TheraSkin is composed of a split thickness skin graft harvested within 24 hours post-mortem, from an organ donor who has cleared the standard safety screenings. It is classified by the FDA as a donated tissue. Once harvested, the graft is sanitized according to FDA specifications, and cryopreserved, until it is delivered to the clinic for application to the foot ulcer. It is also a widely used treatment for diabetic foot ulcers.