A.    Normal white blood cell (WBC are between 4.5-10×10 [3] UL.)
Normal hemoglobin (HBG is between 12-16 gm/dl.)
Normal platelets (usually between 120 to 500×10[3] UL)
Determining if any of the above are high or low is one of the most common reasons to perform a bone marrow biopsy.

Additionally, primary cancers of the bone marrow such as leukaemia, myeloma and lymphoma or checking for cancers involving other sites such as metastatic disease may be another common reason to perform this test.