A sexual assault evidence collection kit, sexual assault forensic evidence (SAFE) kit, Sexual offense evidence collection (SOEC) kit or Physical Evidence Recovery Kit (PERK),What is a Rape Kit? Rape, Abuse & Incest National Network; 2009; Accessed October 13, 2010 is a set of items used by medical personnel for gathering and preserving physical evidence following an allegation of sexual assault which can be used in rape investigation.