What does bone marrow biopsy needle detect

The bone marrow puncture needle is to Pierce the bone marrow rich part of the bone, take out the needle core, connect the syringe (syringe) to suck the bone marrow fluid by negative pressure.

And bone marrow biopsy, then after bone marrow puncture further need to use biopsy needle hard forceps to bite off a part of bone marrow tissue, this is especially helpful for bone marrow puncture multiple "dry extraction", such as some diseases such as myelofibrosis, so you only bone marrow puncture, then often dry extraction, marrow fluid.

So a bone marrow biopsy is a further diagnostic tool