Fast test, fast money - Berlin's corona testing boom Private rapid test centres are making up to €25,000 turnover per day, but not sending results to health authorities. Politicians are demanding more regulation. Artikel anhören Photo: dpaCorona quick test centres are booming, like the one at KitkatClub. Berlin - The boom times are back! Back in the mid-19th century factories sprang up overnight across the city. This time around it's rapid corona test centres opening up in cafés, galleries, theatres, clubs, even in churches. Which is great if you need to get a quick test. But not everyone's happy. Berlin's public health officials and politicians speak of "uncontrolled growth" and are demanding tighter regulation. No city authority currently knows how many centres are actually out there. And they warn that monitoring by district authorities is impossible.