Legal Trio Test: It is used to determine paternity with greater accuracy by including the mother’s DNA in the analysis. This genetic test that involves three people:

➡️ the child,

➡️ the alleged father, and

➡️ the mother.

How a TRIO DNA Test Works:

1. DNA Sample Collection:
   
• All three individuals (child, alleged father, and mother) provide samples—typically via painless cheek swabs.
2. DNA Analysis:
   
• The child’s DNA is compared to both the mother’s and the alleged father’s.
• Since the child inherits half of their DNA from each parent, the lab first confirms which genes came from the mother.
• The remaining genes must then match the alleged father for him to be confirmed as the biological father.
3. Results:
   
• If the alleged father shares the expected genetic markers, the result is typically 99.99% or higher—meaning he is the father.
• If he does not match the required markers, the result will be 0%—he is not the father.

Why Include the Mother?

Including the mother:

• Helps eliminate any doubt about which DNA markers the child inherited from her.
• Makes the analysis clearer and more definitive, especially in cases with:
  
• Close relatives involved
• Unusual genetic mutations
• Court-admissible/legal testing

When Is a TRIO DNA Test Used?

• Court orders (child support, custody)
• Immigration cases
• Personal confirmation
• Adoption and birth record verification