Given the sensitivity and prognostic value of the serum free light chain ratio for light chain multiple myeloma, do you continue to check urine studies?  

This is a very pertinent and timely question. In fact, there is finally data. Dr. Dejoie et al published in Blood a study comparing the performance of serum and urine measurements in 113 newly diagnosed light chain myeloma patients. Interestingly only 64% of these patients had a measurable urine pr...