The results of examination of 58 patients in the course of multiple myeloma (MM) are discussed. Prognosis for LDH, beta2-m and FNO-alpha administration was evaluated versus immunochemical pattern, tumor mass and response to different chemotherapeutic regimens. High prognostic value of serum levels of LDH, beta2 and FNO-alpha in MM patients was observed. The method may be useful in carrying out chemotherapy and detecting recurrences and chemoresistance.