This study aims to utilize a highly sensitive method for detecting M protein in serum to examine the prevalence of M protein in various age groups of individuals aged over 30 who underwent physical examinations in different regions of China. Furthermore, the study seeks to analyze the relationship between physical examination indicators and the presence of serum M protein (as measured by relative intensity) in the study participants at the time of enrollment. Additionally, a 5-year follow-up period will be employed to observe the association between annual physical examination indicators and clinical outcomes in subjects identified with positive/negative serum M protein screening.
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Positive rate of serum M protein
Timeframe: 1 year