I have been doing a bit of research on false positive's for PCP caused by Ketamine. I have read a lot of information on various sites but none of the information has any definitive answers. I was wondering how likely this is to occur on a standard 5 panel or 10 panel test and how long Ketamine stays in your system. According to erowid it is 2-4 days however ive also heard 3-5 and in Ketamine Dreams and Realities it states that it is 7-14. If anyone has any information id appreciate any help thanks.