A test in which a piece of bone or bone marrow is removed for examination. How the Test is Performed A bone biopsy involves removal of a small piece of bone for examination. A special drill needle is usually used. Once the sample is obtained, the needle is twisted out and the sample is sent for examination.
Pressure is applied to the site.
Once bleeding stops, the site is cleaned and covered with a bandage. You may be asked to fast before a bone biopsy. If it is to be performed under general anesthesia, fasting for 6 to 8 hours is recommended. You must sign a consent form. The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust.