DNA Testing News, Guides & Resources
Explore the latest DNA testing information, educational guides, and helpful resources from Validity Genetics.
Our articles cover Paternity DNA Testing, Relationship DNA Testing, Infidelity DNA Testing, Forensic DNA Testing, and Legal DNA Testing. Whether you're learning how DNA testing works, comparing testing options, understanding your results, or preparing DNA samples for laboratory analysis, our goal is to provide clear, accurate, and easy-to-understand information.
Browse our articles below to learn more about DNA testing and find answers to your questions.
Can DNA Be Tested From Fingernail Clippings?
Can fingernail clippings be used for DNA testing? In some cases they can. Learn how DNA can remain on or under fingernails, how laboratories analyze these samples, and what factors affect successful testing.
Can DNA Be Tested From a Toothbrush?
Did you know a toothbrush can sometimes be used for DNA testing? Saliva left on the bristles may contain enough DNA for analysis. Learn how toothbrush DNA testing works and what factors influence whether testing is successful.
DNA Testing Without the Father: What Are Your Options?
Figuring out paternity without the father is possible with alternative DNA tests. Grandparent, sibling, avuncular, and forensic DNA testing can provide reliable answers when direct testing isn't an option. Learn about how these tests work, their accuracy, and the best way to move forward with DNA testing.
Can You Use Discreet DNA Samples for Relationship Testing?
Can you use hair, toothbrushes, or personal items for a paternity or sibling DNA test? Learn about discreet DNA samples, how they compare to standard cheek swabs, and the best practices for forensic DNA testing. Get accurate and confidential results with Validity Genetics. Find out more today!
Sibling DNA Testing: How It Works and What to Expect
A sibling DNA test determines whether two people share one or both parents. Learn how full vs. half-sibling tests work, what results mean, and how to improve accuracy. Find out why people take sibling DNA tests for legal, immigration, or personal reasons, and get answers in 2-3 business days with fast, reliable testing.
How Long Do DNA samples Last?
How long does DNA last? Learn how long different DNA samples remain viable, what causes DNA degradation, and how to properly store DNA evidence for testing. DNA longevity affects paternity, sibling, grandparent, and infidelity DNA testing. Learn how long DNA lasts in buccal swabs, forensic samples, and infidelity samples, and how storage conditions impact accuracy. Discover the best ways to preserve DNA for testing and what factors cause degradation. Get expert insights on ensuring reliable DNA test results for any type of sample.
How Much DNA Do You Share with Your Relatives?
Ever wondered how DNA can reveal family connections like siblings, grandparents, or even distant cousins? Understanding shared DNA percentages offers surprising insights! Whether it’s a paternity test or exploring ties with an aunt or grandparent, we break down how shared DNA can uncover the real story behind each relationship, and why some results overlap more than you’d think.
Home vs. Legal DNA Testing: What's the Difference?
What's the difference between home and legal DNA testing? Learn when to choose an informational or court-admissible DNA test, how chain of custody works, and what to expect from sample collection, pricing, and results.
Common Types of DNA Samples
What types of samples can be used for DNA testing? Learn about cheek swabs, toothbrushes, hair with roots, clothing, dried stains, and other forensic DNA samples, including how sample quality and collection affect testing.