of the cheek. An at-home test allows participants to collect their own samples, while a legal test requires verified identities and documented handling of the samples.
The right collection process depends on how you plan to use the results:
Personal knowledge: Review at-home DNA test kits, where available.
Legal purposes: Contact GameDay DNA to arrange a collection appointment and confirm the requirements for your case.
Visit our DNA collection locations page to review collection information.
Before purchasing, confirm which participants need to test and whether the collection method meets your intended purpose.
Myth 2: DNA Testing Is Only Used in Criminal Investigations
Fact: DNA testing also helps investigate biological family relationships.
DNA testing is used for more than forensic investigations. Relationship tests can evaluate paternity, maternity, and other biological family connections. Other types of genetic testing explore ancestry or assess particular health-related questions.
GameDay DNA’s relationship-testing information includes:
These tests are not interchangeable. Choose a test based on the relationship you want to investigate rather than assuming one DNA test can answer every family, ancestry, or health question.
Myth 3: Every DNA Test Costs the Same
Fact: The total price depends on the test and the services included.
Before purchasing a DNA test, ask for a quote that identifies the test, the participants, and the collection arrangements.
Useful questions include:
Does the quoted price cover all participants?
Are collection fees included?
Are shipping or applicable taxes additional?
Is the test for personal knowledge or legal purposes?
Is rush processing available, and what does it cost?
When is the remaining balance due?
Contact GameDay DNA to confirm current pricing and payment options for the specific test you need. Avoid choosing a test based only on a starting price without checking what the purchase includes.
Myth 4: Every DNA Test Is “Over 99% Accurate”
Fact: Results must be interpreted according to the type of test.
Paternity testing, sibling testing, and ancestry testing do not produce the same kind of result.
For paternity testing, a laboratory report typically provides a probability of paternity when the tested man is not excluded. DDC explains that its paternity reports may show a probability of 99.99% or higher, or 0% when the tested man is excluded. That figure should not be applied to every type of DNA test.
Sibling testing evaluates competing relationship possibilities. Its findings can be conclusive or inconclusive, depending on the genetic evidence and the participants tested.
Ancestry testing estimates ancestral origins by comparing genetic variations with reference databases. Those estimates are not equivalent to a paternity probability.
Review the laboratory accreditation information and ask how your specific test’s results will be reported.
Myth 5: An At-Home DNA Test Is the Same as a Legal DNA Test
Fact: Legal testing requires identity verification and a documented chain of custody.
An at-home paternity test can provide information about the samples submitted to the laboratory. However, self-collection does not establish the verified identities and documented sample handling required for legal testing.
A legal DNA test follows a chain-of-custody process—a record of who collected, handled, and submitted the samples. The collector also verifies the participants’ identities.
If you need results for a court, attorney, child-support matter, or another official purpose, confirm the requirements before ordering or collecting samples.
GameDay DNA offers legal testing only for New York clients; at-home kit options are not offered there.
Myth 6: Knowing Your Parents Means Relationship Testing Cannot Help
Fact: Testing may help investigate other biological relationships.
Knowing your parents does not necessarily answer every question about your biological family. Sibling or grandparent testing may help investigate a relationship when direct parent-child testing is unavailable.
The laboratory needs to know which relationship is being evaluated and which relatives can participate. Sibling testing, for example, may compare full-sibling, half-sibling, and unrelated possibilities.
Explore sibling DNA testing or grandparent DNA testing and contact GameDay DNA to discuss the available participants.
Relationship testing should not be presented as a medical screening or ancestry service. Those are separate categories of genetic testing.
Myth 7: Sibling DNA Tests Always Provide a 100% Definite Answer
Fact: Some sibling results are inconclusive.
Sibling testing can help evaluate whether two people share one or both biological parents, but it does not always produce a definitive conclusion. DDC explains that some sibling results fall into an inconclusive range and require additional participants.
Depending on the family circumstances, the laboratory may recommend including a parent or another relevant relative. Do not assume that adding any family member will automatically resolve the result.
Before ordering, explain the suspected relationship and which relatives are available to test.
Myth 8: A Relationship DNA Test Also Diagnoses Health Conditions
Fact: Medical genetic testing is a separate service.
A standard relationship DNA test evaluates biological relatedness. It is not designed to diagnose an inherited disease or provide a comprehensive health-risk assessment.
Clinical genetic testing investigates particular medical questions and is commonly arranged through a healthcare provider. Direct-to-consumer health reports also have limitations and are generally not diagnostic.
If your question concerns an inherited condition or medical risk, speak with a healthcare professional about the appropriate testing.
Frequently Asked Questions About DNA Testing Myths and Facts
How accurate is a paternity DNA test?
Paternity testing can provide strong evidence about a biological father-child relationship. DDC states that its reports may show a probability of paternity of 99.99% or higher, or 0% when the tested man is excluded. Read the laboratory’s report rather than applying that percentage to sibling or ancestry tests.
Can I use an at-home paternity test for court?
A standard self-collected at-home paternity test does not meet the documented chain-of-custody requirements for legal testing. If you need results for an official purpose, arrange the appropriate legal test before collecting samples.
Are sibling DNA tests always conclusive?
No. Some sibling results are inconclusive. The laboratory may recommend testing additional relatives to obtain more informative evidence.
Does a paternity test reveal ancestry or medical conditions?
A standard paternity test evaluates a biological father-child relationship. Ancestry testing and medical genetic testing are separate services with different purposes and methods.medlineplus+1
How much does DNA testing cost?
Contact GameDay DNA for current pricing for your specific test. Confirm the number of participants, collection arrangements, shipping, applicable taxes, and any optional processing fees before purchasing.
Can New York clients order an at-home kit through GameDay DNA?
No. GameDay DNA offers legal testing only for New York clients. Contact our team to discuss the appropriate collection process and appointment availability.
Need Help Choosing a DNA Test?
Contact GameDay DNA to discuss the relationship you want to investigate, the participants available to test, and whether you need results for personal knowledge or a legal purpose.
Review our DNA collection locations, explore at-home kits where available, or call (302) 527-1789 to discuss your options.
Follow us on Instagram and Twitter! If you have questions about paternity tests or other DNA testing services, please contact our Client Support Center at 302-529-1789, Mon-Sunday from 8:00 AM to 9:00 PM Eastern Time. Our friendly, expert representatives are ready and happy to help. Get answers anytime by visiting our Help Center.
