Can hair samples be used for DNA paternity testing?
Yes. However hair samples must have the root follicle intact as only hair follicles have dividing cells that contain nucleus, rest of the hair is composed of "dead" cells that do not contain DNA. For the follicle to remain intact, it generally requires the hair to be pulled directly from the scalp.
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Hair samples Hair follicles DNA testing dead cells Back To DNA & Paternity FAQ