What are light chains, how are light chains reported, and why?

What are light chains, how are light chains reported, and why?
What is urine protein electrophoresis (UPEP) and is it still used?
What tests are done on a 24-hour urine sample? Why are they still necessary?
What is a serum protein electrophoresis (SPEP)?
What does the quantitative immunoglobulin test measure?
What is immunofixation? (IFE)
BETA - What is a myeloma specialist, why do I need one, and how do I find one?
BETA - What are genetic sub groups in myeloma base? What testing is done to identify sub-group?
What are genetic sub groups in myeloma base? What testing is done to identify sub-group?
BETA - What is p53?
BETA - Why is it important for a patient to know the genetics of their myeloma? How is risk determine in myeloma?
BETA - What are late term side effects? Are late term side effects the same as long term side effects?
BETA - Should I share my survivorship care plan with others?
BETA - How often should I review my survivorship care plan?
BETA - What is included in a survivorship care plan (SCP)?