Forensic Paternity DNA Testing

A Forensic Paternity DNA Test determines whether a man is the biological father of a child using DNA collected from personal items or other non-standard samples.

Unlike a traditional paternity test, which typically requires cheek swabs from both individuals, forensic paternity testing allows DNA to be extracted from items such as toothbrushes, hair with roots, or other personal belongings.

This option may be useful when a standard oral swab is unavailable, including situations involving deceased individuals or family members who cannot participate in conventional sample collection.

Our laboratory can attempt to recover DNA from a variety of personal items, including:

• Toothbrushes

• Hair with attached roots

• Used razors

• Fingernail clippings

• Certain clothing or personal items

• Other objects that may contain recoverable human DNA

Toothbrushes are often a preferred option because they may contain a relatively concentrated source of DNA from the person who used them.

The success of testing depends on the condition of the sample, the amount of DNA present, and whether DNA from other individuals is also present.

Yes. Forensic paternity testing may be possible without a traditional cheek swab from the alleged father.

Instead, you may submit a personal item believed to contain his DNA, such as a toothbrush or another suitable non-standard sample.

The laboratory will attempt to recover a usable DNA profile from the item and compare it against the child's DNA profile to evaluate the biological relationship.

However, successful testing depends on whether sufficient DNA can be recovered and whether the item contains DNA from the intended individual.

When a suitable, single-source DNA profile is recovered from a forensic sample, paternity testing can use the same established STR DNA analysis methods employed in traditional paternity testing.

Results may provide strong statistical evidence supporting or excluding a biological father-child relationship.

However, forensic samples can be more challenging than standard cheek swabs because they may contain degraded DNA, insufficient genetic material, or DNA from multiple contributors.

If the laboratory cannot recover a suitable DNA profile, the results may be inconclusive or more samples may be needed.

Yes. Forensic paternity DNA testing may be possible using a personal item previously used by the deceased individual, provided sufficient usable DNA can be recovered.

Items such as toothbrushes, razors, or preserved biological samples may be suitable for testing.

If a reliable DNA profile cannot be obtained, alternative relationship testing involving biological relatives may be an option.

Our Relationship DNA Testing services include additional testing options for family relationships.

Our standard Forensic Paternity DNA Test is intended for personal knowledge and informational purposes.

Because personal items are generally collected without verified identity and documented legal chain-of-custody procedures, these results may not meet court requirements.

If you need DNA results for child support, custody, inheritance, or another legal matter, a Legal Paternity DNA Test may be more appropriate.

If you are considering forensic testing for a legal matter involving an unavailable or deceased individual, consult your attorney before submitting samples.

Handle the item as little as possible to reduce the risk of contamination.

When possible, wear clean disposable gloves and avoid touching areas likely to contain DNA.

Allow damp items to air-dry completely before packaging. Place each item separately in a clean paper envelope or bag, clearly labeled with the sample description.

Do not wash the item, expose it to excessive heat, or package damp samples in sealed plastic.

We recommend contacting Validity Genetics before submitting unusual or irreplaceable items to confirm the appropriate handling instructions.

Standard Forensic Paternity DNA Test results are generally available within 5-7 business days after the laboratory receives the samples and they are placed into testing.

Some non-standard samples may require additional processing time, particularly when DNA is degraded, present in small quantities, or difficult to extract.

Results are delivered confidentially by email in PDF format.

If you are unsure which sample to submit or whether forensic paternity testing is appropriate for your situation, contact Validity Genetics for assistance.

If a direct paternity test isn't possible because the alleged father's DNA is unavailable, Validity Genetics offers several alternative Forensic Relationship DNA Tests that can help establish biological family relationships using DNA from personal items or other non-standard samples.

Depending on which family members are available, your options may include:

• Forensic Sibling DNA Testing – Determines the likelihood that two individuals share one or both biological parents.

• Forensic Avuncular DNA Testing – Evaluates the biological relationship between an aunt or uncle and a potential niece or nephew.

• Forensic Grandparent DNA Testing – Evaluates the biological relationship between a grandparent and a potential grandchild.

These tests can be useful when a parent or other relative is deceased, unavailable, or unable to provide a traditional cheek swab.

The best testing option depends on the biological relationships being evaluated, which relatives can participate, and the quality of the DNA samples available. Alternative relationship tests may provide less conclusive results than direct paternity testing.