Anonymous hair drug testing does not require a registered sampler to confirm the identity of the tested person and limited documentation is involved. It is also important to note that non-legal results do not mention the donor’s name. This type of testing is recommended for personal use such as a parent testing a sample of their teenager’s hair. On the other hand, legal hair drug testing needs a doctor or professional sampler to collect the hair sample and confirm the tested person’s identity. The sampler is requested to clearly and completely fill out the chain of custody form provided. Legal testing is ideal for clients who need legally defensible results for reasons such as pre-employment or a court case.