My opinion..

Really doctors who take care of the patients will know before any tests will be done...how the patients are doing..

Doctors see , if patients is breathing easer , blood oxygen reading better , patient is better..

Of course tests , x-rays , will confirm that , and it will be also a prove for FDA or anyone else ...

But attending physician know very , very soon when improvement will start ..that's what clinicians do , they know how to recognize the positive sign in the patients..

And sometimes when things not going well , they can recognize that too,
before tests are back , and react accordingly ...

And I hope improvement started for those 2 patients on Leronlimab...