Listly by arapatriksson
A sibling DNA test can be helpful when a paternity test isn't possible.
As many as 1 out of 4 children have a different biological father than they think. A sibling DNA test can answer if you and your brother or sister have the same father. If not, you need to ask questions and find your father's family to get the answers you need.
Ancestry tests that tell you who you may be related to need to be verified. Over 50% of the time they are not correct. If you think you found a half brother or half sister., a DNA sibling test may be the best way to prove, or disprove, the relationship.
If the father isn't paying support for a child he claims isn't his, using a sibling DNA test kit *can show him the child he doesn't question is indeed the full sibling of the one he does. If he still doesn't want to pay, show the court the home test result and ask them to force him to take a *legal sibling test.
Sometimes you need to prove that a child is not the father's to have sole custody. At times like this you should not do a sibling DNA test at home, A legal sibling DNA test will be needed.
This is VERY common. The question can lead to sleepless nights and lots of stress. You can get a sibling DNA test kit and have your answers in less than a week. A small price to pay for peace of mind!
If the biological father did not leave things clean and easy in a will, many times one sibling will try to keep another sibling from their share. It happens! So at time like these you can use a sibling DNA test to determine paternity.
If you already have s sibling living in the USA, and the USCIS requires a DNA test to prove the relationship (and they very often do!), your can do a legal sibling test to prove to them you are family and eliminate one more issue.