Understanding Siblingship Studies
Siblingship tests are among the numerous family relationship DNA tests that Beta Paternity expertly performs.
Siblings who know they have the same biological mother but are curious about whether they also have the same biological father can often find the answer they need through Beta Paternity’s in-home siblingship testing. (In this scenario, a full siblingship test would be performed.) Conversely, siblings who are certain that they do not have the same biological mother but are curious about whether they do have the same biological father may also benefit from a siblingship test. (In this case, a half siblingship test would be performed.)
Note: Siblings who know that they have—or do not have—the same biological father but are wondering if they have the same biological mother can similarly perform a full—or half—siblingship test, but these cases are far less common.
In addition, a siblingship test may be useful for siblings who were separated from one another at a young age—through adoption, for example—but are reunited years later. The test can be used to confirm their relatedness.
At minimum, a siblingship study requires the testing of the two alleged siblings. The DNA analysis required for this test is complex, so we strongly encourage the participation of any known biological parents whenever possible. The parents’ genetic samples will aid in the analysis. (A siblingship test provides a Combined Siblingship Index that expresses the genetic odds in favor of—or against—a siblingship relationship for the tested individuals.)
For more information about this service, please visit our Siblingship Testing page.
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Digg it
February 16th, 2008 at 2:01 am
Thank you for website - it is very informative.
If my sister and I have had DNA blood tests done in the lab without our deceased parents blood being available, how accurate is the test result that shows we are most likely to be half siblings? We share the same mother.
February 19th, 2008 at 9:53 pm
It is difficult to comment on the accuracy of a test without knowing the specifics of the case. If you have had a test with Beta Genetics, please call us for further explanation on your test. Thank you for your comment!