Screening and Therapeutic Monitoring of Multiple Myeloma by MALDI-TOF MS Analysis

This study is evaluating a lab test called MALDI-TOF MS to see if it can detect and monitor multiple myeloma (a type of blood cancer) using blood samples — potentially offering a faster and easier way to track the disease compared to current methods. **You may be eligible if...** - You have been diagnosed with multiple myeloma and have had blood samples collected for standard diagnostic testing - OR you are a healthy adult with no major chronic diseases (for the control group), matched by age and sex to a myeloma patient **You may NOT be eligible if...** - Your sample information is incomplete or cannot be traced - Your blood sample is insufficient for testing - Your sample was not collected or stored according to required guidelines This is primarily a laboratory analysis study using existing blood samples. Talk to your doctor to see if this trial is right for you.