What age for child to be test for DNA?

There is no specific age requirement for DNA testing in children; testing can be conducted at any age, including at birth. The decision to test often depends on the purpose of the test, such as paternity, medical reasons, or genetic conditions. Parents or guardians typically need to provide consent for testing, especially for minors. It's essential to consult with a healthcare professional or genetic counselor to understand the implications and appropriateness of testing for a child.