I am not sure who had the intial question about bone marrow biopsy. I had disabling trauma from my bone marrow biopsy and when I changed Drs. she said she would not have done it, that it was not needed for the diagnosis. They pounded a spike into me a couple times at the hospital. I had asked for it to be done on my right side because I have had a lot of lumbar issues and pain on my left side. They said whichever side was easier to get to, so they ended up doing my bad left side. I could not walk without sciatic pain for a year or more and it still can bother me when I walk. I went to many Drs. and no real answers. I did my own research and found out that especially for women it can cause periformis syndrome. I had a hip mri and it noted that where my periformis passed the sciatic nerve, with the inflammation it could cause something like that. I did see one sports medicine Dr. that did sonogram down that left side and saw little tears in many places. I was sorry I did it. Blood tests can often show leukemia now, at least some types. I wish I had waited in case it is needed if it progresses. I guess it depends what your blood readings say.