Yours is the first I’ve read to mention being tested for antibodies after vaccination. Was that test ordered by your Dr because there was a concern you might not have made antibodies? Was that question about antibodies a concern because you were still on Prednisone? I guess the prednisone suppresses an inflammatory response so it may hinder the creation of antibodies?! I am still on 15-20mg and Considering getting the second Moderna shot. ( First shot in Jan triggered my initial PMR episode.)