Its really rare to ask for any additional medical test. At least I have heard none from this forum. (Except if its for new born or so). It will appear soon insallah, but as we all can see things are not in a scenario someone can predict. Just few months back our forum mates got passport request within 2-3 months of medical tests done, and now many of us are waiting almost 4-6 months still hardly anyone got the PPR. Its very much unusual a situation.
As its a fact for everyone, so I think its better to wait, things are to change, it has to. And if it changes, it will bring quick result for all insallah in one go, (just recall when they started issuing the MR to MI-1 applicants, it was every week there were almost 7-8 persons updated). Just hope for the best, and meanwhile try to forget the whole chapter.
Cheers.