the CDG test centers close at around 5 pm, so this is not an option for you. I don't think the test needs to be done in France. You can do it in UK as long as it complies with UAE requirements in term of sampling date & time. If you need to do it in Paris, you need to look for alternatives to CDG. At that time (> 6 pm); it will be tough to find a lab in town still taking samples. I know one lab in Neuilly sur seine who accepts patients until 8 pm. No appointment needed and they give results quickly (<24 hrs). It is located right at métro Les Sablons on line 1.
https://biogroup.fr/recherche-labora...aulle/1714042/