What Is a Bone Marrow Biopsy Done With?

The clinician usually numbs the skin and tissues over the back of the pelvic bone. The needle enters the bone to draw a liquid aspirate, followed by a trephine sample containing a narrow cylinder of marrow and bone. These samples show how blood-forming cells are arranged and developed.

The laboratory may use microscopy, cell-surface testing, chromosome analysis, or flow cytometry. Flow cytometry sorts cells by their physical and protein features, helping specialists compare abnormal cells with normal blood-forming cells.

Give the team a complete list of medicines, especially anticoagulants and medicines that affect platelets. Mention bleeding problems, allergies, pregnancy, and previous difficulty with local anaesthetic. Wear comfortable clothing, ask about sedation, and arrange a ride if you will not be fully alert afterward. Keep the dressing clean and follow the stated activity advice.

Call the care team for persistent bleeding, increasing warmth or swelling, drainage, fever, or pain that becomes stronger after the initial soreness. Get urgent medical help for fainting that does not resolve, severe weakness, chest pain, or breathing difficulty.

Will you take both an aspirate and a trephine core? Where will the sample be tested? Is flow cytometry planned? Which medicines should I adjust, and when will results be discussed?