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.
Continental Airlines has a daily non-stop flights from Newark Liberty Int'l airport (EWR) to Barcelona (BCN) with a flight time of 8h 05min. (New York / JFK-Barcelona / BCN) Delta flight DL94 departs JFK at 1735 and arrives in BCN at 07:35 after a 8 hour flight.