Yes, you may send a variety of samples for testing besides mouth swabs. GTL can test hair samples, used Kleenexes, blood stains and many other such samples. We call these samples forensic samples and you can view a list of the most common samples sent for testing by clicking here. However, we strongly suggest that you first contact our customer support team for an evaluation of the viability of the sample you plan using. We may also need to give you some information about collecting, storing and shipping the specific sample type.