Diagnostic Peritoneal Lavage

Question: What is a positive DPL?
Answer: > 10cc blood on initial needle insertion; > 100,000 RBC if blunt or > 5,000 RBC if penetrating after infusion of 1 liter normal saline; bile or stool; WBC > 500; (NOTE - atleast 250 cc must be aspirated back to get an adequate DPL)