“Monoclonal gammopathy results from clonal proliferation of plasma cells or antibody secreting B-cells, producing large amounts of homogenous immunoglobulin or light chain fragments. An “acute” or transitory monoclonal spike has been reported in association with a spectrum of acute and chronic inflammatory illnesses, including viral infections.“
https://www.htct.com.br/en-acute-monoclonal-gammopathy-in-severe-articulo
S253113792030064X

* This pertains to an M spike found in 2 older patients who actually had a severe Covid infection.

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