noun
paternity test
A formal or medical term for a test to determine biological fatherhood.
裁判所が実父確定検査を命じた。
The court ordered a paternity test.
DNA鑑定 is a broader term for DNA testing, while 実父確定検査 specifically refers to paternity testing.
Compound of 実父 (biological father) + 確定 (determination) + 検査 (test).