Guardiola's press conference ahead on Friday ahead of City's clash this weekend was cancelled as a precaution while he waits for the result of his PCR test.
He attended a press conference in Barcelona where former City striker Sergio Aguero emotionally announced his retirement from football.
City's clash this weekend, which is against Newcastle on Sunday at 2pm, is set to go ahead.
However, Guardiola won't be in attendance if he tests positive, and he would also miss their Boxing Day game at Leicester.
Guardiola, who lost his mother to the virus last year, was last seen in public on Wednesday with Aguero.
The 50-year-old was wearing a mask for the main presentation and has been quite vocal on the need for, not only his players, but society in general to maintain high levels of caution.
"I'm concerned - not because we are going to cancel or break the league but because in society the virus is here and people suffer," he said earlier this week.
"Some people, staff here, have got it right now and we've spoken with the players almost every day and told them to be careful - stay safe, stay healthy, (wear) masks, social distance."
City head into the weekend's decimated round of fixtures with a one-point lead at the top of the table.
Joao Cancelo will be available again after suspension and fellow full-back Kyle Walker will hope to return after missing the 7-0 win over Leeds on Monday due to reported illness.