A drive through coronavirus testing centre is to open at Glasgow Airport within the next few days, the Express can reveal.The centre is currently under construction at the airport’s long-stay car park at Arran Avenue, Paisley.It is understood the centre will initially test NHS staff and their families.Those currently in isolation could return to the NHS front line should their test result prove negative.First Minister Nicola Sturgeon confirmed earlier today that so far 3,400 NHS workers or their family members had been tested for Covid-19.She said that this figure was expected to “rise considerably in the days to come” as capacity for testing increased.Currently around 1,900 coronavrius tests are carried out per day, but it is hoped the