What is Avuncular DNA test?
Avuncular DNA testing determines biological relationships between aunts or uncles and their nieces or nephews. The laboratory analyzes up to 24 genetic markers to identify the approximately 25% shared DNA between these relatives, compared to siblings who share 50%.
The mother’s participation strengthens test accuracy. Families choose avuncular testing when the father, grandparents, or siblings remain unavailable for direct paternity testing.
Additional Note: The tested mother’s DNA helps isolate and identify the paternal genetic markers during the comprehensive DNA analysis.
DNA Testing Options:
Home Testing Kit:
Pricing Starts at $299.99
At Home Avuncular Testing option is for peace of mind purposes only. Results cannot be used for legal purposes. Below are the contents of DNA test kit:
- 4-6 sterilized buccal swabs (2 swabs per person)
- Sample collection instructions
- Contact identification form
- Prepaid overnight FedEx return shipping
How The Process Works:
- Starting a peace of mind test is simple. Follow this outline for our At-Home DNA paternal Grandparent Testing process:
- Order your DNA kit by contacting our office at 888-204-0583 to purchase by phone, or click here to buy online.
- Allow up to 24 hours or one business day for your test kit to ship to your home after purchase.
- Upon receiving your kit, follow the instructions to collect your DNA samples. Sign the chain-of-custody form.
- Place all contents in the prepaid return envelope provided and ship your genetic samples back to the lab for analysis.
- Once the lab receives your genetic samples, allow 2 to 3 business days for your results to be completed.
- After completion, a copy of your results will be sent to your physical home address and by email.
Legal DNA Grandparent Test
Legal Avuncular tests can be used for any legal purpose. All DNA samples are performed by our partner AABB accredited lab. Pricing for legal avuncular testing starts at $499.99.
Below are common applications to perform legal DNA test.
- Immigration cases
- Estate Cases
- Peace of Mind
Scheduling an Avuncular Test appointment
Scheduling an appointment is simple, call 888-204-0583 and allow one of DNA consultants to schedule near your city today.
DNA Testing Services By State
What method of DNA sample collection will be performed?
The standard method used to perform a DNA sample collection is cheek swab. Blood samples are via testing option with the accuracy as buccal swabs.
Alternative DNA samples:
- Hair follicles
- Toothbrush
- Earwax
- Dried blood on a tissue/napkin
Please note, forensic samples listed above cannot be used for legal purposes.
Results Turnaround Times
The average turnaround time is 2 to 3 business days from the date all samples arrive at the laboratory.
Privacy
Please note that the IDTO DNA Testing Center’s partner laboratory does not share any personal or genetic information with third-party companies.
All information provided to our partner laboratory is kept secure and will only be released to third parties with the explicit consent of the participants involved or by court order. DNA samples on file are kept for 3 months on average and then destroyed.
Frequently Asked Questions
What is the accuracy of an Avuncular DNA test?
Avuncular DNA tests determine the likelihood of a biological relationship between an individual aunt or uncle with a niece or nephew. The accuracy of this test can be very high, often exceeding 99% when a close biological relationship exists.
How much DNA do uncles and nephews share?
Uncles and nephews typically share approximately 25% of their DNA (on average). However, the actual percentage can vary due to random genetic inheritance patterns and can range roughly from 15% to 35%
Here’s an example:
- A person inherits 50% of their DNA from each parent
- Siblings (the uncle and the nephew’s parent) share about 50% of their DNA
- The nephew then receives half of their parent’s DNA
- Therefore: 50% × 50% = 25% average shared DNA between uncle and nephew
How to read an Avuncular DNA test?
To understand avuncular DNA test results you will receive. Below is an example of what you will receive from your result:
Key Points:
- Probability of Relatedness:
- The test shows a 99.9% chance that the two people tested are related as uncle and nephew. This means there’s a very high likelihood they are biologically related.
- Comparison to Unrelated Individuals:
- The test compares their DNA to that of a random person from the population who isn’t related to see how likely it is that they share DNA by chance. The starting assumption is a 50% chance of being related or not.
- Positive Predictive Value (PPV):
- This tells us how accurate the test is when it says two people are related. For this test, it’s more than 99% accurate if it shows they are related.
- Negative Predictive Value (NPV):
- This tells us how accurate the test is when it says two people are not related. It would be more than 99% accurate if the test had shown they were not related.
Conclusion:
The results indicate that it’s almost certain these two people are related as uncle and nephew, thanks to the very high probability and accuracy rates of the test.