DO NOT USE - I purchased the Fit to Fly test to return to canada (thank god I last minute also purchased a kit from eurofin!). I took them both on the same day, sent them both off on the same day in the same postbox - guess who i've not even had 'acknowledgment the kit has arrived at the labs', from? Dante Labs of course! Thank god I had a second Fit to Fly from Eurofin Labs - they were amazing - DO NOT USE DANTE LABS. I would have missed £1k in flights...Eurofin gave me results 24hrs after I posted the test and were amazing with customer support. My flight goes tomorrow!