When questioned on Wednesday and on Thursday morning if the Premier would be, or had been, swabbed for COVID-19, her office told Brisbane Times on Thursday morning that she had not.
A spokesman for the Premier said she had strained her voice after a full sitting of Parliament last week and a number of engagements, but it was not a sore throat.
Treasurer Cameron Dick later confirmed she had been tested.
Ms Palaszczuk was tested for the virus on Wednesday night, but her staff were not informed until later on Thursday, after they had already spoken with Brisbane Times.
“The Premier lost her voice, I can advise you that she had a COVID test, that came back negative,” Mr Dick said.
“So she has done the right thing, she has listened to the health advice, she has obeyed the science and the science that informs the health advice and that is the appropriate thing for Queenslanders to do.”