This is a Sources Sought (SS) for a requirement to procure and implement a Positive Patient Identification System (PPID). The requirement is for all Pathology & Laboratory Medicine Service (P&LMS) loc... This is a Sources Sought (SS) for a requirement to procure and implement a Positive Patient Identification System (PPID). The requirement is for all Pathology & Laboratory Medicine Service (P&LMS) locations in Veterans Integrated Service Network (VISN) 08.