DXM is the optical isomer of levamathorphan, a powerful opiate, what is strange to me is that it gives a false positive for PCP, dissassociatives, sure, but no structural relationship.
andruejaysin Reviewed by andruejaysin on . PCP false positive with DXM?!?!? Just saw this experience report on erowid http://www.erowid.org/experiences/exp.php?ID=2876 Wanted to know if anyone had any additional information on whether DXM will cause a fasle positive for PCP drug testing. Wasn't sure if this was more appropriate for this section or drug testing. Thanks. Rating: 5