Originally Posted by Comenius

So I'm trying to submit my UK PLF in Verifly for the first leg of my way back to the US with a landside overnight layover at LHR. There's a field for "Arrival Test Reference Number" that must be filled out before I submit the form in the Verifly app.

What do I put in that field? The name of the local clinic that performed my test? Something else? My negative test results were accepted in the Verifly app but it doesn't obviously list a reference number, so I'm clueless what Verifly wants me to put in that box.

Anyone figured this out?