paternity test
To do a hair DNA test, the most important part of the hair are the roots and follicles, which both should still be attached to the strand. Fallen strands on the floor will not work, as well as those strands from a brush.
What you need to do is to pull a fresh hair strand from the head and make sure that all the follicles and roots are still attached. When you do submit hair samples, it would be best if you send more than just two just to be safe and to make sure that the DNA testing will not fail.
