Levamisol is a veterinary use medicine that has been recently mixed with cocaine to increase the drug amount with commercialization aims, and to increase the drug effects. In Panama, this combination has been detected in corpse biological fluids, thus the present study tried to establish a methodology for the detection of levamisol in corpses in advanced state of decomposition. The study was realized in Panama City Judicial Morgue, with fragments of human corpse livers inoculated with levamisol, in which larvae were collected, and then processed and analyzed through toxicological techniques directed to the detection of this substance.