Sergio Perez is currently awaiting a COVID-19 retest following an inconclusive result ahead of the British Grand Prix at Silverstone.
Racing Point driver Perez was due to be present for the FIA press conference on Thursday afternoon at Silverstone, but the team was only represented by Lance Stroll.
It was confirmed by the press conference MC that Perez was absent from the press conference as a result of an "inconclusive" test result for COVID-19, and that he was self-isolating while awaiting the result of a second test.
A spokesman for Racing Point said there was no further information beyond the FIA's comment.
"Checo is not at the circuit today following an inconclusive test result," he confirmed.
"He is self-isolating awaiting the results of a retest."
All paddock personnel are required to undergo a test for COVID-19 at least every five days, as set out by the FIA in its protocols for the grands prix this season.
Racing Point would be due to call on one of Mercedes' reserve drivers for the race weekend should Perez test positive for COVID-19, as part of an agreement with the team.
This would result in an F1 return for either Stoffel Vandoorne or Esteban Gutierrez, both of whom share the role as Mercedes' reserve.
Vandoorne made his most recent F1 start at the 2018 Abu Dhabi Grand Prix, racing for McLaren, while Gutierrez has not raced in F1 since 2016.
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