... for One Step MOR Test was tested by adding various drugs, drug metabolites, and other compounds that are likely to be ... morphine300Hydrocodone375Hydromorphone400Merperidine30,000Morphine-3-glucuronide490Norcodeine30,000Oxycodone15,000Thebaine30,000The following compounds were found not to cross-react when tested at concentrations up to ...