THC was found in his system though the judge won’t allow it to be admissible in court.
http://www.businessinsider.com/trayvon-martins-marijuana-use-2013-7
Because L’il Debbie, after pre-trial hearings, disallowed the defence from using his drug report(autopsy).
On 7/05/13, Dr.dummie Rao in testimony referenced toxiccology reports he made and discussions he had with experts in that field. He testified that the victim could act diferently with MJ in his system, which he did.
Hence automatic grounds for an appeal if GZ is convicted of ANY crime! Per Judge Sheafer(WFTV-local) and a few other attorneys.