Hi @marytheresacll, There’s quite a bit more information provided by a bone marrow biopsy and aspiration. While it’s true that your blood carries a lot of information about your health, the marrow is the heart of the blood manufacturing site in your body. It can show your doctor your marrow’s ability to produce healthy, useable blood products and the overall health of your marrow. It could also be helpful in staging your CLL for risk factors.

From what your doctor is telling you, you’re still in the active surveillance window of your CLL, so watching the blood numbers will tell your doctor what they need to know at this point.
Have you heard back about these most recent tests?