My understanding of the Monoclonal Antibody Infusion treatments is that they work best when done within 10 days, but I don't know for sure whether that is within 10 days of first symptoms or within 10 days of determination of being positive for Covid.
Wife and I did ours within 10 days of first symptoms (a cough.)
Wife and I did ours within 10 days of first symptoms (a cough.)