The x-rays and 24 hour urine collection are probably to look for and make sure that your husband does not have multiple myeloma. This affects bones and they take a lot of x-rays (skeletal survey) to look for lytic (low density lesions). With myeloma, the abnormal cells often make an immunoglobulin or part of one. It is important to make sure that neuropathy is not associated with multiple myeloma because the treatment would be different. I had a skeletal survey and had the 24 hour urine test to make sure that my neuropathy was not due to this. They also do a blood test, I think it is called a SPEP–the S is serum, and end EP is electrophoresis but I cannot remember what the middle P stands for…..
Are you by any chance seeing Dr Levin? He is the person I saw at Cleveland Clinic for a second opinion and he was really thorough. He did not talk to me much, though, afterward, so have your questions ready to ask him…
I hope all goes well and you get answers.
WithHope for a cure of these diseases.