YSTR Male Lineage Testing
The Y-STR male lineage test is used to determine whether two or more males are related through their paternal lineage. The Y chromosome is passed from father to son and has a relatively infrequent mutation rate, thus it remains the same through many generations.
This test focuses on the Y chromosome and results in a unique Y-STR profile for each male tested. It is important to note that this test will not differentiate men that are in the same paternal lineage.
For example, if a male child "A" and his alleged half brother Child "B" (Child "B" having a different mother than Child "A") want to know if they have the same biological father, and they have the same Y-STR profile, it is practically proven that they share the same father. If the profiles do not match, then they do not share the same biological father.
This is just one of many circumstances in which the Y-STR test can be applied. Review the chart to the right as a guide. Give us a call toll free at 1.07 3387 0177 and speak with one of our very knowledgeable case workers for more information.

Step 1: Review shipping information
Please review the following important information:
All DNA testing kits are sent complimentary by Express Post. The kits are sent discreetly and there is no mention of "DNA test" kit on the outside of the express post envelope. There is nothing on our return address or packages to indicate the nature of the product inside!
For home DNA test kit orders within Australia:
All kits sent by express post are normally received in only 2 working days.
If you would like your order sent by a courier service, please email us or call one of our Customer Service Advisors for further details on 07 3387 0177.
For home DNA kit orders outside Australia:
GTL Australia is an international company and our partners have administration offices in over 18 countries. We have the ability to send testing kits abroad with ease depending on the type of test required.
Kits can be sent by express mail or a courier service and we will advise the additional costs for you.
If you would like a DNA kit sent internationally, please email us or call one of our Customer Service Advisors for a quote on 07 3387 0177.
When home DNA test kits are shipped:
All orders received by 4pm, Monday to Friday will be dispatched the same day. GTL Australia do not dispatch or receive DNA kits at weekends or on public holidays.

Step 2: Select a DNA test
Release Options
- Standard testing
Results in 5 - 7 working days (Free of charge)
- Express testing
Results in 3 working days
(AUD $195)

Review additional information
• Information concerning how samples are taken, the difference between legal and at home testing and more is available for you to read.
Our Refund Policy
Samples must be submitted within 3 months of case initiation or the case will be closed. Refunds will be issued only if applied for within 15 days of the order date. Refunds for orders involving test kits only will not be issued. Full details on our refund policy can be found here.










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