Bone Marrow Tests
Explanation
Bone marrow tests examine the soft tissue inside bones where blood cells are made. Aspiration collects liquid marrow, while biopsy collects a small piece of marrow and bone.
What is bone marrow?
Bone marrow is soft tissue inside bones. It makes red blood cells, white blood cells, and platelets, which help with oxygen transport, infection defence, and blood clotting.
How do aspiration and biopsy differ?
Bone marrow aspiration removes liquid marrow and cells through a needle. A bone marrow biopsy removes a small solid piece of marrow and bone. The procedures are often done together because the samples show different features.
Why are bone marrow tests ordered?
Testing may be considered when blood counts are abnormal or when doctors are investigating a blood or bone-marrow disorder or certain cancers. It may also help monitor treatment or check whether some cancers have reached the marrow.
Does one result give the diagnosis?
The samples can undergo several laboratory assessments, including examination of the cells and tissue. The findings are interpreted with blood tests and other information, and additional tests may be needed before a diagnosis or treatment choice is made.
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