>>81666699Sample Collection:
Buccal swab (cheek swab) is most common.
Blood, hair roots, or other tissue may also be used.
Samples are taken from:
The child
The alleged father
(Optional) The mother, for higher accuracy
But there is a problem in a corrupt society like ours. The mother or someone else may pay the lab that will test the DNA, so even if the dude is not the father, he might end being the father.