Antibiotics Cause False Positives on Heroin Tests. Among the items reported as causing false positive test results are: Pain relievers such as Advil, Nuprin, Motrin and menstrual cramp medications like Midol and Trendar. All drugs containing the widely used pain reliever Ibuprofen are known to cause positive samples for Marijuana.
If you include this extra time on the tarmac, the average total elapsed time from gate to gate flying from Los Angeles, CA to Newark, NJ is 5 hours, 13 minutes.
From Manhattan, New York to Newark Liberty International Airport in  New Jersey is 18.4 miles. Driving time is 33 minutes, but can take  up to 46 minutes in traffic.