somebody has lyme's disease and takes the following drugs:
clonozepam
lamicital
tramadol
cyclobenxapr
doxycycl
lamotrigine
prednisone
acyclorir
hydrocodone/apap
benadryl/maalox/xylocaine

This person has recently had a drug test and came up positive for PCP.

Is it possible that the pcp screening is a false positive?