Lufthansa’s Austrian Airlines is offering rapid pre-boarding coronavirus tests free to passengers on one of its routes as part of a group-wide plan to make such tests standard, the company said on Friday.

The antibody tests, which provide results within 15 minutes, will be offered to passengers on a voluntary basis before they board flights to Berlin from Vienna airport from Friday, Austrian Airlines said.

“We must break down the borders that corona has built up in recent months,” chief operating officer Jens Ritter said in the statement, which acknowledged that for the time being these tests are no substitute for the standard PCR tests required by national authorities.

Austrian Airlines aims to roll out testing more widely if it becomes well established, it said, adding that the results from Vienna would inform Lufthansa’s general testing project.