All of the following are minor criteria for multiple myeloma except -
Final Diagnosis -- Nonsecretory multiple myeloma. Diagnostic requirements: The diagnosis of multiple myeloma requires a minimum of one major criterion and one minor criterion, or three minor criteria which must include bone marrow plasmacytosis of 10-30 percent and the presence of a monoclonal protein. Ref Davidson 23rd edition pg 789
Plasmacytosis 20%
Multiple lytic lesion
IgA < 100 mg/dl and IgG < 600 mg/dl
Plasmacytoma on tissue biopsy
Haematology