.. you do realize a paternity test can happen with just a cotton swab? And aside from that, they already get a heel prick / blood spot test to check for a bunch

.. you do realize a paternity test can happen with just a cotton swab? And aside from that, they already get a heel prick / blood spot test to check for a bunch of things. Drawing a tiny bit of extra blood from that in no way presents any extra danger to the baby.