Paternal Lineage (Y-STR) DNA Test

The Paternal Lineage (Y-STR) DNA Test is designed to trace and compare direct paternal ancestry through the male line. This test analyzes specific markers on the Y chromosome, which is passed virtually unchanged from father to son, making it ideal for confirming whether two men share the same paternal lineage.

Common uses include verifying paternal family connections, exploring surname relationships, and confirming male-line ancestry when traditional paternity testing is not appropriate.

When Should You Use a Y-STR DNA Test?

This test is commonly used when:

• You want to determine whether two males share a common paternal ancestor

• A direct paternity test is not suitable or available

• Surname or paternal family lineage verification is needed

• Genealogical or ancestry-focused results are preferred

Who Can Be Tested

• Two or more male participants from the same potential paternal line

• All tested individuals must be biologically male, as the Y chromosome is required

Accurate Y-STR DNA Analysis

DNA samples are analyzed at an accredited laboratory using advanced Y-chromosome STR analysis. The test examines multiple Y-STR markers to compare paternal haplotypes and determine whether the tested individuals share a common male-line ancestor.

Turnaround Time

Results are typically available within 5-7 business days after the laboratory receives all samples.

Simple and Confidential Testing

Sample collection is quick and non-invasive using cheek swabs. All testing kits are shipped in plain, unmarked packaging, and results are delivered securely to protect your privacy.

Important Information

• This test traces paternal lineage only and does not determine legal paternity

• All participants must be biologically male

• Split kit shipping options may be available if participants are in different locations