Bataille R; Boccadoro M; Klein B; Durie B; Pileri A Multiple myeloma (MM ... The Durie & Salmon staging system and serum beta 2-microglobulin (beta 2M) are used worldwide because of their easy ...

Medically reviewed by Marla Anderson, MD Multiple myeloma is a rare type of blood cancer that starts in your plasma cells.

Stage 1 is the earliest stage of multiple myeloma. People with stage 1 have lower levels of beta-2-microglobulin (below 3.5 milligrams per liter) and higher albumin levels (3.5 grams per deciliter ...