4 doctors weighed in:

Will Zanaflex (tizanidine) cause you to fail a urine drug test?

4 doctors weighed in
Dr. Chan Hwang
Physical & Rehabilitation Medicine
3 doctors agree

In brief: No.

Urine drug testing using modern gas chromatography and mass spectroscopy for confirmatory chemical analysis will not mistake tizanidine (zanaflex) for another substance.

In brief: No.

Urine drug testing using modern gas chromatography and mass spectroscopy for confirmatory chemical analysis will not mistake tizanidine (zanaflex) for another substance.
Dr. Chan Hwang
Dr. Chan Hwang
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