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Mycobacterial culture of bone marrow
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| Definition: |
This is a test to determine if tuberculosis and other similar bacteria are present in the bone marrow.
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| Alternative Names: |
Culture - mycobacterial of bone marrow
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| How the test is performed: |
| A bone marrow aspiration or biopsy is performed. A sample of bone marrow is placed in a culture media specific for tuberculosis and other similar bacteria. It is then examined for growth at routine intervals. Sometimes an acid-fast stain is done initially to help with the diagnosis. |
| How to prepare for the test: |
You must sign an informed consent form before the bone marrow biopsy. It is important to remain as still as possible during the test. There is no other special preparation.
Infants and children:
The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experiences, and level of trust. For specific information regarding how you can prepare your child, see the following topics as they correspond to your child's age:
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| How the test will feel: |
| The skin over the biopsy or aspiration site (usually the back of the hip or the sternum) will be cleansed. An anesthetic will be injected into the skin surrounding the site to numb the site. Even with the anesthetic, there may be pain or pressure as the bone marrow is removed. The discomfort in the area can last for several days and even weeks. |
| Why the test is performed: |
| The test is performed if infection of the bone marrow with tuberculosis or other similar bacteria is suspected. |
| Normal Values: |
| The bone marrow is normally sterile (no organisms are present). |
| What abnormal results mean: |
| An infection of the bone marrow with tuberculosis or other similar bacteria. This may also signify disseminated tuberculosis. |
| What the risks are: |
| There is a slight risk of bleeding or infection from the test. |
| Special considerations: |
| Not applicable. |
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Review Date: 1/8/2002
Reviewed By: Camille Kotton, M.D., Infectious Diseases Division, Massachusetts General Hospital and Brigham and Women's Hospital, Boston, MA. Review provided by VeriMed Healthcare Network.
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