Maternity test – Standard Duo examination

Standard maternity test: 24-marker Duo test

The DNA Center’s basic-level maternity test is based on 24 genetic markers, designed to determine the biological relationship between a child and the alleged mother. Known as a "Duo" test, it compares the DNA of two participants—the child and the alleged mother. This test is ideal for confirming biological maternity and provides reliable results.

How is the sample collected?

The maternity test is simple and convenient, requiring no laboratory visits and can be performed at home. The DNA Center sends specialized sample collection kits by mail. Sample collection is painless and typically involves taking a cheek swab from both the child and the alleged mother.

Sample collection process:

• Use the provided swab to gently rub the inside of the cheek (buccal mucosa), rotating the swab several times to collect cells.
• Place the swabs into the labeled sample envelope as per the included instructions.
• Return the samples, along with the completed data form and proof of payment, to the DNA Center via regular or priority mail to the address provided in the instructions. Alternatively, samples can be delivered in person to our office.

For more detailed instructions, visit: Sample Collection.

What does the sample collection kit include?

• Sampling tools for the number of participants in the test.
• One pre-labeled sample envelope per participant.
• A data form to be filled out, signed, and returned with the samples. This form should include details such as the type of test requested, participant information (name or alias, and optionally date of birth), the date of sample collection, and instructions on how and where the results should be sent (email or postal address). It should also include the payer's name and address for invoicing purposes.
• Detailed guidance on the process (instructions for sample collection and form completion, including the return address and payment information).
• A yellow postal check if postal payment is chosen.

What happens in the lab?

Once the laboratory receives the samples, the analysis of 24 genetic markers begins. These markers are specific DNA regions that clearly establish the biological relationship between the child and the alleged mother. Our experts meticulously analyze the samples to ensure accurate and reliable results.

Results and accuracy

Results are typically ready within 3–4 business days of the samples arriving at the laboratory and are sent via mail or email. The 24-marker maternity test provides precise results on whether the alleged mother is the child’s biological mother.

The test generally demonstrates a probability of 99.999% or higher when maternity cannot be excluded. If the test determines that the woman cannot be the biological mother, the probability of maternity is 0%, and the result will state that the alleged individual is excluded as the biological mother of the child.

The DNA Center's laboratory is equipped with state-of-the-art technology, and our experienced genetic experts ensure the accuracy and reliability of every test.

For more information about DNA test accuracy, visit: DNA Test Accuracy.