Contact +32 16 34 70 00 laboratoriumgeneeskunde@uzleuven.be Contact form Address UZ Leuven gasthuisberg campusLaboratory medicineHerestraat 493000 LeuvenGetting there and services Location and accessibility Parking The designated car park for this department is parking Oost. Porphyria testing PDF Test catalog - national reference laboratory for porphyria testing PDF - 9.73 Kb News and events New trial shows high viral load in exhaled air the first two days after SARS-CoV-2-infection 21 December 2021 KU Leuven, UZ Leuven and imec researchers warn that someone can be as infectious in the first two days after the infection took place as in the time after that. In addition, half of all antigen tests in that early stage resulted in false negatives. Last edit: 24 november 2025