Elon Musk claims he tested negative and positive for the coronavirus on the same day.
In a tweet, the SpaceX and Tesla boss said he had taken four 'rapid antigen tests' and two gave a negative result and two came back positive.
He went on to say: "If it's happening to me, it's happening to others. I'm getting PCR tests from separate labs. Results will take about 24 hours."
In his replies, Musk said he was experiencing 'symptoms of a typical cold'.
The billionaire has already ruled out he and his family getting a coronavirus vaccine, should one become available, telling the New York Times podcast Sway he didn't think the virus was a risk to them.
When asked if he or his family would be getting the jab, he said: "No, I'm not at risk for Covid. Nor are my kids."
Musk has previously been accused of spreading false information about the virus.
