What is a Sexual Assault Kit or Rape Kit?
A rape kit is a package of materials used to collect samples (evidence) from the victim's or suspect's body by a medical professional, often a medical-forensic examiner, such as a Sexual Assault Nurse Examiner (SANE). The type of evidence collected depends on what occurred during the assault. The contents of a rape kit vary by jurisdiction, but generally include swabs and collection envelopes for biological materials, debris, and underwear.
Source: National Best Practices for Sexual Assault Kits: A Multidisciplinary Approach