Sure, well in a nutshell liquid biopsy is the new future in moving forward when it comes to doing the normal bone marrow biopsy. Rather than removing a sample from the back of the pelvic bone (usually), it's been some talk about having this procedure work with a simple blood test, rather than the prodding and pain that follows the typical way. Unfortunately the technicalities in the extraction and the goal of the result actually showing how far in your cancer diagnosis a patient can be and so forth makes the science of this happening sooner with a blood test way off, but they are working on it. Hope this sums it up : )
https://blood-cancer.com/diagnosis/bone-marrow-tests