The new testing site at Brooms Road car park in Dumfries is the UK Government’s 25th walk-through centre in Scotland.
It joins a network of six drive-through sites and around 20 mobile units across Scotland, plus the Glasgow Lighthouse Lab which to date has processed more than five million tests.
Mr Jack, who is also Scottish Secretary, thanked frontline testing staff and learned more about a UK-wide drive to improve accessibility of testing for local communities.
He said: “Testing will continue to play an important role in how we manage the virus alongside the roll out of vaccines.
“This new walk-through site in the centre of Dumfries will make it easier for people in Dumfries and Galloway to access a test.
“I was very pleased to see for myself how testing is being rolled out across Scotland, and to thank the frontline staff who have been working tirelessly since the summer to provide this vital service.”
Tests should only be booked by people experiencing coronavirus symptoms and and must done in advance by visiting www.nhsinform.scot/test-and-protect or by calling 0800 028 2816.
Last week South Scotland list MSP Emma Harper lodged a written question to the Cabinet Secretary for Health, Jeanne Freeman MSP, requesting a walk-through testing site for Stranraer.