AFB Bone Marrow Culture By Bact/Alert 3d

An AFB bone marrow culture is advised by a doctor for prolonged unexplained fever, low blood counts (pancytopenia), weight loss, or enlarged liver, spleen, or lymph nodes, when disseminated tuberculosis or MAC infection is suspected. It is especially useful in HIV or immunocompromised patients, and when a bone marrow biopsy shows granulomas.

An AFB bone marrow culture requires a bone marrow aspiration, usually from the hip bone. Inform your doctor about any blood thinners, bleeding disorders, allergies, or pregnancy. Ideally, give the sample before starting TB medicines or antibiotics. Fasting is usually not required unless sedation is planned. Arrange for someone to accompany you home.

Fasting is usually not required for an AFB bone marrow culture done under local anesthesia. However, if sedation is planned for the bone marrow procedure, you may need to fast for 4–6 hours beforehand. Always follow your doctor’s or hospital’s specific instructions before the procedure.