can comtrex day and night flu therapy affect urine drug tests?

Answer:
The September, 1986 issue of HIGH TIMES magazine contained an
article that listed a few of the over the counter (and prescribed)
drugs that 'cross-react' (cause false positives) when users of these
'legal' drugs are tested using the EMIT Cannabinoid Assay method. This
method (I don't know the details of how it works) is used by both the
companies who are manufacturing urinalysis testing devices.
The drugs mentioned are:
Advil
Nuprin
Motrin
& Naprosyn

OPIATES:
Nyquil
Dorcol Childrens cough syrup
Comtrex
Pedia-care
Benylin
[anything containing dextromethorphan]
AMPHETAMINES:
Alka-Seltzer Plus
Quadrahist Pediatric Syrup
Dexatrim
Dietac
[anything with phenylpropanolamine]
(also anything with ephedrine):
Primatine
Quadrinal
Tedral
Bronkotabs
Contac

so yes it can effect a urine test .
Other Answer:
yes

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