I think you mean the parent of the child is not cooperating in letting the child leave a DNA test and in that case you have to go to court so they have to follow the court order.
no if your doing a DNA test and trying to see if he is the father u would have to send his child's DNA in because the child shares similar qualities with the father's DNA it is not exact same the other way around
A DNA test is used in situations when paternity is contested. That is if someone gets a lady pregnant and claims it is not his baby, the mother can insist on a DNA test for purposes of child support. If the mother is the biological mother of the child, the test will be stupid since she had the baby to begin with
Generically, the only way to stop someone from doing something lawful is with a court order. If you are attempting to prevent this person from learning who the child's father/brother/relative is, it may be difficult.
if someone had taken a DNA test when a child was about 6 months old only to find out that he was the Dad 4 years later. Is this possible or should he get another DNA test done?
It depends on the court and the jurisdiction. You can be fined or jailed for the contempt, and the court can order someone else to take the child for the test.
You will definitely need to consult a lawyer concerning this issue.
blood or dna test. Blood Test.
If you don't trust the mother a DNA test is the only way I guess. The child can also look like you.
If no paternity test was ever done can someone have the court order a DNA test?
It depends on if it's a court ordered DNA test or if it's just someone telling you that you have to. If it's just someone that you might be related to or if you might have fathered their child then no you don't HAVE to. If you get a warrant from a lawyer that's signed by a judge saying you have to, then yes, you do.
Get a DNA test.
can be done prenatal.