(+1) 647 931 2711An X chromosome test and a Y chromosome test (sometimes called a X test and a Y test) are types of sibling DNA tests used when individuals want to establish if they have a common biological parent. Which one of these tests you carry out depends on the sex of the test participants and what you wish to find out.
If siblings are male, and want to determine if they share the same father, we recommend doing a Y chromosome test.
To know more about this test, visit our Y chromosome testing page.
If siblings are female, have different mothers, and want find out if they have same father then they can do an X chromosome test. For further information on this test, visit our X chromosome testing page.
