2 doctors agreed: No: I know of no research that shows xenical can cause a false-positive drug test. All xenical does is block some of the fat from your diet from being absorbed, thus decreasing your calorie intake. This shouldn't cause either a urine or a blood drug test to become positive.
The total flight duration from New York, NY to Dominican Republic is 3 hours, 31 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing.
The average flight time between the cities of Boston and Prague is  8 hours and 19 minutes. The estimated distance between these  locations is 3,906 miles.Edit.ow long is the flight from New York to Paris? 6hr 50min to 7hr 40min New York Kennedy (JFK) to Paris (CDG) by  a nonstop flight operated by XL Airways France, Air France or Delta  Air Lines.