For a DNA extraction from a hair sample it is best if the hair is freshly pulled out/ taken from the head and when the hair follicle is still intact; this will help get the best extraction results. The results from discreet samples (such as hair) depend very much on the condition of the sent sample. For example if hairs are sent, it is best if more than 5 hairs with root still intact are pulled out from the head and sent for testing (hair without a root or shed hair do not give good results).